| # *************************************************************************** | |
| # * 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 selfweight" | |
| __author__ = "Bernd Hahnebach" | |
| __url__ = "https://www.freecad.org" | |
| def get_analysis_types(): | |
| return ["buckling", "static", "thermomech"] | |
| def get_constraint_title(): | |
| return "Self weight Constraint" | |
| def get_before_write_constraint(): | |
| return "" | |
| def get_after_write_constraint(): | |
| return "" | |
| def write_constraint(f, femobj, selwei_obj, ccxwriter): | |
| # floats read from ccx should use {:.13G}, see comment in writer module | |
| f.write("*DLOAD\n") | |
| f.write( | |
| # elset, GRAV, magnitude, direction x, dir y ,dir z | |
| "{},GRAV,{:.13G},{:.13G},{:.13G},{:.13G}\n".format( | |
| ccxwriter.ccx_eall, | |
| selwei_obj.GravityAcceleration.getValueAs( | |
| "mm/s^2" | |
| ).Value, # actual magnitude of gravity vector | |
| selwei_obj.GravityDirection.x, # coordinate x of normalized gravity vector | |
| selwei_obj.GravityDirection.y, # y | |
| selwei_obj.GravityDirection.z, # z | |
| ) | |
| ) | |
| f.write("\n") | |
| # grav (erdbeschleunigung) is equal for all elements | |
| # should be only one constraint | |
| # different element sets for different density | |
| # are written in the material element sets already | |