| # *************************************************************************** | |
| # * 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 planerotation" | |
| __author__ = "Bernd Hahnebach" | |
| __url__ = "https://www.freecad.org" | |
| from femmesh import meshtools | |
| def get_analysis_types(): | |
| return "all" # write for all analysis types | |
| def get_sets_name(): | |
| return "constraints_planerotation_node_sets" | |
| def get_constraint_title(): | |
| return "PlaneRotation Constraints" | |
| 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_meshdata_constraint(f, femobj, fric_obj, ccxwriter): | |
| # write nodes to file | |
| if not ccxwriter.femnodes_mesh: | |
| ccxwriter.femnodes_mesh = ccxwriter.femmesh.Nodes | |
| # info about ccxwriter.constraint_conflict_nodes: | |
| # is used to check if MPC and constraint fixed and | |
| # constraint displacement share same nodes | |
| # because MPC"s and constraints fixed and | |
| # constraints displacement can't share same nodes. | |
| # Thus call write_node_sets_constraints_planerotation has to be | |
| # after constraint fixed and constraint displacement | |
| l_nodes = femobj["Nodes"] | |
| f.write(f"*NSET,NSET={fric_obj.Name}\n") | |
| # Code to extract nodes and coordinates on the PlaneRotation support face | |
| nodes_coords = [] | |
| for node in l_nodes: | |
| nodes_coords.append( | |
| ( | |
| node, | |
| ccxwriter.femnodes_mesh[node].x, | |
| ccxwriter.femnodes_mesh[node].y, | |
| ccxwriter.femnodes_mesh[node].z, | |
| ) | |
| ) | |
| node_planerotation = meshtools.get_three_non_colinear_nodes(nodes_coords) | |
| for i in range(len(l_nodes)): | |
| if l_nodes[i] not in node_planerotation: | |
| node_planerotation.append(l_nodes[i]) | |
| MPC_nodes = [] | |
| for i in range(len(node_planerotation)): | |
| cnt = 0 | |
| for j in range(len(ccxwriter.constraint_conflict_nodes)): | |
| if node_planerotation[i] == ccxwriter.constraint_conflict_nodes[j]: | |
| cnt = cnt + 1 | |
| if cnt == 0: | |
| MPC = node_planerotation[i] | |
| MPC_nodes.append(MPC) | |
| for i in range(len(MPC_nodes)): | |
| f.write(f"{MPC_nodes[i]},\n") | |
| def write_constraint(f, femobj, fric_obj, ccxwriter): | |
| # floats read from ccx should use {:.13G}, see comment in writer module | |
| f.write("*MPC\n") | |
| f.write(f"PLANE,{fric_obj.Name}\n") | |