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FEM: examples, elmer tut1, eigenvalues, fix some problems

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This commit is contained in:
Bernd Hahnebach
2021-03-17 10:45:37 +01:00
parent 16e851e0e0
commit b34fe9bf19
1 changed files with 37 additions and 48 deletions
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85
src/Mod/Fem/femexamples/elmer_nonguitutorial01_eigenvalue_of_elastic_beam.py
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@@ -45,19 +45,20 @@ def init_doc(doc=None):
def get_information():
info = {"name": "Box Analysis Static",
"meshtype": "solid",
"meshelement": "Tet10",
"constraints": [],
"solvers": ["calculix", "elmer"],
"material": "solid",
"equation": "elasticity"
}
info = {
"name": "NonGui Tutorial 01 - Eigenvalue of elastic beam",
"meshtype": "solid",
"meshelement": "Tet10",
"constraints": [],
"solvers": ["elmer"],
"material": "solid",
"equation": "elasticity"
}
return info
def setup_base(doc=None, solvertype="ccxtools"):
# setup box base model
def setup(doc=None, solvertype="elmer"):
# setup model
if doc is None:
doc = init_doc()
@@ -76,6 +77,23 @@ def setup_base(doc=None, solvertype="ccxtools"):
# analysis
analysis = ObjectsFem.makeAnalysis(doc, "Analysis")
# solver
if solvertype == "elmer":
solver_object = analysis.addObject(
ObjectsFem.makeSolverElmer(doc, "SolverElmer")
)[0]
eq_obj = ObjectsFem.makeEquationElasticity(doc, solver_object)
eq_obj.LinearSolverType = "Direct"
# direct solver was used in the turorial, thus used here too
# the iterative is much faster and gives the same results
eq_obj.DoFrequencyAnalysis = True
eq_obj.CalculateStresses = True
else:
FreeCAD.Console.PrintWarning(
"Not known or not supported solver type: {}. "
"No solver object was created.\n".format(solvertype)
)
# material
material_object = analysis.addObject(
ObjectsFem.makeMaterialSolid(doc, "MechanicalMaterial")
@@ -87,6 +105,15 @@ def setup_base(doc=None, solvertype="ccxtools"):
mat["Density"] = "2330 kg/m^3"
material_object.Material = mat
# fixed_constraint
fixed_constraint = analysis.addObject(
ObjectsFem.makeConstraintFixed(doc, name="FemConstraintFixed")
)[0]
fixed_constraint.References = [
(geom_obj, "Face1"),
(geom_obj, "Face2")
]
# mesh
from .meshes.mesh_eigenvalue_of_elastic_beam_tetra10 import create_nodes
from .meshes.mesh_eigenvalue_of_elastic_beam_tetra10 import create_elements
@@ -106,41 +133,3 @@ def setup_base(doc=None, solvertype="ccxtools"):
doc.recompute()
return doc
def setup(doc=None, solvertype="elmer"):
# setup box static, add a fixed, force and a pressure constraint
doc = setup_base(doc, solvertype)
analysis = doc.Analysis
# solver
if solvertype == "calculix":
solver_object = analysis.addObject(
ObjectsFem.makeSolverCalculix(doc, "SolverCalculiX")
)[0]
elif solvertype == "ccxtools":
solver_object = analysis.addObject(
ObjectsFem.makeSolverCalculixCcxTools(doc, "CalculiXccxTools")
)[0]
solver_object.WorkingDir = u""
elif solvertype == "elmer":
solver_object = analysis.addObject(
ObjectsFem.makeSolverElmer(doc, "SolverElmer")
)[0]
ObjectsFem.makeEquationElasticity(doc, solver_object)
else:
FreeCAD.Console.PrintWarning(
"Not known or not supported solver type: {}. "
"No solver object was created.\n".format(solvertype)
)
if solvertype == "calculix" or solvertype == "ccxtools":
solver_object.SplitInputWriter = False
solver_object.AnalysisType = "static"
solver_object.GeometricalNonlinearity = "linear"
solver_object.ThermoMechSteadyState = False
solver_object.MatrixSolverType = "default"
solver_object.IterationsControlParameterTimeUse = False
doc.recompute()
return doc