117 lines
5.1 KiB
Python
117 lines
5.1 KiB
Python
# ***************************************************************************
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# * Copyright (c) 2016 Bernd Hahnebach <bernd@bimstatik.org> *
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# * *
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# * This file is part of the FreeCAD CAx development system. *
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# * *
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# * This program is free software; you can redistribute it and/or modify *
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# * it under the terms of the GNU Lesser General Public License (LGPL) *
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# * as published by the Free Software Foundation; either version 2 of *
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# * the License, or (at your option) any later version. *
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# * for detail see the LICENCE text file. *
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# * *
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# * This program is distributed in the hope that it will be useful, *
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# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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# * GNU Library General Public License for more details. *
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# * *
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# * You should have received a copy of the GNU Library General Public *
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# * License along with this program; if not, write to the Free Software *
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# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
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# * USA *
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# * *
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# ***************************************************************************
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__title__ = "FreeCAD FEM material mechanical nonlinear document object"
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__author__ = "Bernd Hahnebach"
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__url__ = "https://www.freecad.org"
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## @package material_mechanicalnonlinear
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# \ingroup FEM
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# \brief nonlinear mechanical material object
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from . import base_fempythonobject
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class MaterialMechanicalNonlinear(base_fempythonobject.BaseFemPythonObject):
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"""
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The MaterialMechanicalNonlinear object
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"""
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Type = "Fem::MaterialMechanicalNonlinear"
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def __init__(self, obj):
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super().__init__(obj)
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self.add_properties(obj)
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def onDocumentRestored(self, obj):
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# YieldPoints was (until 0.19) stored as 3 separate variables. Consolidate them if present.
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yield_points = []
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if hasattr(obj, "YieldPoint1"):
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if obj.YieldPoint1:
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yield_points.append(obj.YieldPoint1)
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obj.removeProperty("YieldPoint1")
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if hasattr(obj, "YieldPoint2"):
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if obj.YieldPoint2:
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yield_points.append(obj.YieldPoint2)
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obj.removeProperty("YieldPoint2")
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if hasattr(obj, "YieldPoint3"):
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if obj.YieldPoint3:
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yield_points.append(obj.YieldPoint3)
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obj.removeProperty("YieldPoint3")
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self.add_properties(obj)
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if yield_points:
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obj.YieldPoints = yield_points
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# TODO: If in the future more nonlinear options are added, update choices here.
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def add_properties(self, obj):
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# this method is called from onDocumentRestored
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# thus only add and or set a attribute
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# if the attribute does not exist
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if not hasattr(obj, "LinearBaseMaterial"):
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obj.addProperty(
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"App::PropertyLink",
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"LinearBaseMaterial",
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"Base",
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"Set the linear material the nonlinear builds upon.",
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)
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obj.setPropertyStatus("LinearBaseMaterial", "LockDynamic")
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if not hasattr(obj, "MaterialModelNonlinearity"):
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choices_nonlinear_material_models = ["isotropic hardening", "kinematic hardening"]
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obj.addProperty(
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"App::PropertyEnumeration",
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"MaterialModelNonlinearity",
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"Fem",
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"Set the type on nonlinear material model",
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)
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obj.setPropertyStatus("MaterialModelNonlinearity", "LockDynamic")
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obj.MaterialModelNonlinearity = choices_nonlinear_material_models
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obj.MaterialModelNonlinearity = choices_nonlinear_material_models[0]
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if (
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hasattr(obj, "MaterialModelNonlinearity")
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and obj.MaterialModelNonlinearity == "simple hardening"
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):
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updated_choices_nonlinear_material_models = [
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"isotropic hardening",
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"kinematic hardening",
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]
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obj.MaterialModelNonlinearity = updated_choices_nonlinear_material_models
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obj.MaterialModelNonlinearity = updated_choices_nonlinear_material_models[0]
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if not hasattr(obj, "YieldPoints"):
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obj.addProperty(
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"App::PropertyStringList",
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"YieldPoints",
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"Fem",
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"Set stress and strain for yield points as a list of strings, "
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'each point "stress, plastic strain"',
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)
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obj.setPropertyStatus("YieldPoints", "LockDynamic")
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obj.YieldPoints = []
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