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FEM: solver CalculiX: add geometrical nonlinear analysis

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This commit is contained in:
Bernd Hahnebach 2016-08-01 21:56:31 +01:00 committed by wmayer
parent da91fded97
commit d8c294c54d
3 changed files with 16 additions and 2 deletions
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8
src/Mod/Fem/FemInputWriterCcx.py
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@ -225,8 +225,12 @@ class FemInputWriterCcx(FemInputWriter.FemInputWriter):
f.write('\n***********************************************************\n')
f.write('** One step is needed to run the mechanical analysis of FreeCAD\n')
f.write('** written by {} function\n'.format(sys._getframe().f_code.co_name))
f.write('*STEP\n')
f.write('*STATIC\n')
static_frequency_step = '*STEP'
if self.solver_obj.GeometricalNonlinearity == "nonlinear" and self.analysis_type == 'static':
static_frequency_step += ', NLGEOM' # https://www.comsol.com/blogs/what-is-geometric-nonlinearity/
elif self.solver_obj.GeometricalNonlinearity == "nonlinear" and self.analysis_type == 'frequency':
print('Analysis type frequency and geometrical nonlinear analyis are not allowed together, linear is used instead!')
f.write(static_frequency_step + '\n')
def write_constraints_fixed(self, f):
f.write('\n***********************************************************\n')

1
src/Mod/Fem/FemToolsCcx.py
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@ -35,6 +35,7 @@ from PySide import QtCore
class FemToolsCcx(FemTools.FemTools):
known_analysis_types = ["static", "frequency"]
known_geom_nonlinear_types = ["linear", "nonlinear"]
finished = QtCore.Signal(int)
## The constructor

9
src/Mod/Fem/_FemSolverCalculix.py
View File

@ -50,6 +50,15 @@ class _FemSolverCalculix():
analysis_type = fem_prefs.GetInt("AnalysisType", 0)
obj.AnalysisType = FemToolsCcx.FemToolsCcx.known_analysis_types[analysis_type]
known_geom_nonlinear_types = ["linear", "nonlinear"]
obj.addProperty("App::PropertyEnumeration", "GeometricalNonlinearity", "Fem", "Type of geometrical nonlinearity")
obj.GeometricalNonlinearity = known_geom_nonlinear_types
geom = ccx_prefs.GetBool("NonlinearGeometry", False)
if geom is True:
obj.GeometricalNonlinearity = known_geom_nonlinear_types[1] # nonlinear
else:
obj.GeometricalNonlinearity = known_geom_nonlinear_types[0] # linear
obj.addProperty("App::PropertyIntegerConstraint", "NumberOfEigenmodes", "Fem", "Number of modes for frequency calculations")
noe = fem_prefs.GetInt("NumberOfEigenmodes", 10)
obj.NumberOfEigenmodes = (noe, 1, 100, 1)