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# * Copyright (c) 2019 Bernd Hahnebach <bernd@bimstatik.org> *
# * Copyright (c) 2020 Sudhanshu Dubey <sudhanshu.thethunder@gmail.com *
# * *
# * This file is part of the FreeCAD CAx development system. *
# * *
# * This program is free software; you can redistribute it and/or modify *
# * it under the terms of the GNU Lesser General Public License (LGPL) *
# * as published by the Free Software Foundation; either version 2 of *
# * the License, or (at your option) any later version. *
# * for detail see the LICENCE text file. *
# * *
# * This program is distributed in the hope that it will be useful, *
# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
# * GNU Library General Public License for more details. *
# * *
# * You should have received a copy of the GNU Library General Public *
# * License along with this program; if not, write to the Free Software *
# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
# * USA *
# * *
# ***************************************************************************
import FreeCAD
import ObjectsFem
from . import manager
from .boxanalysis_base import setup_boxanalysisbase
from .manager import init_doc
def get_information():
return {
"name": "Box Analysis Static",
"meshtype": "solid",
"meshelement": "Tet10",
"constraints": ["fixed", "force", "pressure"],
"solvers": ["ccxtools", "elmer"],
"material": "solid",
"equations": ["mechanical"],
}
def get_explanation(header=""):
return (
header
+ """
To run the example from Python console use:
from femexamples.boxanalysis_static import setup
setup()
See forum topic post:
...
"""
)
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())))
# setup box static, add a fixed, force and a pressure constraint
doc = setup_boxanalysisbase(doc, solvertype)
geom_obj = doc.Box
analysis = doc.Analysis
# solver
if solvertype == "ccxtools":
solver_obj = ObjectsFem.makeSolverCalculiXCcxTools(doc, "CalculiXCcxTools")
solver_obj.WorkingDir = ""
elif solvertype == "elmer":
solver_obj = ObjectsFem.makeSolverElmer(doc, "SolverElmer")
ObjectsFem.makeEquationElasticity(doc, solver_obj)
else:
FreeCAD.Console.PrintWarning(
"Unknown or unsupported solver type: {}. "
"No solver object was created.\n".format(solvertype)
)
if 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
analysis.addObject(solver_obj)
# constraint fixed
con_fixed = ObjectsFem.makeConstraintFixed(doc, "FemConstraintFixed")
con_fixed.References = [(geom_obj, "Face1")]
analysis.addObject(con_fixed)
# constraint force
con_force = ObjectsFem.makeConstraintForce(doc, "FemConstraintForce")
con_force.References = [(geom_obj, "Face6")]
con_force.Force = "40000.0 N"
con_force.Direction = (geom_obj, ["Edge5"])
con_force.Reversed = True
analysis.addObject(con_force)
# constraint pressure
con_pressure = ObjectsFem.makeConstraintPressure(doc, name="FemConstraintPressure")
con_pressure.References = [(geom_obj, "Face2")]
con_pressure.Pressure = "1000.0 MPa"
con_pressure.Reversed = False
analysis.addObject(con_pressure)
doc.recompute()
return doc
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