FEM: constraint contact: add implementation for solver CalculiX
This commit is contained in:
Bernd Hahnebach
wmayer
parent
116c9717cc
commit
9107e92b52
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@ -45,6 +45,7 @@ class FemInputWriter():
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analysis_obj, solver_obj,
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mesh_obj, mat_obj,
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fixed_obj, displacement_obj,
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contact_obj,
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selfweight_obj, force_obj, pressure_obj,
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beamsection_obj, shellthickness_obj,
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analysis_type, eigenmode_parameters,
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@ -56,6 +57,7 @@ class FemInputWriter():
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self.material_objects = mat_obj
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self.fixed_objects = fixed_obj
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self.displacement_objects = displacement_obj
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self.contact_objects = contact_obj
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self.selfweight_objects = selfweight_obj
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self.force_objects = force_obj
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self.pressure_objects = pressure_obj
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@ -40,6 +40,7 @@ class FemInputWriterCcx(FemInputWriter.FemInputWriter):
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analysis_obj, solver_obj,
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mesh_obj, mat_obj,
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fixed_obj, displacement_obj,
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contact_obj,
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selfweight_obj, force_obj, pressure_obj,
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beamsection_obj, shellthickness_obj,
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analysis_type=None, eigenmode_parameters=None,
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@ -49,6 +50,7 @@ class FemInputWriterCcx(FemInputWriter.FemInputWriter):
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analysis_obj, solver_obj,
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mesh_obj, mat_obj,
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fixed_obj, displacement_obj,
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contact_obj,
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selfweight_obj, force_obj, pressure_obj,
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beamsection_obj, shellthickness_obj,
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analysis_type, eigenmode_parameters,
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@ -69,8 +71,12 @@ class FemInputWriterCcx(FemInputWriter.FemInputWriter):
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self.write_node_sets_constraints_fixed(inpfile)
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if self.displacement_objects:
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self.write_node_sets_constraints_displacement(inpfile)
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if self.contact_objects:
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self.write_surfaces_contraints_contact(inpfile)
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self.write_materials(inpfile)
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self.write_femelementsets(inpfile)
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if self.contact_objects:
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self.write_constraints_contact(inpfile)
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self.write_step_begin(inpfile)
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if self.fixed_objects:
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self.write_constraints_fixed(inpfile)
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@ -152,6 +158,30 @@ class FemInputWriterCcx(FemInputWriter.FemInputWriter):
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for n in femobj['Nodes']:
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f.write(str(n) + ',\n')
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def write_surfaces_contraints_contact(self, f):
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# get surface nodes and write them to file
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f.write('\n***********************************************************\n')
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f.write('** Surfaces for contact constraint\n')
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f.write('** written by {} function\n'.format(sys._getframe().f_code.co_name))
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obj = 0
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for femobj in self.contact_objects: # femobj --> dict, FreeCAD document object is femobj['Object']
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contact_obj = femobj['Object']
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cnt = 0
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obj = obj + 1
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for o, elem_tup in contact_obj.References:
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for elem in elem_tup:
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ref_shape = o.Shape.getElement(elem)
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cnt = cnt + 1
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if ref_shape.ShapeType == 'Face':
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if cnt == 1:
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name = "DEP" + str(obj)
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else:
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name = "IND" + str(obj)
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f.write('*SURFACE, NAME =' + name + '\n')
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v = self.mesh_object.FemMesh.getccxVolumesByFace(ref_shape)
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for i in v:
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f.write("{},S{}\n".format(i[0], i[1]))
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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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@ -286,6 +316,28 @@ class FemInputWriterCcx(FemInputWriter.FemInputWriter):
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f.write(disp_obj_name + ',6,6,' + str(disp_obj.zRotation) + '\n')
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f.write('\n')
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def write_constraints_contact(self, f):
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f.write('\n***********************************************************\n')
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f.write('** Contact Constraints\n')
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f.write('** written by {} function\n'.format(sys._getframe().f_code.co_name))
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obj = 0
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for femobj in self.contact_objects: # femobj --> dict, FreeCAD document object is femobj['Object']
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obj = obj + 1
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contact_obj = femobj['Object']
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f.write('*CONTACT PAIR, INTERACTION=INT' + str(obj) + ',TYPE=SURFACE TO SURFACE\n')
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ind_surf = "IND" + str(obj)
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dep_surf = "DEP" + str(obj)
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f.write(dep_surf + ',' + ind_surf + '\n')
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f.write('*SURFACE INTERACTION, NAME=INT' + str(obj) + '\n')
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f.write('*SURFACE BEHAVIOR,PRESSURE-OVERCLOSURE=LINEAR\n')
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slope = contact_obj.Slope
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f.write(str(slope) + ' \n')
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friction = contact_obj.Friction
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if friction > 0:
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f.write('*FRICTION \n')
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stick = (slope / 10.0)
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f.write(str(friction) + ', ' + str(stick) + ' \n')
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def write_constraints_selfweight(self, f):
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f.write('\n***********************************************************\n')
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f.write('** Self weight\n')
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@ -37,6 +37,7 @@ class FemInputWriterZ88(FemInputWriter.FemInputWriter):
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analysis_obj, solver_obj,
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mesh_obj, mat_obj,
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fixed_obj, displacement_obj,
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contact_obj,
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selfweight_obj, force_obj, pressure_obj,
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beamsection_obj, shellthickness_obj,
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analysis_type=None, eigenmode_parameters=None,
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@ -46,6 +47,7 @@ class FemInputWriterZ88(FemInputWriter.FemInputWriter):
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analysis_obj, solver_obj,
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mesh_obj, mat_obj,
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fixed_obj, displacement_obj,
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contact_obj,
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selfweight_obj, force_obj, pressure_obj,
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beamsection_obj, shellthickness_obj,
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analysis_type, eigenmode_parameters,
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@ -153,6 +153,7 @@ class FemTools(QtCore.QRunnable, QtCore.QObject):
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# [{'Object':pressure_constraints, 'xxxxxxxx':value}, {}, ...]
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# [{'Object':beam_sections, 'xxxxxxxx':value}, {}, ...]
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# [{'Object':shell_thicknesses, 'xxxxxxxx':value}, {}, ...]
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# [{'Object':contact_constraints, 'xxxxxxxx':value}, {}, ...]
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## @var mesh
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# mesh of the analysis. Used to generate .inp file and to show results
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@ -189,6 +190,10 @@ class FemTools(QtCore.QRunnable, QtCore.QObject):
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# set of displacements for the analysis. Updated with update_objects
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# Individual displacement_constraints are Proxy.Type "FemConstraintDisplacement"
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self.displacement_constraints = []
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## @var contact_constraints
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# set of contact constraints from the analysis. Updated with update_objects
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# Individual constraints are "Fem::ConstraintContact" type
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self.contact_constraints = []
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found_solver_for_use = False
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for m in self.analysis.Member:
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@ -235,6 +240,10 @@ class FemTools(QtCore.QRunnable, QtCore.QObject):
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displacement_constraint_dict = {}
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displacement_constraint_dict['Object'] = m
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self.displacement_constraints.append(displacement_constraint_dict)
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elif m.isDerivedFrom("Fem::ConstraintContact"):
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contact_constraint_dict = {}
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contact_constraint_dict['Object'] = m
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self.contact_constraints.append(contact_constraint_dict)
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elif hasattr(m, "Proxy") and m.Proxy.Type == "FemBeamSection":
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beam_section_dict = {}
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beam_section_dict['Object'] = m
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@ -92,6 +92,7 @@ class FemToolsCcx(FemTools.FemTools):
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self.analysis, self.solver,
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self.mesh, self.materials,
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self.fixed_constraints, self.displacement_constraints,
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self.contact_constraints,
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self.selfweight_constraints, self.force_constraints, self.pressure_constraints,
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self.beam_sections, self.shell_thicknesses,
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self.analysis_type, self.eigenmode_parameters,
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@ -84,6 +84,7 @@ class FemToolsZ88(FemTools.FemTools):
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self.analysis, self.solver,
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self.mesh, self.materials,
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self.fixed_constraints, self.displacement_constraints,
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self.contact_constraints,
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self.selfweight_constraints, self.force_constraints, self.pressure_constraints,
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self.beam_sections, self.shell_thicknesses,
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self.analysis_type, None,
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