1085 lines
57 KiB
Python
1085 lines
57 KiB
Python
# ***************************************************************************
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# * *
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# * Copyright (c) 2015 - Przemo Firszt <przemo@firszt.eu> *
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# * Copyright (c) 2015 - Bernd Hahnebach <bernd@bimstatik.org> *
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# * *
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# * This program is free software; you can redistribute it and/or modify *
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# * it under the terms of the GNU Lesser General Public License (LGPL) *
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# * as published by the Free Software Foundation; either version 2 of *
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# * the License, or (at your option) any later version. *
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# * for detail see the LICENCE text file. *
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# * *
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# * This program is distributed in the hope that it will be useful, *
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# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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# * GNU Library General Public License for more details. *
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# * *
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# * You should have received a copy of the GNU Library General Public *
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# * License along with this program; if not, write to the Free Software *
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# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
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# * USA *
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# * *
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# ***************************************************************************
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import FreeCAD
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import os
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import sys
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import time
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__title__ = "ccxInpWriter"
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__author__ = "Przemo Firszt, Bernd Hahnebach"
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__url__ = "http://www.freecadweb.org"
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class inp_writer:
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def __init__(self, analysis_obj, mesh_obj, mat_obj,
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fixed_obj,
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force_obj, pressure_obj,
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displacement_obj,
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beamsection_obj, shellthickness_obj,
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analysis_type=None, eigenmode_parameters=None,
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dir_name=None):
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self.dir_name = dir_name
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self.analysis = analysis_obj
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self.mesh_object = mesh_obj
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self.material_objects = mat_obj
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self.fixed_objects = fixed_obj
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self.force_objects = force_obj
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self.pressure_objects = pressure_obj
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self.displacement_objects = displacement_obj
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if eigenmode_parameters:
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self.no_of_eigenfrequencies = eigenmode_parameters[0]
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self.eigenfrequeny_range_low = eigenmode_parameters[1]
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self.eigenfrequeny_range_high = eigenmode_parameters[2]
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self.analysis_type = analysis_type
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self.beamsection_objects = beamsection_obj
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self.shellthickness_objects = shellthickness_obj
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if not dir_name:
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self.dir_name = FreeCAD.ActiveDocument.TransientDir.replace('\\', '/') + '/FemAnl_' + analysis_obj.Uid[-4:]
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if not os.path.isdir(self.dir_name):
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os.mkdir(self.dir_name)
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self.file_name = self.dir_name + '/' + self.mesh_object.Name + '.inp'
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self.fc_ver = FreeCAD.Version()
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self.ccx_eall = 'Eall'
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self.ccx_elsets = []
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def write_calculix_input_file(self):
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self.mesh_object.FemMesh.writeABAQUS(self.file_name)
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# reopen file with "append" and add the analysis definition
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inpfile = open(self.file_name, 'a')
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inpfile.write('\n\n')
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self.write_element_sets_material_and_femelement_type(inpfile)
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self.write_node_sets_constraints_fixed(inpfile)
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self.write_displacement_nodes(inpfile)
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if self.analysis_type is None or self.analysis_type == "static":
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self.write_node_sets_constraints_force(inpfile)
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self.write_materials(inpfile)
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self.write_femelementsets(inpfile)
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self.write_step_begin(inpfile)
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self.write_constraints_fixed(inpfile)
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self.write_displacement(inpfile)
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if self.analysis_type is None or self.analysis_type == "static":
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self.write_constraints_force(inpfile)
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self.write_constraints_pressure(inpfile)
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elif self.analysis_type == "frequency":
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self.write_frequency(inpfile)
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self.write_outputs_types(inpfile)
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self.write_step_end(inpfile)
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self.write_footer(inpfile)
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inpfile.close()
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return self.file_name
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def write_element_sets_material_and_femelement_type(self, f):
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f.write('\n***********************************************************\n')
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f.write('** Element sets for materials and FEM element type (solid, shell, beam)\n')
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f.write('** written by {} function\n'.format(sys._getframe().f_code.co_name))
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if len(self.material_objects) == 1:
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if self.beamsection_objects and len(self.beamsection_objects) == 1: # single mat, single beam
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self.get_ccx_elsets_single_mat_single_beam()
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elif self.beamsection_objects and len(self.beamsection_objects) > 1: # single mat, multiple beams
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self.get_ccx_elsets_single_mat_multiple_beam()
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elif self.shellthickness_objects and len(self.shellthickness_objects) == 1: # single mat, single shell
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self.get_ccx_elsets_single_mat_single_shell()
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elif self.shellthickness_objects and len(self.shellthickness_objects) > 1: # single mat, multiple shells
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self.get_ccx_elsets_single_mat_multiple_shell()
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else: # single mat, solid
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self.get_ccx_elsets_single_mat_solid()
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else:
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if self.beamsection_objects and len(self.beamsection_objects) == 1: # multiple mats, single beam
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self.get_ccx_elsets_multiple_mat_single_beam()
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elif self.beamsection_objects and len(self.beamsection_objects) > 1: # multiple mats, multiple beams
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self.get_ccx_elsets_multiple_mat_multiple_beam()
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elif self.shellthickness_objects and len(self.shellthickness_objects) == 1: # multiple mats, single shell
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self.get_ccx_elsets_multiple_mat_single_shell()
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elif self.shellthickness_objects and len(self.shellthickness_objects) > 1: # multiple mats, multiple shells
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self.get_ccx_elsets_multiple_mat_multiple_shell()
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else: # multiple mats, solid
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self.get_ccx_elsets_multiple_mat_solid()
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for ccx_elset in self.ccx_elsets:
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f.write('*ELSET,ELSET=' + ccx_elset['ccx_elset_name'] + '\n')
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if ccx_elset['ccx_elset']:
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if ccx_elset['ccx_elset'] == self.ccx_eall:
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f.write(self.ccx_eall + '\n')
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else:
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for elid in ccx_elset['ccx_elset']:
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f.write(str(elid) + ',\n')
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else:
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f.write('**No elements found for these objects\n')
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def write_node_sets_constraints_fixed(self, f):
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f.write('\n***********************************************************\n')
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f.write('** Node set for fixed constraint\n')
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f.write('** written by {} function\n'.format(sys._getframe().f_code.co_name))
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for fobj in self.fixed_objects:
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fix_obj = fobj['Object']
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f.write('*NSET,NSET=' + fix_obj.Name + '\n')
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for o, elem in fix_obj.References:
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fo = o.Shape.getElement(elem)
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n = []
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if fo.ShapeType == 'Face':
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n = self.mesh_object.FemMesh.getNodesByFace(fo)
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elif fo.ShapeType == 'Edge':
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n = self.mesh_object.FemMesh.getNodesByEdge(fo)
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elif fo.ShapeType == 'Vertex':
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n = self.mesh_object.FemMesh.getNodesByVertex(fo)
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for i in n:
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f.write(str(i) + ',\n')
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def write_displacement_nodes(self,f):
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f.write('\n***********************************************************\n')
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f.write('** Node sets for prescribed displacement constraint\n')
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f.write('** written by {} function\n'.format(sys._getframe().f_code.co_name))
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for fobj in self.displacement_objects:
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disp_obj = fobj['Object']
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f.write('*NSET,NSET='+disp_obj.Name + '\n')
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for o, elem in disp_obj.References:
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fo = o.Shape.getElement(elem)
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n = []
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if fo.ShapeType == 'Face':
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n = self.mesh_object.FemMesh.getNodesByFace(fo)
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elif fo.ShapeType == 'Edge':
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n = self.mesh_object.FemMesh.getNodesByEdge(fo)
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elif fo.ShapeType == 'Vertex':
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n = self.mesh_object.FemMesh.getNodesByVertex(fo)
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for i in n:
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f.write(str(i) + ',\n')
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def write_node_sets_constraints_force(self, f):
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f.write('\n***********************************************************\n')
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f.write('** Node sets for loads\n')
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f.write('** written by {} function\n'.format(sys._getframe().f_code.co_name))
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for fobj in self.force_objects:
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frc_obj = fobj['Object']
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# in GUI defined frc_obj all ref_shape have the same shape type
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# TODO in FemTools: check if all RefShapes really have the same type an write type to dictionary
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fobj['RefShapeType'] = ''
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if frc_obj.References:
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first_ref_obj = frc_obj.References[0]
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first_ref_shape = first_ref_obj[0].Shape.getElement(first_ref_obj[1])
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fobj['RefShapeType'] = first_ref_shape.ShapeType
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else:
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# frc_obj.References could be empty ! # TODO in FemTools: check
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FreeCAD.Console.PrintError('At least one Force Object has empty References!\n')
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if fobj['RefShapeType'] == 'Vertex':
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pass # point load on vertices --> the FemElementTable is not needed for node load calculation
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elif fobj['RefShapeType'] == 'Face' and is_solid_mesh(self.mesh_object.FemMesh) and not has_no_face_data(self.mesh_object.FemMesh):
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pass # solid_mesh with face data --> the FemElementTable is not needed for node load calculation
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else:
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if not hasattr(self, 'fem_element_table'):
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self.fem_element_table = getFemElementTable(self.mesh_object.FemMesh)
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for fobj in self.force_objects:
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if fobj['RefShapeType'] == 'Vertex':
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frc_obj = fobj['Object']
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f.write('*NSET,NSET=' + frc_obj.Name + '\n')
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NbrForceNodes = 0
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for o, elem in frc_obj.References:
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fo = o.Shape.getElement(elem)
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n = []
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n = self.mesh_object.FemMesh.getNodesByVertex(fo)
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for i in n:
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f.write(str(i) + ',\n')
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NbrForceNodes = NbrForceNodes + 1 # NodeSum of mesh-nodes of ALL reference shapes from force_object
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# calculate node load
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if NbrForceNodes != 0:
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fobj['NodeLoad'] = (frc_obj.Force) / NbrForceNodes
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f.write('** concentrated load [N] distributed on all mesh nodes of the given vertieces\n')
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f.write('** ' + str(frc_obj.Force) + ' N / ' + str(NbrForceNodes) + ' Nodes = ' + str(fobj['NodeLoad']) + ' N on each node\n')
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else:
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f.write('** no point load on vertices --> no set for node loads\n')
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def write_materials(self, f):
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f.write('\n***********************************************************\n')
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f.write('** Materials\n')
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f.write('** written by {} function\n'.format(sys._getframe().f_code.co_name))
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f.write('** Young\'s modulus unit is MPa = N/mm2\n')
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for m in self.material_objects:
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mat_obj = m['Object']
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# get material properties
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YM = FreeCAD.Units.Quantity(mat_obj.Material['YoungsModulus'])
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YM_in_MPa = YM.getValueAs('MPa')
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PR = float(mat_obj.Material['PoissonRatio'])
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mat_info_name = mat_obj.Material['Name']
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mat_name = mat_obj.Name
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# write material properties
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f.write('**FreeCAD material name: ' + mat_info_name + '\n')
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f.write('*MATERIAL, NAME=' + mat_name + '\n')
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f.write('*ELASTIC \n')
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f.write('{}, '.format(YM_in_MPa))
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f.write('{0:.3f}\n'.format(PR))
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density = FreeCAD.Units.Quantity(mat_obj.Material['Density'])
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density_in_tone_per_mm3 = float(density.getValueAs('t/mm^3'))
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f.write('*DENSITY \n')
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f.write('{0:.3e}, \n'.format(density_in_tone_per_mm3))
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def write_femelementsets(self, f):
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f.write('\n***********************************************************\n')
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f.write('** Sections\n')
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f.write('** written by {} function\n'.format(sys._getframe().f_code.co_name))
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for ccx_elset in self.ccx_elsets:
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if ccx_elset['ccx_elset']:
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if 'beamsection_obj'in ccx_elset: # beam mesh
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beamsec_obj = ccx_elset['beamsection_obj']
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elsetdef = 'ELSET=' + ccx_elset['ccx_elset_name'] + ', '
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material = 'MATERIAL=' + ccx_elset['mat_obj_name']
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setion_def = '*BEAM SECTION, ' + elsetdef + material + ', SECTION=RECT\n'
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setion_geo = str(beamsec_obj.Height.getValueAs('mm')) + ', ' + str(beamsec_obj.Width.getValueAs('mm')) + '\n'
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f.write(setion_def)
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f.write(setion_geo)
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elif 'shellthickness_obj'in ccx_elset: # shell mesh
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shellth_obj = ccx_elset['shellthickness_obj']
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elsetdef = 'ELSET=' + ccx_elset['ccx_elset_name'] + ', '
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material = 'MATERIAL=' + ccx_elset['mat_obj_name']
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setion_def = '*SHELL SECTION, ' + elsetdef + material + '\n'
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setion_geo = str(shellth_obj.Thickness.getValueAs('mm')) + '\n'
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f.write(setion_def)
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f.write(setion_geo)
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else: # solid mesh
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elsetdef = 'ELSET=' + ccx_elset['ccx_elset_name'] + ', '
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material = 'MATERIAL=' + ccx_elset['mat_obj_name']
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setion_def = '*SOLID SECTION, ' + elsetdef + material + '\n'
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f.write(setion_def)
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def write_step_begin(self, f):
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f.write('\n***********************************************************\n')
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f.write('** One step is needed to calculate the mechanical analysis of FreeCAD\n')
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f.write('** loads are applied quasi-static, means without involving the time dimension\n')
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f.write('** written by {} function\n'.format(sys._getframe().f_code.co_name))
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f.write('*STEP\n')
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f.write('*STATIC\n')
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def write_constraints_fixed(self, f):
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f.write('\n***********************************************************\n')
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f.write('** Constaints\n')
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f.write('** written by {} function\n'.format(sys._getframe().f_code.co_name))
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for fixed_object in self.fixed_objects:
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fix_obj_name = fixed_object['Object'].Name
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f.write('*BOUNDARY\n')
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f.write(fix_obj_name + ',1\n')
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f.write(fix_obj_name + ',2\n')
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f.write(fix_obj_name + ',3\n')
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if self.beamsection_objects or self.shellthickness_objects:
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f.write(fix_obj_name + ',4\n')
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f.write(fix_obj_name + ',5\n')
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f.write(fix_obj_name + ',6\n')
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f.write('\n')
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def write_displacement(self,f):
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f.write('\n***********************************************************\n')
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f.write('** Displacement constraint applied\n')
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f.write('** written by {} function\n'.format(sys._getframe().f_code.co_name))
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for disp_obj in self.displacement_objects:
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disp_obj_name = disp_obj['Object'].Name
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f.write('*BOUNDARY\n')
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if disp_obj['Object'].xFix == True:
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f.write(disp_obj_name + ',1\n')
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elif disp_obj['Object'].xFree == False:
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f.write(disp_obj_name + ',1,1,'+str(disp_obj['Object'].xDisplacement)+'\n')
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if disp_obj['Object'].yFix == True:
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f.write(disp_obj_name + ',2\n')
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elif disp_obj['Object'].yFree == False:
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f.write(disp_obj_name + ',2,2,'+str(disp_obj['Object'].yDisplacement)+'\n')
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if disp_obj['Object'].zFix == True:
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f.write(disp_obj_name + ',3\n')
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elif disp_obj['Object'].zFree == False:
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f.write(disp_obj_name + ',3,3,'+str(disp_obj['Object'].zDisplacement)+'\n')
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if self.beamsection_objects or self.shellthickness_objects:
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if disp_obj['Object'].rotxFix == True:
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f.write(disp_obj_name + ',4\n')
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elif disp_obj['Object'].rotxFree == False:
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f.write(disp_obj_name + ',4,4,'+str(disp_obj['Object'].xRotation)+'\n')
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if disp_obj['Object'].rotyFix == True:
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f.write(disp_obj_name + ',5\n')
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elif disp_obj['Object'].rotyFree == False:
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f.write(disp_obj_name + ',5,5,'+str(disp_obj['Object'].yRotation)+'\n')
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if disp_obj['Object'].rotzFix == True:
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f.write(disp_obj_name + ',6\n')
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elif disp_obj['Object'].rotzFree == False:
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f.write(disp_obj_name + ',6,6,'+str(disp_obj['Object'].zRotation)+'\n')
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f.write('\n')
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def write_constraints_force(self, f):
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f.write('\n***********************************************************\n')
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f.write('** Node loads\n')
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f.write('** written by {} function\n'.format(sys._getframe().f_code.co_name))
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f.write('*CLOAD\n')
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for fobj in self.force_objects:
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frc_obj = fobj['Object']
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f.write('** ' + frc_obj.Name + '\n')
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direction_vec = frc_obj.DirectionVector
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if frc_obj.Force == 0:
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print(' Warning --> Force = 0')
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if fobj['RefShapeType'] == 'Vertex': # point load on vertieces
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node_load = fobj['NodeLoad']
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frc_obj_name = frc_obj.Name
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f.write('** force: ' + str(node_load) + ' N, direction: ' + str(direction_vec) + '\n')
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v1 = "{:.13E}".format(direction_vec.x * node_load)
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v2 = "{:.13E}".format(direction_vec.y * node_load)
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v3 = "{:.13E}".format(direction_vec.z * node_load)
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f.write(frc_obj_name + ',1,' + v1 + '\n')
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f.write(frc_obj_name + ',2,' + v2 + '\n')
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f.write(frc_obj_name + ',3,' + v3 + '\n\n')
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elif fobj['RefShapeType'] == 'Edge': # line load on edges
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sum_ref_edge_length = 0
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sum_ref_edge_node_length = 0 # for debugging
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sum_node_load = 0 # for debugging
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for o, elem in frc_obj.References:
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elem_o = o.Shape.getElement(elem)
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sum_ref_edge_length += elem_o.Length
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if sum_ref_edge_length != 0:
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force_per_sum_ref_edge_length = frc_obj.Force / sum_ref_edge_length
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for o, elem in frc_obj.References:
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elem_o = o.Shape.getElement(elem)
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ref_edge = elem_o
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# edge_table = { meshedgeID : ( nodeID, ... , nodeID ) }
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edge_table = self.get_refedge_node_table(ref_edge)
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# node_length_table = [ (nodeID, length), ... , (nodeID, length) ] some nodes will have more than one entry
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node_length_table = self.get_refedge_node_lengths(edge_table)
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# node_sum_length_table = { nodeID : Length, ... , nodeID : Length } LengthSum for each node, one entry for each node
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node_sum_length_table = self.get_ref_shape_node_sum_geom_table(node_length_table)
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# node_load_table = { nodeID : NodeLoad, ... , nodeID : NodeLoad } NodeLoad for each node, one entry for each node
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node_load_table = {}
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sum_node_lengths = 0 # for debugging
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for node in node_sum_length_table:
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sum_node_lengths += node_sum_length_table[node] # for debugging
|
|
node_load_table[node] = node_sum_length_table[node] * force_per_sum_ref_edge_length
|
|
ratio_refedge_lengths = sum_node_lengths / elem_o.Length
|
|
if ratio_refedge_lengths < 0.99 or ratio_refedge_lengths > 1.01:
|
|
FreeCAD.Console.PrintError('Error on: ' + frc_obj.Name + ' --> ' + o.Name + '.' + elem + '\n')
|
|
print(' sum_node_lengths:', sum_node_lengths)
|
|
print(' refedge_length: ', elem_o.Length)
|
|
bad_refedge = elem_o
|
|
sum_ref_edge_node_length += sum_node_lengths
|
|
|
|
f.write('** node loads on element ' + fobj['RefShapeType'] + ': ' + o.Name + ':' + elem + '\n')
|
|
for n in sorted(node_load_table):
|
|
node_load = node_load_table[n]
|
|
sum_node_load += node_load # for debugging
|
|
if (direction_vec.x != 0.0):
|
|
v1 = "{:.13E}".format(direction_vec.x * node_load)
|
|
f.write(str(n) + ',1,' + v1 + '\n')
|
|
if (direction_vec.y != 0.0):
|
|
v2 = "{:.13E}".format(direction_vec.y * node_load)
|
|
f.write(str(n) + ',2,' + v2 + '\n')
|
|
if (direction_vec.z != 0.0):
|
|
v3 = "{:.13E}".format(direction_vec.z * node_load)
|
|
f.write(str(n) + ',3,' + v3 + '\n')
|
|
f.write('\n')
|
|
f.write('\n')
|
|
ratio = sum_node_load / frc_obj.Force
|
|
if ratio < 0.99 or ratio > 1.01:
|
|
print('Deviation sum_node_load to frc_obj.Force is more than 1% : ', ratio)
|
|
print(' sum_ref_edge_node_length: ', sum_ref_edge_node_length)
|
|
print(' sum_ref_edge_length: ', sum_ref_edge_length)
|
|
print(' sum_node_load: ', sum_node_load)
|
|
print(' frc_obj.Force: ', frc_obj.Force)
|
|
print(' the reason could be simply a circle length --> see method get_ref_edge_node_lengths')
|
|
print(' the reason could also be an problem in retrieving the ref_edge_node_length')
|
|
|
|
# try debugging of the last bad refedge
|
|
print('DEBUGGING')
|
|
print(bad_refedge)
|
|
|
|
print('bad_refedge_nodes')
|
|
bad_refedge_nodes = self.mesh_object.FemMesh.getNodesByEdge(bad_refedge)
|
|
print(len(bad_refedge_nodes))
|
|
print(bad_refedge_nodes)
|
|
# import FreeCADGui
|
|
# FreeCADGui.ActiveDocument.Compound_Mesh.HighlightedNodes = bad_refedge_nodes
|
|
|
|
print('bad_edge_table')
|
|
# bad_edge_table = { meshedgeID : ( nodeID, ... , nodeID ) }
|
|
bad_edge_table = self.get_refedge_node_table(bad_refedge)
|
|
print(len(bad_edge_table))
|
|
bad_edge_table_nodes = []
|
|
for elem in bad_edge_table:
|
|
print(elem, ' --> ', bad_edge_table[elem])
|
|
for node in bad_edge_table[elem]:
|
|
if node not in bad_edge_table_nodes:
|
|
bad_edge_table_nodes.append(node)
|
|
print('sorted(bad_edge_table_nodes)')
|
|
print(sorted(bad_edge_table_nodes)) # should be == bad_refedge_nodes
|
|
# import FreeCADGui
|
|
# FreeCADGui.ActiveDocument.Compound_Mesh.HighlightedNodes = bad_edge_table_nodes
|
|
# bad_node_length_table = [ (nodeID, length), ... , (nodeID, length) ] some nodes will have more than one entry
|
|
|
|
print('good_edge_table')
|
|
good_edge_table = delete_duplicate_mesh_elements(bad_edge_table)
|
|
for elem in good_edge_table:
|
|
print(elem, ' --> ', bad_edge_table[elem])
|
|
|
|
print('bad_node_length_table')
|
|
bad_node_length_table = self.get_refedge_node_lengths(bad_edge_table)
|
|
for n, l in bad_node_length_table:
|
|
print(n, ' --> ', l)
|
|
|
|
elif fobj['RefShapeType'] == 'Face': # area load on faces
|
|
sum_ref_face_area = 0
|
|
sum_ref_face_node_area = 0 # for debugging
|
|
sum_node_load = 0 # for debugging
|
|
for o, elem in frc_obj.References:
|
|
elem_o = o.Shape.getElement(elem)
|
|
sum_ref_face_area += elem_o.Area
|
|
if sum_ref_face_area != 0:
|
|
force_per_sum_ref_face_area = frc_obj.Force / sum_ref_face_area
|
|
for o, elem in frc_obj.References:
|
|
elem_o = o.Shape.getElement(elem)
|
|
ref_face = elem_o
|
|
|
|
# face_table = { meshfaceID : ( nodeID, ... , nodeID ) }
|
|
face_table = self.get_ref_face_node_table(ref_face)
|
|
|
|
# node_area_table = [ (nodeID, Area), ... , (nodeID, Area) ] some nodes will have more than one entry
|
|
node_area_table = self.get_ref_face_node_areas(face_table)
|
|
|
|
# node_sum_area_table = { nodeID : Area, ... , nodeID : Area } AreaSum for each node, one entry for each node
|
|
node_sum_area_table = self.get_ref_shape_node_sum_geom_table(node_area_table)
|
|
|
|
# node_load_table = { nodeID : NodeLoad, ... , nodeID : NodeLoad } NodeLoad for each node, one entry for each node
|
|
node_load_table = {}
|
|
sum_node_areas = 0 # for debugging
|
|
for node in node_sum_area_table:
|
|
sum_node_areas += node_sum_area_table[node] # for debugging
|
|
node_load_table[node] = node_sum_area_table[node] * force_per_sum_ref_face_area
|
|
ratio_refface_areas = sum_node_areas / elem_o.Area
|
|
if ratio_refface_areas < 0.99 or ratio_refface_areas > 1.01:
|
|
FreeCAD.Console.PrintError('Error on: ' + frc_obj.Name + ' --> ' + o.Name + '.' + elem + '\n')
|
|
print(' sum_node_lengths:', sum_node_areas)
|
|
print(' refedge_length: ', elem_o.Area)
|
|
sum_ref_face_node_area += sum_node_areas
|
|
|
|
f.write('** node loads on element ' + fobj['RefShapeType'] + ': ' + o.Name + ':' + elem + '\n')
|
|
for n in sorted(node_load_table):
|
|
node_load = node_load_table[n]
|
|
sum_node_load += node_load # for debugging
|
|
if (direction_vec.x != 0.0):
|
|
v1 = "{:.13E}".format(direction_vec.x * node_load)
|
|
f.write(str(n) + ',1,' + v1 + '\n')
|
|
if (direction_vec.y != 0.0):
|
|
v2 = "{:.13E}".format(direction_vec.y * node_load)
|
|
f.write(str(n) + ',2,' + v2 + '\n')
|
|
if (direction_vec.z != 0.0):
|
|
v3 = "{:.13E}".format(direction_vec.z * node_load)
|
|
f.write(str(n) + ',3,' + v3 + '\n')
|
|
f.write('\n')
|
|
f.write('\n')
|
|
ratio = sum_node_load / frc_obj.Force
|
|
if ratio < 0.99 or ratio > 1.01:
|
|
print('Deviation sum_node_load to frc_obj.Force is more than 1% : ', ratio)
|
|
print(' sum_ref_face_node_area: ', sum_ref_face_node_area)
|
|
print(' sum_ref_face_area: ', sum_ref_face_area)
|
|
print(' sum_node_load: ', sum_node_load)
|
|
print(' frc_obj.Force: ', frc_obj.Force)
|
|
print(' the reason could be simply a circle area --> see method get_ref_face_node_areas')
|
|
print(' the reason could also be an problem in retrieving the ref_face_node_area')
|
|
|
|
def write_constraints_pressure(self, f):
|
|
f.write('\n***********************************************************\n')
|
|
f.write('** Element + CalculiX face + load in [MPa]\n')
|
|
f.write('** written by {} function\n'.format(sys._getframe().f_code.co_name))
|
|
for fobj in self.pressure_objects:
|
|
prs_obj = fobj['Object']
|
|
f.write('*DLOAD\n')
|
|
for o, e in prs_obj.References:
|
|
rev = -1 if prs_obj.Reversed else 1
|
|
elem = o.Shape.getElement(e)
|
|
if elem.ShapeType == 'Face':
|
|
v = self.mesh_object.FemMesh.getccxVolumesByFace(elem)
|
|
f.write("** Load on face {}\n".format(e))
|
|
for i in v:
|
|
f.write("{},P{},{}\n".format(i[0], i[1], rev * prs_obj.Pressure))
|
|
|
|
def write_frequency(self, f):
|
|
f.write('\n***********************************************************\n')
|
|
f.write('** Frequency analysis\n')
|
|
f.write('** written by {} function\n'.format(sys._getframe().f_code.co_name))
|
|
f.write('*FREQUENCY\n')
|
|
f.write('{},{},{}\n'.format(self.no_of_eigenfrequencies, self.eigenfrequeny_range_low, self.eigenfrequeny_range_high))
|
|
|
|
def write_outputs_types(self, f):
|
|
f.write('\n***********************************************************\n')
|
|
f.write('** Outputs --> frd file\n')
|
|
f.write('** written by {} function\n'.format(sys._getframe().f_code.co_name))
|
|
if self.beamsection_objects or self.shellthickness_objects:
|
|
f.write('*NODE FILE, OUTPUT=2d\n')
|
|
else:
|
|
f.write('*NODE FILE\n')
|
|
f.write('U\n')
|
|
f.write('*EL FILE\n')
|
|
f.write('S, E\n')
|
|
f.write('** outputs --> dat file\n')
|
|
f.write('*NODE PRINT , NSET=Nall \n')
|
|
f.write('U \n')
|
|
f.write('*EL PRINT , ELSET=Eall \n')
|
|
f.write('S \n')
|
|
|
|
def write_step_end(self, f):
|
|
f.write('\n***********************************************************\n')
|
|
f.write('** written by {} function\n'.format(sys._getframe().f_code.co_name))
|
|
f.write('*END STEP \n')
|
|
|
|
def write_footer(self, f):
|
|
f.write('\n***********************************************************\n')
|
|
f.write('** CalculiX Input file\n')
|
|
f.write('** written by {} function\n'.format(sys._getframe().f_code.co_name))
|
|
f.write('** written by --> FreeCAD ' + self.fc_ver[0] + '.' + self.fc_ver[1] + '.' + self.fc_ver[2] + '\n')
|
|
f.write('** written on --> ' + time.ctime() + '\n')
|
|
f.write('** file name --> ' + os.path.basename(FreeCAD.ActiveDocument.FileName) + '\n')
|
|
f.write('** analysis name --> ' + self.analysis.Name + '\n')
|
|
f.write('**\n')
|
|
f.write('**\n')
|
|
f.write('**\n')
|
|
f.write('** Units\n')
|
|
f.write('**\n')
|
|
f.write('** Geometry (mesh data) --> mm\n')
|
|
f.write("** Materials (Young's modulus) --> N/mm2 = MPa\n")
|
|
f.write('** Loads (nodal loads) --> N\n')
|
|
f.write('**\n')
|
|
|
|
# self.ccx_elsets = [ {
|
|
# 'beamsection_obj' : 'beamsection_obj' if exists
|
|
# 'shellthickness_obj' : shellthickness_obj' if exists
|
|
# 'ccx_elset' : [e1, e2, e3, ... , en] or string self.ccx_eall
|
|
# 'ccx_elset_name' : 'ccx_identifier_elset'
|
|
# 'mat_obj_name' : 'mat_obj.Name'
|
|
# 'ccx_mat_name' : 'mat_obj.Material['Name']' !!! not unique !!!
|
|
# },
|
|
# {}, ... , {} ]
|
|
def get_ccx_elsets_single_mat_single_beam(self):
|
|
mat_obj = self.material_objects[0]['Object']
|
|
beamsec_obj = self.beamsection_objects[0]['Object']
|
|
ccx_elset = {}
|
|
ccx_elset['beamsection_obj'] = beamsec_obj
|
|
ccx_elset['ccx_elset'] = self.ccx_eall
|
|
ccx_elset['ccx_elset_name'] = get_ccx_elset_beam_name(mat_obj.Name, beamsec_obj.Name)
|
|
ccx_elset['mat_obj_name'] = mat_obj.Name
|
|
ccx_elset['ccx_mat_name'] = mat_obj.Material['Name']
|
|
self.ccx_elsets.append(ccx_elset)
|
|
|
|
def get_ccx_elsets_single_mat_single_shell(self):
|
|
mat_obj = self.material_objects[0]['Object']
|
|
shellth_obj = self.shellthickness_objects[0]['Object']
|
|
ccx_elset = {}
|
|
ccx_elset['shellthickness_obj'] = shellth_obj
|
|
ccx_elset['ccx_elset'] = self.ccx_eall
|
|
ccx_elset['ccx_elset_name'] = get_ccx_elset_shell_name(mat_obj.Name, shellth_obj.Name)
|
|
ccx_elset['mat_obj_name'] = mat_obj.Name
|
|
ccx_elset['ccx_mat_name'] = mat_obj.Material['Name']
|
|
self.ccx_elsets.append(ccx_elset)
|
|
|
|
def get_ccx_elsets_single_mat_solid(self):
|
|
mat_obj = self.material_objects[0]['Object']
|
|
ccx_elset = {}
|
|
ccx_elset['ccx_elset'] = self.ccx_eall
|
|
ccx_elset['ccx_elset_name'] = get_ccx_elset_solid_name(mat_obj.Name)
|
|
ccx_elset['mat_obj_name'] = mat_obj.Name
|
|
ccx_elset['ccx_mat_name'] = mat_obj.Material['Name']
|
|
self.ccx_elsets.append(ccx_elset)
|
|
|
|
def get_ccx_elsets_single_mat_multiple_beam(self):
|
|
mat_obj = self.material_objects[0]['Object']
|
|
self.get_femelement_sets(self.beamsection_objects)
|
|
for beamsec_data in self.beamsection_objects:
|
|
beamsec_obj = beamsec_data['Object']
|
|
ccx_elset = {}
|
|
ccx_elset['beamsection_obj'] = beamsec_obj
|
|
ccx_elset['ccx_elset'] = beamsec_data['FEMElements']
|
|
ccx_elset['ccx_elset_name'] = get_ccx_elset_beam_name(mat_obj.Name, beamsec_obj.Name, None, beamsec_data['ShortName'])
|
|
ccx_elset['mat_obj_name'] = mat_obj.Name
|
|
ccx_elset['ccx_mat_name'] = mat_obj.Material['Name']
|
|
self.ccx_elsets.append(ccx_elset)
|
|
|
|
def get_ccx_elsets_single_mat_multiple_shell(self):
|
|
mat_obj = self.material_objects[0]['Object']
|
|
self.get_femelement_sets(self.shellthickness_objects)
|
|
for shellth_data in self.shellthickness_objects:
|
|
shellth_obj = shellth_data['Object']
|
|
ccx_elset = {}
|
|
ccx_elset['shellthickness_obj'] = shellth_obj
|
|
ccx_elset['ccx_elset'] = shellth_data['FEMElements']
|
|
ccx_elset['ccx_elset_name'] = get_ccx_elset_shell_name(mat_obj.Name, shellth_obj.Name, None, shellth_data['ShortName'])
|
|
ccx_elset['mat_obj_name'] = mat_obj.Name
|
|
ccx_elset['ccx_mat_name'] = mat_obj.Material['Name']
|
|
self.ccx_elsets.append(ccx_elset)
|
|
|
|
def get_ccx_elsets_multiple_mat_single_beam(self):
|
|
beamsec_obj = self.beamsection_objects[0]['Object']
|
|
self.get_femelement_sets(self.material_objects)
|
|
for mat_data in self.material_objects:
|
|
mat_obj = mat_data['Object']
|
|
ccx_elset = {}
|
|
ccx_elset['beamsection_obj'] = beamsec_obj
|
|
ccx_elset['ccx_elset'] = mat_data['FEMElements']
|
|
ccx_elset['ccx_elset_name'] = get_ccx_elset_beam_name(mat_obj.Name, beamsec_obj.Name, mat_data['ShortName'])
|
|
ccx_elset['mat_obj_name'] = mat_obj.Name
|
|
ccx_elset['ccx_mat_name'] = mat_obj.Material['Name']
|
|
self.ccx_elsets.append(ccx_elset)
|
|
|
|
def get_ccx_elsets_multiple_mat_single_shell(self):
|
|
shellth_obj = self.shellthickness_objects[0]['Object']
|
|
self.get_femelement_sets(self.material_objects)
|
|
for mat_data in self.material_objects:
|
|
mat_obj = mat_data['Object']
|
|
ccx_elset = {}
|
|
ccx_elset['shellthickness_obj'] = shellth_obj
|
|
ccx_elset['ccx_elset'] = mat_data['FEMElements']
|
|
ccx_elset['ccx_elset_name'] = get_ccx_elset_shell_name(mat_obj.Name, shellth_obj.Name, mat_data['ShortName'])
|
|
ccx_elset['mat_obj_name'] = mat_obj.Name
|
|
ccx_elset['ccx_mat_name'] = mat_obj.Material['Name']
|
|
self.ccx_elsets.append(ccx_elset)
|
|
|
|
def get_ccx_elsets_multiple_mat_solid(self):
|
|
self.get_femelement_sets(self.material_objects)
|
|
for mat_data in self.material_objects:
|
|
mat_obj = mat_data['Object']
|
|
ccx_elset = {}
|
|
ccx_elset['ccx_elset'] = mat_data['FEMElements']
|
|
ccx_elset['ccx_elset_name'] = get_ccx_elset_solid_name(mat_obj.Name, None, mat_data['ShortName'])
|
|
ccx_elset['mat_obj_name'] = mat_obj.Name
|
|
ccx_elset['ccx_mat_name'] = mat_obj.Material['Name']
|
|
self.ccx_elsets.append(ccx_elset)
|
|
|
|
def get_ccx_elsets_multiple_mat_multiple_beam(self):
|
|
self.get_femelement_sets(self.beamsection_objects)
|
|
self.get_femelement_sets(self.material_objects)
|
|
for beamsec_data in self.beamsection_objects:
|
|
beamsec_obj = beamsec_data['Object']
|
|
for mat_data in self.material_objects:
|
|
mat_obj = mat_data['Object']
|
|
ccx_elset = {}
|
|
ccx_elset['beamsection_obj'] = beamsec_obj
|
|
elemids = []
|
|
for elemid in beamsec_data['FEMElements']:
|
|
if elemid in mat_data['FEMElements']:
|
|
elemids.append(elemid)
|
|
ccx_elset['ccx_elset'] = elemids
|
|
ccx_elset['ccx_elset_name'] = get_ccx_elset_beam_name(mat_obj.Name, beamsec_obj.Name, mat_data['ShortName'], beamsec_data['ShortName'])
|
|
ccx_elset['mat_obj_name'] = mat_obj.Name
|
|
ccx_elset['ccx_mat_name'] = mat_obj.Material['Name']
|
|
self.ccx_elsets.append(ccx_elset)
|
|
|
|
def get_ccx_elsets_multiple_mat_multiple_shell(self):
|
|
self.get_femelement_sets(self.shellthickness_objects)
|
|
self.get_femelement_sets(self.material_objects)
|
|
for shellth_data in self.shellthickness_objects:
|
|
shellth_obj = shellth_data['Object']
|
|
for mat_data in self.material_objects:
|
|
mat_obj = mat_data['Object']
|
|
ccx_elset = {}
|
|
ccx_elset['shellthickness_obj'] = shellth_obj
|
|
elemids = []
|
|
for elemid in shellth_data['FEMElements']:
|
|
if elemid in mat_data['FEMElements']:
|
|
elemids.append(elemid)
|
|
ccx_elset['ccx_elset'] = elemids
|
|
ccx_elset['ccx_elset_name'] = get_ccx_elset_shell_name(mat_obj.Name, shellth_obj.Name, mat_data['ShortName'], shellth_data['ShortName'])
|
|
ccx_elset['mat_obj_name'] = mat_obj.Name
|
|
ccx_elset['ccx_mat_name'] = mat_obj.Material['Name']
|
|
self.ccx_elsets.append(ccx_elset)
|
|
|
|
def get_femelement_sets(self, fem_objects):
|
|
# get femelements for reference shapes of each obj.References
|
|
if not hasattr(self, 'fem_element_table'):
|
|
self.fem_element_table = getFemElementTable(self.mesh_object.FemMesh)
|
|
count_femelements = 0
|
|
referenced_femelements = []
|
|
has_remaining_femelements = None
|
|
for fem_object_i, fem_object in enumerate(fem_objects):
|
|
obj = fem_object['Object']
|
|
fem_object['ShortName'] = get_ccx_elset_short_name(obj, fem_object_i) # unique short ccx_identifier
|
|
if obj.References:
|
|
ref_shape_femelements = []
|
|
for ref in obj.References:
|
|
femnodes = []
|
|
femelements = []
|
|
if ref[1]:
|
|
r = ref[0].Shape.getElement(ref[1])
|
|
else:
|
|
r = ref[0].Shape
|
|
# print(' ReferenceShape : ', r.ShapeType, ', ', ref[0].Name, ', ', ref[0].Label, ' --> ', ref[1])
|
|
if r.ShapeType == 'Edge':
|
|
femnodes = self.mesh_object.FemMesh.getNodesByEdge(r)
|
|
elif r.ShapeType == 'Face':
|
|
femnodes = self.mesh_object.FemMesh.getNodesByFace(r)
|
|
elif r.ShapeType == 'Solid':
|
|
femnodes = self.mesh_object.FemMesh.getNodesBySolid(r)
|
|
else:
|
|
print(' No Edge, Face or Solid as reference shapes!')
|
|
femelements = getFemElementsByNodes(self.fem_element_table, femnodes)
|
|
ref_shape_femelements += femelements
|
|
referenced_femelements += femelements
|
|
count_femelements += len(femelements)
|
|
fem_object['FEMElements'] = ref_shape_femelements
|
|
else:
|
|
has_remaining_femelements = obj.Name
|
|
# get remaining femelements for the fem_objects
|
|
if has_remaining_femelements:
|
|
remaining_femelements = []
|
|
for elemid in self.fem_element_table:
|
|
if elemid not in referenced_femelements:
|
|
remaining_femelements.append(elemid)
|
|
count_femelements += len(remaining_femelements)
|
|
for fem_object in fem_objects:
|
|
obj = fem_object['Object']
|
|
if obj.Name == has_remaining_femelements:
|
|
fem_object['FEMElements'] = sorted(remaining_femelements)
|
|
# check if all worked out well
|
|
if not femelements_count_ok(self.fem_element_table, count_femelements):
|
|
FreeCAD.Console.PrintError('Error in get_femelement_sets -- > femelements_count_ok failed!\n')
|
|
|
|
def get_refedge_node_table(self, refedge):
|
|
edge_table = {} # { meshedgeID : ( nodeID, ... , nodeID ) }
|
|
refedge_nodes = self.mesh_object.FemMesh.getNodesByEdge(refedge)
|
|
if is_solid_mesh(self.mesh_object.FemMesh):
|
|
refedge_fem_volumeelements = []
|
|
# if at least two nodes of a femvolumeelement are in refedge_nodes the volume is added to refedge_fem_volumeelements
|
|
for elem in self.fem_element_table:
|
|
nodecount = 0
|
|
for node in self.fem_element_table[elem]:
|
|
if node in refedge_nodes:
|
|
nodecount += 1
|
|
if nodecount > 1:
|
|
refedge_fem_volumeelements.append(elem)
|
|
# for every refedge_fem_volumeelement look which of his nodes is in refedge_nodes --> add all these nodes to edge_table
|
|
for elem in refedge_fem_volumeelements:
|
|
fe_refedge_nodes = []
|
|
for node in self.fem_element_table[elem]:
|
|
if node in refedge_nodes:
|
|
fe_refedge_nodes.append(node)
|
|
edge_table[elem] = fe_refedge_nodes # { volumeID : ( edgenodeID, ... , edgenodeID )} # only the refedge nodes
|
|
# FIXME duplicate_mesh_elements: as soon as contact ans springs are supported the user should decide on which edge the load is applied
|
|
edge_table = delete_duplicate_mesh_elements(edge_table)
|
|
elif is_shell_mesh(self.mesh_object.FemMesh):
|
|
refedge_fem_faceelements = []
|
|
# if at least two nodes of a femfaceelement are in refedge_nodes the volume is added to refedge_fem_volumeelements
|
|
for elem in self.fem_element_table:
|
|
nodecount = 0
|
|
for node in self.fem_element_table[elem]:
|
|
if node in refedge_nodes:
|
|
nodecount += 1
|
|
if nodecount > 1:
|
|
refedge_fem_faceelements.append(elem)
|
|
# for every refedge_fem_faceelement look which of his nodes is in refedge_nodes --> add all these nodes to edge_table
|
|
for elem in refedge_fem_faceelements:
|
|
fe_refedge_nodes = []
|
|
for node in self.fem_element_table[elem]:
|
|
if node in refedge_nodes:
|
|
fe_refedge_nodes.append(node)
|
|
edge_table[elem] = fe_refedge_nodes # { faceID : ( edgenodeID, ... , edgenodeID )} # only the refedge nodes
|
|
# FIXME duplicate_mesh_elements: as soon as contact ans springs are supported the user should decide on which edge the load is applied
|
|
edge_table = delete_duplicate_mesh_elements(edge_table)
|
|
elif is_beam_mesh(self.mesh_object.FemMesh):
|
|
refedge_fem_edgeelements = getFemElementsByNodes(self.fem_element_table, refedge_nodes)
|
|
for elem in refedge_fem_edgeelements:
|
|
edge_table[elem] = self.fem_element_table[elem] # { edgeID : ( nodeID, ... , nodeID )} # all nodes off this femedgeelement
|
|
return edge_table
|
|
|
|
def get_ref_face_node_table(self, ref_face):
|
|
face_table = {} # { meshfaceID : ( nodeID, ... , nodeID ) }
|
|
if is_solid_mesh(self.mesh_object.FemMesh):
|
|
if has_no_face_data(self.mesh_object.FemMesh):
|
|
# there is no face data, the volumeID is used as key { volumeID : ( facenodeID, ... , facenodeID ) } only the ref_face nodes
|
|
ref_face_volume_elements = self.mesh_object.FemMesh.getccxVolumesByFace(ref_face) # list of tupels (mv, ccx_face_nr)
|
|
ref_face_nodes = self.mesh_object.FemMesh.getNodesByFace(ref_face)
|
|
for ve in ref_face_volume_elements:
|
|
veID = ve[0]
|
|
ve_ref_face_nodes = []
|
|
for nodeID in self.fem_element_table[veID]:
|
|
if nodeID in ref_face_nodes:
|
|
ve_ref_face_nodes.append(nodeID)
|
|
face_table[veID] = ve_ref_face_nodes # { volumeID : ( facenodeID, ... , facenodeID ) } only the ref_face nodes
|
|
else: # the femmesh has face_data
|
|
volume_faces = self.mesh_object.FemMesh.getVolumesByFace(ref_face) # (mv, mf)
|
|
for mv, mf in volume_faces:
|
|
face_table[mf] = self.mesh_object.FemMesh.getElementNodes(mf)
|
|
elif is_shell_mesh(self.mesh_object.FemMesh):
|
|
ref_face_nodes = self.mesh_object.FemMesh.getNodesByFace(ref_face)
|
|
ref_face_elements = getFemElementsByNodes(self.fem_element_table, ref_face_nodes)
|
|
for mf in ref_face_elements:
|
|
face_table[mf] = self.fem_element_table[mf]
|
|
return face_table
|
|
|
|
def get_refedge_node_lengths(self, edge_table):
|
|
# calulate the appropriate node_length for every node of every mesh edge (me)
|
|
# G. Lakshmi Narasaiah, Finite Element Analysis, p206ff
|
|
|
|
# [ (nodeID, length), ... , (nodeID, length) ] some nodes will have more than one entry
|
|
node_length_table = []
|
|
mesh_edge_length = 0
|
|
# print(len(edge_table))
|
|
for me in edge_table:
|
|
if len(edge_table[me]) == 2: # 2 node mesh edge
|
|
# end_node_length = mesh_edge_length / 2
|
|
# ______
|
|
# P1 P2
|
|
P1 = self.mesh_object.FemMesh.Nodes[edge_table[me][0]]
|
|
P2 = self.mesh_object.FemMesh.Nodes[edge_table[me][1]]
|
|
edge_vec = P2 - P1
|
|
mesh_edge_length = edge_vec.Length
|
|
# print(mesh_edge_length)
|
|
end_node_length = mesh_edge_length / 2.0
|
|
node_length_table.append((edge_table[me][0], end_node_length))
|
|
node_length_table.append((edge_table[me][1], end_node_length))
|
|
|
|
elif len(edge_table[me]) == 3: # 3 node mesh edge
|
|
# end_node_length = mesh_edge_length / 6
|
|
# middle_node_length = mesh_face_area * 2 / 3
|
|
# _______ _______
|
|
# P1 P3 P2
|
|
P1 = self.mesh_object.FemMesh.Nodes[edge_table[me][0]]
|
|
P2 = self.mesh_object.FemMesh.Nodes[edge_table[me][1]]
|
|
P3 = self.mesh_object.FemMesh.Nodes[edge_table[me][2]]
|
|
edge_vec1 = P3 - P1
|
|
edge_vec2 = P2 - P3
|
|
mesh_edge_length = edge_vec1.Length + edge_vec2.Length
|
|
# print(me, ' --> ', mesh_edge_length)
|
|
end_node_length = mesh_edge_length / 6.0
|
|
middle_node_length = mesh_edge_length * 2.0 / 3.0
|
|
node_length_table.append((edge_table[me][0], end_node_length))
|
|
node_length_table.append((edge_table[me][1], end_node_length))
|
|
node_length_table.append((edge_table[me][2], middle_node_length))
|
|
return node_length_table
|
|
|
|
def get_ref_face_node_areas(self, face_table):
|
|
# calulate the appropriate node_areas for every node of every mesh face (mf)
|
|
# G. Lakshmi Narasaiah, Finite Element Analysis, p206ff
|
|
# FIXME only gives exact results in case of a real triangle. If for S6 or C3D10 elements
|
|
# the midnodes are not on the line between the end nodes the area will not be a triangle
|
|
# see http://forum.freecadweb.org/viewtopic.php?f=18&t=10939&start=40#p91355 and ff
|
|
|
|
# [ (nodeID,Area), ... , (nodeID,Area) ] some nodes will have more than one entry
|
|
node_area_table = []
|
|
mesh_face_area = 0
|
|
for mf in face_table:
|
|
if len(face_table[mf]) == 3: # 3 node mesh face triangle
|
|
# corner_node_area = mesh_face_area / 3.0
|
|
# P3
|
|
# /\
|
|
# / \
|
|
# /____\
|
|
# P1 P2
|
|
P1 = self.mesh_object.FemMesh.Nodes[face_table[mf][0]]
|
|
P2 = self.mesh_object.FemMesh.Nodes[face_table[mf][1]]
|
|
P3 = self.mesh_object.FemMesh.Nodes[face_table[mf][2]]
|
|
|
|
mesh_face_area = getTriangleArea(P1, P2, P3)
|
|
corner_node_area = mesh_face_area / 3.0
|
|
|
|
node_area_table.append((face_table[mf][0], corner_node_area))
|
|
node_area_table.append((face_table[mf][1], corner_node_area))
|
|
node_area_table.append((face_table[mf][2], corner_node_area))
|
|
|
|
elif len(face_table[mf]) == 4: # 4 node mesh face quad
|
|
FreeCAD.Console.PrintError('Face load on 4 node quad faces are not supported\n')
|
|
|
|
elif len(face_table[mf]) == 6: # 6 node mesh face triangle
|
|
# corner_node_area = 0
|
|
# middle_node_area = mesh_face_area / 3.0
|
|
# P3
|
|
# /\
|
|
# /t3\
|
|
# / \
|
|
# P6------P5
|
|
# / \ t4 / \
|
|
# /t1 \ /t2 \
|
|
# /_____\/_____\
|
|
# P1 P4 P2
|
|
P1 = self.mesh_object.FemMesh.Nodes[face_table[mf][0]]
|
|
P2 = self.mesh_object.FemMesh.Nodes[face_table[mf][1]]
|
|
P3 = self.mesh_object.FemMesh.Nodes[face_table[mf][2]]
|
|
P4 = self.mesh_object.FemMesh.Nodes[face_table[mf][3]]
|
|
P5 = self.mesh_object.FemMesh.Nodes[face_table[mf][4]]
|
|
P6 = self.mesh_object.FemMesh.Nodes[face_table[mf][5]]
|
|
|
|
mesh_face_t1_area = getTriangleArea(P1, P4, P6)
|
|
mesh_face_t2_area = getTriangleArea(P2, P5, P4)
|
|
mesh_face_t3_area = getTriangleArea(P3, P6, P5)
|
|
mesh_face_t4_area = getTriangleArea(P4, P5, P6)
|
|
mesh_face_area = mesh_face_t1_area + mesh_face_t2_area + mesh_face_t3_area + mesh_face_t4_area
|
|
middle_node_area = mesh_face_area / 3.0
|
|
|
|
node_area_table.append((face_table[mf][0], 0))
|
|
node_area_table.append((face_table[mf][1], 0))
|
|
node_area_table.append((face_table[mf][2], 0))
|
|
node_area_table.append((face_table[mf][3], middle_node_area))
|
|
node_area_table.append((face_table[mf][4], middle_node_area))
|
|
node_area_table.append((face_table[mf][5], middle_node_area))
|
|
|
|
elif len(face_table[mf]) == 8: # 8 node mesh face quad
|
|
FreeCAD.Console.PrintError('Face load on 8 node quad faces are not supported\n')
|
|
return node_area_table
|
|
|
|
def get_ref_shape_node_sum_geom_table(self, node_geom_table):
|
|
# shape could be Edge or Face, geom could be lenght or area
|
|
# summ of legth or area for each node of the ref_shape
|
|
node_sum_geom_table = {}
|
|
for n, A in node_geom_table:
|
|
# print(n, ' --> ', A)
|
|
if n in node_sum_geom_table:
|
|
node_sum_geom_table[n] = node_sum_geom_table[n] + A
|
|
else:
|
|
node_sum_geom_table[n] = A
|
|
return node_sum_geom_table
|
|
|
|
|
|
# Helpers
|
|
def getTriangleArea(P1, P2, P3):
|
|
vec1 = P2 - P1
|
|
vec2 = P3 - P1
|
|
vec3 = vec1.cross(vec2)
|
|
return 0.5 * vec3.Length
|
|
|
|
|
|
def getFemElementTable(fem_mesh):
|
|
""" getFemElementTable(fem_mesh): { elementid : [ nodeid, nodeid, ... , nodeid ] }"""
|
|
fem_element_table = {}
|
|
if is_solid_mesh(fem_mesh):
|
|
for i in fem_mesh.Volumes:
|
|
fem_element_table[i] = fem_mesh.getElementNodes(i)
|
|
elif is_shell_mesh(fem_mesh):
|
|
for i in fem_mesh.Faces:
|
|
fem_element_table[i] = fem_mesh.getElementNodes(i)
|
|
elif is_beam_mesh(fem_mesh):
|
|
for i in fem_mesh.Edges:
|
|
fem_element_table[i] = fem_mesh.getElementNodes(i)
|
|
else:
|
|
FreeCAD.Console.PrintError('Neither solid nor shell nor beam mesh!\n')
|
|
return fem_element_table
|
|
|
|
|
|
def getFemElementsByNodes(fem_element_table, node_list):
|
|
'''for every fem_element of fem_element_table
|
|
if all nodes of the fem_element are in node_list,
|
|
the fem_element is added to the list which is returned
|
|
e: elementlist
|
|
nodes: nodelist '''
|
|
e = [] # elementlist
|
|
for elementID in sorted(fem_element_table):
|
|
nodecount = 0
|
|
for nodeID in fem_element_table[elementID]:
|
|
if nodeID in node_list:
|
|
nodecount = nodecount + 1
|
|
if nodecount == len(fem_element_table[elementID]): # all nodes of the element are in the node_list!
|
|
e.append(elementID)
|
|
return e
|
|
|
|
|
|
def is_solid_mesh(fem_mesh):
|
|
if fem_mesh.VolumeCount > 0: # solid mesh
|
|
return True
|
|
|
|
|
|
def has_no_face_data(fem_mesh):
|
|
if fem_mesh.FaceCount == 0: # mesh has no face data, could be a beam mesh or a solid mesh without face data
|
|
return True
|
|
|
|
|
|
def is_shell_mesh(fem_mesh):
|
|
if fem_mesh.VolumeCount == 0 and fem_mesh.FaceCount > 0: # shell mesh
|
|
return True
|
|
|
|
|
|
def is_beam_mesh(fem_mesh):
|
|
if fem_mesh.VolumeCount == 0 and fem_mesh.FaceCount == 0 and fem_mesh.EdgeCount > 0: # beam mesh
|
|
return True
|
|
|
|
|
|
def femelements_count_ok(fem_element_table, count_femelements):
|
|
if count_femelements == len(fem_element_table):
|
|
# print('Count Elements written to CalculiX file: ', count_femelements)
|
|
# print('Count Elements of the FreeCAD FEM Mesh: ', len(fem_element_table))
|
|
return True
|
|
else:
|
|
print('ERROR: self.fem_element_table != count_femelements')
|
|
print('Count Elements written to CalculiX file: ', count_femelements)
|
|
print('Count Elements of the FreeCAD FEM Mesh: ', len(fem_element_table))
|
|
return False
|
|
|
|
|
|
def delete_duplicate_mesh_elements(refelement_table):
|
|
new_refelement_table = {} # duplicates deleted
|
|
for elem, nodes in refelement_table.items():
|
|
if sorted(nodes) not in sortlistoflistvalues(new_refelement_table.values()):
|
|
new_refelement_table[elem] = nodes
|
|
return new_refelement_table
|
|
|
|
|
|
def sortlistoflistvalues(listoflists):
|
|
new_list = []
|
|
for l in listoflists:
|
|
new_list.append(sorted(l))
|
|
return new_list
|
|
|
|
|
|
def get_ccx_elset_beam_name(mat_name, beamsec_name, mat_short_name=None, beamsec_short_name=None):
|
|
if not mat_short_name:
|
|
mat_short_name = 'Mat0'
|
|
if not beamsec_short_name:
|
|
beamsec_short_name = 'Beam0'
|
|
if len(mat_name + beamsec_name) > 20: # max identifier lenght in CalculiX for beam elsets
|
|
return mat_short_name + beamsec_short_name
|
|
else:
|
|
return mat_name + beamsec_name
|
|
|
|
|
|
def get_ccx_elset_shell_name(mat_name, shellth_name, mat_short_name=None, shellth_short_name=None):
|
|
if not mat_short_name:
|
|
mat_short_name = 'Mat0'
|
|
if not shellth_short_name:
|
|
shellth_short_name = 'Shell0'
|
|
if len(mat_name + shellth_name) > 80: # standard max identifier lenght in CalculiX
|
|
return mat_short_name + shellth_short_name
|
|
else:
|
|
return mat_name + shellth_name
|
|
|
|
|
|
def get_ccx_elset_solid_name(mat_name, solid_name=None, mat_short_name=None):
|
|
if not solid_name:
|
|
solid_name = 'Solid'
|
|
if not mat_short_name:
|
|
mat_short_name = 'Mat0'
|
|
if len(mat_name + solid_name) > 80: # standard max identifier lenght in CalculiX
|
|
return mat_short_name + solid_name
|
|
else:
|
|
return mat_name + solid_name
|
|
|
|
|
|
def get_ccx_elset_short_name(obj, i):
|
|
if hasattr(obj, "Proxy") and obj.Proxy.Type == 'MechanicalMaterial':
|
|
return 'Mat' + str(i)
|
|
elif hasattr(obj, "Proxy") and obj.Proxy.Type == 'FemBeamSection':
|
|
return 'Beam' + str(i)
|
|
elif hasattr(obj, "Proxy") and obj.Proxy.Type == 'FemShellThickness':
|
|
return 'Shell' + str(i)
|
|
else:
|
|
print('Error: ', obj.Name, ' --> ', obj.Proxy.Type)
|