| # *************************************************************************** | |
| # * Copyright (c) 2021 Bernd Hahnebach <bernd@bimstatik.org> * | |
| # * * | |
| # * 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 * | |
| # * * | |
| # *************************************************************************** | |
| __title__ = "FreeCAD FEM calculix constraint temperature" | |
| __author__ = "Bernd Hahnebach" | |
| __url__ = "https://www.freecad.org" | |
| import FreeCAD | |
| def get_analysis_types(): | |
| return ["thermomech"] | |
| # name must substitute underscores for whitespace (#7360) | |
| def get_sets_name(): | |
| return "constraints_temperature_node_sets" | |
| def get_constraint_title(): | |
| return "Fixed temperature constraint applied" | |
| def write_meshdata_constraint(f, femobj, temp_obj, ccxwriter): | |
| f.write(f"*NSET,NSET={temp_obj.Name}\n") | |
| for n in femobj["Nodes"]: | |
| f.write(f"{n},\n") | |
| def get_before_write_meshdata_constraint(): | |
| return "" | |
| def get_after_write_meshdata_constraint(): | |
| return "" | |
| def get_before_write_constraint(): | |
| return "" | |
| def get_after_write_constraint(): | |
| return "" | |
| def write_constraint(f, femobj, temp_obj, ccxwriter): | |
| # floats read from ccx should use {:.13G}, see comment in writer module | |
| NumberOfNodes = len(femobj["Nodes"]) | |
| if temp_obj.EnableAmplitude: | |
| temp_amplitude = f", AMPLITUDE={temp_obj.Name}" | |
| else: | |
| temp_amplitude = "" | |
| if temp_obj.ConstraintType == "Temperature": | |
| f.write(f"*BOUNDARY{temp_amplitude}\n") | |
| f.write( | |
| "{},11,11,{}\n".format( | |
| temp_obj.Name, FreeCAD.Units.Quantity(temp_obj.Temperature.getValueAs("K")) | |
| ) | |
| ) | |
| f.write("\n") | |
| elif temp_obj.ConstraintType == "CFlux": | |
| f.write(f"*CFLUX{temp_amplitude}\n") | |
| # CFLUX has to be specified in mW | |
| f.write( | |
| "{},11,{}\n".format( | |
| temp_obj.Name, | |
| FreeCAD.Units.Quantity(temp_obj.CFlux.getValueAs("mW")) / NumberOfNodes, | |
| ) | |
| ) | |
| f.write("\n") | |