def setup(doc=None, solvertype="ccxtools"):
# setup model
if doc is None:
doc = init_doc()
# geometry objects
v1 = vec(-200, -100, 0)
v2 = vec(200, -100, 0)
v3 = vec(200, 100, 0)
v4 = vec(-200, 100, 0)
l1 = ln(v1, v2)
l2 = ln(v2, v3)
l3 = ln(v3, v4)
l4 = ln(v4, v1)
v5 = vec(0, 0, 0)
c1 = ci(50, v5)
face = Part.makeFace([Part.Wire([l1, l2, l3, l4]), c1],
"Part::FaceMakerBullseye")
geom_obj = doc.addObject("Part::Feature", "Hole_Plate")
geom_obj.Shape = face.extrude(vec(0, 0, 10))
doc.recompute()
if FreeCAD.GuiUp:
geom_obj.ViewObject.Document.activeView().viewAxonometric()
geom_obj.ViewObject.Document.activeView().fitAll()
# analysis
analysis = ObjectsFem.makeAnalysis(doc, "Analysis")
# solver
if solvertype == "calculix":
solver = analysis.addObject(
ObjectsFem.makeSolverCalculix(doc, "SolverCalculiX"))[0]
elif solvertype == "ccxtools":
solver = analysis.addObject(
ObjectsFem.makeSolverCalculixCcxTools(doc, "CalculiXccxTools"))[0]
solver.WorkingDir = u""
if solvertype == "calculix" or solvertype == "ccxtools":
solver.SplitInputWriter = False
solver.AnalysisType = "static"
solver.GeometricalNonlinearity = "linear"
solver.ThermoMechSteadyState = False
solver.MatrixSolverType = "default"
solver.IterationsControlParameterTimeUse = False
solver.GeometricalNonlinearity = 'nonlinear'
solver.MaterialNonlinearity = 'nonlinear'
# linear material
matprop = {}
matprop["Name"] = "CalculiX-Steel"
matprop["YoungsModulus"] = "210000 MPa"
matprop["PoissonRatio"] = "0.30"
matprop["Density"] = "7900 kg/m^3"
material = analysis.addObject(
ObjectsFem.makeMaterialSolid(doc, "Material_lin"))[0]
material.Material = matprop
# nonlinear material
nonlinear_material = analysis.addObject(
ObjectsFem.makeMaterialMechanicalNonlinear(doc, material,
"Material_nonlin"))[0]
nonlinear_material.YieldPoint1 = '240.0, 0.0'
nonlinear_material.YieldPoint2 = '270.0, 0.025'
# check solver attributes, Nonlinearity needs to be set to nonlinear
# fixed_constraint
fixed_constraint = analysis.addObject(
ObjectsFem.makeConstraintFixed(doc, "ConstraintFixed"))[0]
fixed_constraint.References = [(geom_obj, "Face4")]
# force constraint
pressure_constraint = doc.Analysis.addObject(
ObjectsFem.makeConstraintPressure(doc, "ConstraintPressure"))[0]
pressure_constraint.References = [(geom_obj, "Face2")]
pressure_constraint.Pressure = 130.0
pressure_constraint.Reversed = True
# mesh
from .meshes.mesh_platewithhole_tetra10 import create_nodes, create_elements
fem_mesh = Fem.FemMesh()
control = create_nodes(fem_mesh)
if not control:
FreeCAD.Console.PrintError("Error on creating nodes.\n")
control = create_elements(fem_mesh)
if not control:
FreeCAD.Console.PrintError("Error on creating elements.\n")
femmesh_obj = analysis.addObject(ObjectsFem.makeMeshGmsh(doc,
mesh_name))[0]
femmesh_obj.FemMesh = fem_mesh
femmesh_obj.Part = geom_obj
femmesh_obj.SecondOrderLinear = False
doc.recompute()
return doc
def setup(doc=None, solvertype="ccxtools"):
""" Nonlinear material example, plate with hole.
https://forum.freecadweb.org/viewtopic.php?f=24&t=31997&start=30
https://forum.freecadweb.org/viewtopic.php?t=33974&start=90
https://forum.freecadweb.org/viewtopic.php?t=35893
plate: 400x200x10 mm
hole: diameter 100 mm (half cross section)
load: 130 MPa tension
linear material: Steel, E = 210000 MPa, my = 0.3
nonlinear material: '240.0, 0.0' to '270.0, 0.025'
TODO nonlinear material: give more information, use values from harry
TODO compare results with example from HarryvL
"""
if doc is None:
doc = init_doc()
# part
import Part
from FreeCAD import Vector as vec
from Part import makeLine as ln
from Part import makeCircle as ci
v1 = vec(-200, -100, 0)
v2 = vec(200, -100, 0)
v3 = vec(200, 100, 0)
v4 = vec(-200, 100, 0)
l1 = ln(v1, v2)
l2 = ln(v2, v3)
l3 = ln(v3, v4)
l4 = ln(v4, v1)
v5 = vec(0, 0, 0)
c1 = ci(50, v5)
face = Part.makeFace([Part.Wire([l1, l2, l3, l4]), c1],
"Part::FaceMakerBullseye")
partfem = doc.addObject("Part::Feature", "Hole_Plate")
partfem.Shape = face.extrude(vec(0, 0, 10))
doc.recompute()
if FreeCAD.GuiUp:
import FreeCADGui
FreeCADGui.ActiveDocument.activeView().viewAxonometric()
FreeCADGui.SendMsgToActiveView("ViewFit")
# analysis
analysis = ObjectsFem.makeAnalysis(doc, "Analysis")
# solver
if solvertype == "calculix":
solver = analysis.addObject(
ObjectsFem.makeSolverCalculix(doc, "SolverCalculiX"))[0]
elif solvertype == "ccxtools":
solver = analysis.addObject(
ObjectsFem.makeSolverCalculixCcxTools(doc, "CalculiXccxTools"))[0]
solver.WorkingDir = u""
if solvertype == "calculix" or solvertype == "ccxtools":
solver.SplitInputWriter = False
solver.AnalysisType = "static"
solver.GeometricalNonlinearity = "linear"
solver.ThermoMechSteadyState = False
solver.MatrixSolverType = "default"
solver.IterationsControlParameterTimeUse = False
solver.GeometricalNonlinearity = 'nonlinear'
solver.MaterialNonlinearity = 'nonlinear'
# linear material
matprop = {}
matprop["Name"] = "CalculiX-Steel"
matprop["YoungsModulus"] = "210000 MPa"
matprop["PoissonRatio"] = "0.30"
matprop["Density"] = "7900 kg/m^3"
material = analysis.addObject(
ObjectsFem.makeMaterialSolid(doc, "Material_lin"))[0]
material.Material = matprop
# nonlinear material
nonlinear_material = analysis.addObject(
ObjectsFem.makeMaterialMechanicalNonlinear(doc, material,
"Material_nonlin"))[0]
nonlinear_material.YieldPoint1 = '240.0, 0.0'
nonlinear_material.YieldPoint2 = '270.0, 0.025'
# check solver attributes, Nonlinearity needs to be set to nonlinear
# fixed_constraint
fixed_constraint = analysis.addObject(
ObjectsFem.makeConstraintFixed(doc, "ConstraintFixed"))[0]
fixed_constraint.References = [(partfem, "Face4")]
# force constraint
pressure_constraint = doc.Analysis.addObject(
ObjectsFem.makeConstraintPressure(doc, "ConstraintPressure"))[0]
pressure_constraint.References = [(partfem, "Face2")]
pressure_constraint.Pressure = 130.0
pressure_constraint.Reversed = True
# mesh
from .meshes.mesh_platewithhole_tetra10 import create_nodes, create_elements
fem_mesh = Fem.FemMesh()
control = create_nodes(fem_mesh)
if not control:
FreeCAD.Console.PrintError("Error on creating nodes.\n")
control = create_elements(fem_mesh)
if not control:
FreeCAD.Console.PrintError("Error on creating elements.\n")
femmesh_obj = analysis.addObject(
doc.addObject("Fem::FemMeshObject", mesh_name))[0]
femmesh_obj.FemMesh = fem_mesh
doc.recompute()
return doc
def setup(doc=None, solvertype="ccxtools"):
# init FreeCAD document
if doc is None:
doc = init_doc()
# explanation object
# just keep the following line and change text string in get_explanation method
manager.add_explanation_obj(
doc, get_explanation(manager.get_header(get_information())))
# geometric object
v1 = vec(-200, -100, 0)
v2 = vec(200, -100, 0)
v3 = vec(200, 100, 0)
v4 = vec(-200, 100, 0)
l1 = ln(v1, v2)
l2 = ln(v2, v3)
l3 = ln(v3, v4)
l4 = ln(v4, v1)
v5 = vec(0, 0, 0)
c1 = ci(50, v5)
face = Part.makeFace([Part.Wire([l1, l2, l3, l4]), c1],
"Part::FaceMakerBullseye")
geom_obj = doc.addObject("Part::Feature", "Hole_Plate")
geom_obj.Shape = face.extrude(vec(0, 0, 10))
doc.recompute()
if FreeCAD.GuiUp:
geom_obj.ViewObject.Document.activeView().viewAxonometric()
geom_obj.ViewObject.Document.activeView().fitAll()
# analysis
analysis = ObjectsFem.makeAnalysis(doc, "Analysis")
# solver
if solvertype == "calculix":
solver_obj = ObjectsFem.makeSolverCalculix(doc, "SolverCalculiX")
elif solvertype == "ccxtools":
solver_obj = ObjectsFem.makeSolverCalculixCcxTools(
doc, "CalculiXccxTools")
solver_obj.WorkingDir = u""
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_obj.SplitInputWriter = False
solver_obj.AnalysisType = "static"
solver_obj.GeometricalNonlinearity = "linear"
solver_obj.ThermoMechSteadyState = False
solver_obj.MatrixSolverType = "default"
solver_obj.IterationsControlParameterTimeUse = False
solver_obj.GeometricalNonlinearity = 'nonlinear'
solver_obj.MaterialNonlinearity = 'nonlinear'
analysis.addObject(solver_obj)
# linear material
material_obj = ObjectsFem.makeMaterialSolid(doc, "Material_lin")
matprop = material_obj.Material
matprop["Name"] = "CalculiX-Steel"
matprop["YoungsModulus"] = "210000 MPa"
matprop["PoissonRatio"] = "0.30"
material_obj.Material = matprop
analysis.addObject(material_obj)
# nonlinear material
name_nlm = "Material_nonlin"
nonlinear_mat = ObjectsFem.makeMaterialMechanicalNonlinear(
doc, material_obj, name_nlm)
nonlinear_mat.YieldPoint1 = '240.0, 0.0'
nonlinear_mat.YieldPoint2 = '270.0, 0.025'
analysis.addObject(nonlinear_mat)
# check solver attributes, Nonlinearity needs to be set to nonlinear
# constraint fixed
con_fixed = ObjectsFem.makeConstraintFixed(doc, "ConstraintFixed")
con_fixed.References = [(geom_obj, "Face4")]
analysis.addObject(con_fixed)
# pressure constraint
con_pressure = ObjectsFem.makeConstraintPressure(doc, "ConstraintPressure")
con_pressure.References = [(geom_obj, "Face2")]
con_pressure.Pressure = 130.0
con_pressure.Reversed = True
analysis.addObject(con_pressure)
# mesh
from .meshes.mesh_platewithhole_tetra10 import create_nodes, create_elements
fem_mesh = Fem.FemMesh()
control = create_nodes(fem_mesh)
if not control:
FreeCAD.Console.PrintError("Error on creating nodes.\n")
control = create_elements(fem_mesh)
if not control:
FreeCAD.Console.PrintError("Error on creating elements.\n")
femmesh_obj = analysis.addObject(
ObjectsFem.makeMeshGmsh(doc, get_meshname()))[0]
femmesh_obj.FemMesh = fem_mesh
femmesh_obj.Part = geom_obj
femmesh_obj.SecondOrderLinear = False
doc.recompute()
return doc