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FEM: nonlinear materials, solver CalculiX implementation

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This commit is contained in:
Bernd Hahnebach 2016-09-25 19:36:52 +01:00 committed by Yorik van Havre
parent 854002f08b
commit 956a13da38
6 changed files with 42 additions and 19 deletions
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5
src/Mod/Fem/FemInputWriter.py
View File

@ -43,7 +43,7 @@ import os
class FemInputWriter():
def __init__(self,
analysis_obj, solver_obj,
mesh_obj, mat_obj,
mesh_obj, matlin_obj, matnonlin_obj,
fixed_obj, displacement_obj,
contact_obj, planerotation_obj, transform_obj,
selfweight_obj, force_obj, pressure_obj,
@ -54,7 +54,8 @@ class FemInputWriter():
self.analysis = analysis_obj
self.solver_obj = solver_obj
self.mesh_object = mesh_obj
self.material_objects = mat_obj
self.material_objects = matlin_obj
self.material_nonlinear_objects = matnonlin_obj
self.fixed_objects = fixed_obj
self.displacement_objects = displacement_obj
self.contact_objects = contact_obj

17
src/Mod/Fem/FemInputWriterCcx.py
View File

@ -38,7 +38,7 @@ import FemInputWriter
class FemInputWriterCcx(FemInputWriter.FemInputWriter):
def __init__(self,
analysis_obj, solver_obj,
mesh_obj, mat_obj,
mesh_obj, matlin_obj, matnonlin_obj,
fixed_obj, displacement_obj,
contact_obj, planerotation_obj, transform_obj,
selfweight_obj, force_obj, pressure_obj,
@ -50,7 +50,7 @@ class FemInputWriterCcx(FemInputWriter.FemInputWriter):
FemInputWriter.FemInputWriter.__init__(
self,
analysis_obj, solver_obj,
mesh_obj, mat_obj,
mesh_obj, matlin_obj, matnonlin_obj,
fixed_obj, displacement_obj,
contact_obj, planerotation_obj, transform_obj,
selfweight_obj, force_obj, pressure_obj,
@ -337,6 +337,15 @@ class FemInputWriterCcx(FemInputWriter.FemInputWriter):
f.write('{0:.3e}\n'.format(TEC_in_mmK))
f.write('*SPECIFIC HEAT\n')
f.write('{0:.3e}\n'.format(SH_in_JkgK))
if self.solver_obj.MaterialNonlinearity == 'nonlinear':
if len(self.material_nonlinear_objects) == 1: # workaround since multiple is on TODO
nl_mat_obj = self.material_nonlinear_objects[0]['Object']
if nl_mat_obj.MaterialModelNonlinearity == "simple hardening":
f.write('*PLASTIC\n')
f.write(nl_mat_obj.YieldPoint1 + '\n')
f.write(nl_mat_obj.YieldPoint2 + '\n')
else:
print('Only one nonlinear material supported!!')
def write_constraints_initialtemperature(self, f):
f.write('\n***********************************************************\n')
@ -405,7 +414,11 @@ class FemInputWriterCcx(FemInputWriter.FemInputWriter):
analysis_static += ', SOLVER=ITERATIVE SCALING'
elif self.solver_obj.MatrixSolverType == "iterativecholesky":
analysis_static += ', SOLVER=ITERATIVE CHOLESKY'
if self.solver_obj.IterationsUserDefinedIncrementations:
analysis_static += ', DIRECT'
f.write(analysis_static + '\n')
if self.solver_obj.IterationsUserDefinedIncrementations:
f.write(self.solver_obj.IterationsUserDefinedTimeStepLength + '\n')
def write_step_begin_thermomech(self, f):
f.write('\n***********************************************************\n')

4
src/Mod/Fem/FemInputWriterZ88.py
View File

@ -35,7 +35,7 @@ import FemInputWriter
class FemInputWriterZ88(FemInputWriter.FemInputWriter):
def __init__(self,
analysis_obj, solver_obj,
mesh_obj, mat_obj,
mesh_obj, matlin_obj, matnonlin_obj,
fixed_obj, displacement_obj,
contact_obj, planerotation_obj, transform_obj,
selfweight_obj, force_obj, pressure_obj,
@ -47,7 +47,7 @@ class FemInputWriterZ88(FemInputWriter.FemInputWriter):
FemInputWriter.FemInputWriter.__init__(
self,
analysis_obj, solver_obj,
mesh_obj, mat_obj,
mesh_obj, matlin_obj, matnonlin_obj,
fixed_obj, displacement_obj,
contact_obj, planerotation_obj, transform_obj,
selfweight_obj, force_obj, pressure_obj,

31
src/Mod/Fem/FemTools.py
View File

@ -147,7 +147,8 @@ class FemTools(QtCore.QRunnable, QtCore.QObject):
self.mesh.ViewObject.applyDisplacement(displacement_factor)
def update_objects(self):
# [{'Object':materials}, {}, ...]
# [{'Object':materials_linear}, {}, ...]
# [{'Object':materials_nonlinear}, {}, ...]
# [{'Object':fixed_constraints, 'NodeSupports':bool}, {}, ...]
# [{'Object':force_constraints, 'NodeLoad':value}, {}, ...
# [{'Object':pressure_constraints, 'xxxxxxxx':value}, {}, ...]
@ -161,10 +162,14 @@ class FemTools(QtCore.QRunnable, QtCore.QObject):
## @var mesh
# mesh of the analysis. Used to generate .inp file and to show results
self.mesh = None
## @var materials
# set of materials from the analysis. Updated with update_objects
## @var materials_linear
# set of linear materials from the analysis. Updated with update_objects
# Individual materials are "App::MaterialObjectPython" type
self.materials = []
self.materials_linear = []
## @var materials_nonlinear
# set of nonlinear materials from the analysis. Updated with update_objects
# Individual materials are Proxy.Type "FemMaterialMechanicalNonlinear"
self.materials_nonlinear = []
## @var fixed_constraints
# set of fixed constraints from the analysis. Updated with update_objects
# Individual constraints are "Fem::ConstraintFixed" type
@ -240,9 +245,13 @@ class FemTools(QtCore.QRunnable, QtCore.QObject):
else:
raise Exception('FEM: Multiple mesh in analysis not yet supported!')
elif m.isDerivedFrom("App::MaterialObjectPython"):
material_dict = {}
material_dict['Object'] = m
self.materials.append(material_dict)
material_linear_dict = {}
material_linear_dict['Object'] = m
self.materials_linear.append(material_linear_dict)
elif hasattr(m, "Proxy") and m.Proxy.Type == "FemMaterialMechanicalNonlinear":
material_nonlinear_dict = {}
material_nonlinear_dict['Object'] = m
self.materials_nonlinear.append(material_nonlinear_dict)
elif m.isDerivedFrom("Fem::ConstraintFixed"):
fixed_constraint_dict = {}
fixed_constraint_dict['Object'] = m
@ -329,16 +338,16 @@ class FemTools(QtCore.QRunnable, QtCore.QObject):
message += "FEM mesh has no volume and no shell elements, either define a beam section or provide a FEM mesh with volume elements.\n"
if self.mesh.FemMesh.VolumeCount == 0 and self.mesh.FemMesh.FaceCount == 0 and self.mesh.FemMesh.EdgeCount == 0:
message += "FEM mesh has neither volume nor shell or edge elements. Provide a FEM mesh with elements!\n"
# materials
if not self.materials:
# materials_linear
if not self.materials_linear:
message += "No material object defined in the analysis\n"
has_no_references = False
for m in self.materials:
for m in self.materials_linear:
if len(m['Object'].References) == 0:
if has_no_references is True:
message += "More than one material has an empty references list (Only one empty references list is allowed!).\n"
has_no_references = True
for m in self.materials:
for m in self.materials_linear:
mat_map = m['Object'].Material
if 'YoungsModulus' not in mat_map:
message += "No YoungsModulus defined for at least one material.\n"

2
src/Mod/Fem/FemToolsCcx.py
View File

@ -88,7 +88,7 @@ class FemToolsCcx(FemTools.FemTools):
try:
inp_writer = iw.FemInputWriterCcx(
self.analysis, self.solver,
self.mesh, self.materials,
self.mesh, self.materials_linear, self.materials_nonlinear,
self.fixed_constraints, self.displacement_constraints,
self.contact_constraints, self.planerotation_constraints, self.transform_constraints,
self.selfweight_constraints, self.force_constraints, self.pressure_constraints,

2
src/Mod/Fem/FemToolsZ88.py
View File

@ -82,7 +82,7 @@ class FemToolsZ88(FemTools.FemTools):
try:
inp_writer = iw.FemInputWriterZ88(
self.analysis, self.solver,
self.mesh, self.materials,
self.mesh, self.materials_linear, self.materials_nonlinear,
self.fixed_constraints, self.displacement_constraints,
self.contact_constraints, self.planerotation_constraints, self.transform_constraints,
self.selfweight_constraints, self.force_constraints, self.pressure_constraints,