At the time it was written, CalculiX was not included in the Debian repositories, so there were several personal packages in Launchpad. Note: the thread Ubuntu Repository discusses the creation of the Ubuntu PPA packages. The binaries for ccx 2.14 work on Debian Stretch, but not on Debian Buster due to dependency problems. If they are stable enough, they may be added to the daily or stable repositories. The freecad-community PPA also provides netgen, gmsh, and calculix-ccx packages for testing. Sudo apt - get install netgen sudo apt - get install gmsh sudo apt - get install calculix - ccx If the program is correctly installed, you may run the command netgen in the terminal to launch the graphical interface of the netgen -V Troubles with gmsh in FEM wb (netgen nostalgy)ĭespite Netgen not being available from within the FEM Workbench, it can still be used by itself to produce meshes that can then be imported.patching Netgen 5.3.1 to work with OCCT 7.1.Ubuntu Daily Builds PPA now using OCC 7.1.0.(Ubuntu Daily PPA) Transitioning to OCCT7, VTK7.Nevertheless, shortly afterwards some users reported success in patching Netgen 5.3.1, so that it worked with OCCT 7.x and FreeCAD.įor historical reference, see the threads: As FreeCAD transitioned from OCE 0.17 to OCCT 7.1, Netgen 4.9.13 failed to link against this version of OCCT, so it was decided to drop Netgen support in the FEM Workbench (the Netgen button was removed). For it to work with the FEM Workbench, FreeCAD had to be linked against the Netgen libraries at compile time. In previous versions of FreeCAD, Netgen was the default mesher. Please edit this information if Netgen is usable again with the stable release of FreeCAD. Note: The Netgen mesher was disabled in March 2017, when FreeCAD transitioned to using OCCT 7.1. See FEM Mesh for various possibilities of obtaining a valid mesh for analysis. If you compiled the mesher yourself, untick the option, and give the correct path to the binary. If the mesher is installed, make sure the FEM Workbench is able to find the binary go to Edit → Preferences → FEM → Gmsh → Search in known binary directories. 6 Packaged by : buildd Web site : http : // gmsh. 6 License : GNU General Public License Build OS : Linu圆4 Build date : 20171107 Build host : lgw01 - amd64 - 034 Build options : 64 Bit Ann Bamg Bfgs Blas ( Generic ) Blossom C ++ 11 Cgns Chaco DIntegration Dlopen Fltk Gmm Jpeg Kbipack Lapack ( Generic ) LinuxJoystick MPI MathEx Med Mesh Mmg3d Mpeg NativeFileChooser Netgen ONELAB ONELABMetamodel OpenCASCADE OpenGL OptHom Parser Plugins Png Post Python Solver TetGen / BR Tetgen Voro3D Zlib FLTK version : 1.3.
If the solver is correctly installed, you may run the single command ccx in the terminal to obtain a simple ccx Given that there are many programs that can generate a mesh, it is recommended to install the solver, and make sure it's working first. FreeCAD writes a CalculiX input file, starts the solver, and reads the output, which can then be presented visually in the viewport this means the CalculiX binary is standalone and independent from FreeCAD. The default solver to perform finite element calculations is CalculiX, a simple solver for analysis of structures. Workflow of the FEM Workbench the workbench calls two external programs to perform meshing of a solid object, and perform the actual solution of the finite element problem FEM solver You can test if your FreeCAD installation is ready for FEA by running the FEM CalculiX Cantilever 3D example which is included with every installation of FreeCAD since v0.17. To be able to perform finite element analysis (FEA) within the FEM Workbench, FreeCAD makes use of two external programs: one is used for generating the FEM Mesh, and the other for numerically solving the actual analysis.
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