FEM Preferences
The preferences screen of the FEM Workbench are found in the Preferences Editor, Edit → Preferences → FEM.
There are several tabs in the FEM workbench preferences, starting with the General configuration of the workbench. The rest of the tabs control how FEM interacts with supported external solvers.
The current supported external solvers are:
General
CalculiX
Gmsh
In the Gmsh tab you can specify the following:
Name | Description |
---|---|
Search in known binary directories | If checked, FreeCAD will look for the binary of Gmsh in known (usual) directories |
Gmsh binary path | The path to the the binary of Gmsh |
Z88
In the Z88 tab you can specify the following:
Name | Description |
---|---|
Search in known binary directories | If checked, FreeCAD will look for the binary named z88r of the Z88 solver in known (usual) directories |
z88r binary path | The path to the the binary named z88r of the Z88 solver |
Solver method | The solver method used by the Z88 solver for new simulations. |
Max places in stiffness matrix | This is relevant when the solver method Simple Cholesky is used. After starting the solver, it might tell you that you need to increase the MAXGS value. In this case increase the max places and re-run the solver. |
Max places in coincidence vector | This is relevant when one of the iterative solver methods is used. After starting the solver, it might tell you that you need to increase the MAXKOI value. In this case increase the max places and re-run the solver. |
Elmer
FEM
- Materials: Solid, Fluid, Nonlinear mechanical, Reinforced (concrete); Material editor
- Element geometry: Beam (1D), Beam rotation (1D), Shell (2D), Fluid flow (1D)
Constraints
- Electromagnetic: Electrostatic potential, Current density, Magnetization
- Geometrical: Plane rotation, Section print, Transform
- Mechanical: Fixed, Displacement, Contact, Tie, Spring, Force, Pressure, Centrif, Self weight
- Thermal: Initial temperature, Heat flux, Temperature, Body heat source
- Overwrite Constants: Constant vacuum permittivity
- Solve: CalculiX Standard, Elmer, Mystran, Z88; Equations: Deformation, Elasticity, Electrostatic, Electricforce, Magnetodynamic, Magnetodynamic 2D, Flow, Flux, Heat; Solver: Solver control, Solver run
- Results: Purge, Show; Postprocessing: Apply changes, Pipeline from result, Warp filter, Scalar clip filter, Function cut filter, Region clip filter, Contours filter, Line clip filter, Stress linearization plot, Data at point clip filter, Filter function plane, Filter function sphere, Filter function cylinder, Filter function box
- Additional: Preferences; FEM Install, FEM Mesh, FEM Solver, FEM CalculiX, FEM Concrete; FEM Element Types
User documentation
- Getting started
- Installation: Download, Windows, Linux, Mac, Additional components, Docker, AppImage, Ubuntu Snap
- Basics: About FreeCAD, Interface, Mouse navigation, Selection methods, Object name, Preferences, Workbenches, Document structure, Properties, Help FreeCAD, Donate
- Help: Tutorials, Video tutorials
- Workbenches: Std Base, Assembly, BIM, CAM, Draft, FEM, Inspection, Mesh, OpenSCAD, Part, PartDesign, Points, Reverse Engineering, Robot, Sketcher, Spreadsheet, Surface, TechDraw, Test Framework
- Hubs: User hub, Power users hub, Developer hub