Preferenze di FEM
Le finestre delle preferenze di FEM si trovano nell'Editor delle Preferenze, Modifica → Preferenze → Fem.
Sono disponibili cinque schede, una per la configurazione generale dell'ambiente.
The current supported external solvers are:
Generale
On the General tab you can specify the following:
Gmsh
On 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 |
CalculiX
On the CalculiX tab you can specify the following:
Elmer
On the Elmer tab you can specify the following:
Name | Description |
---|---|
ElmerGrid: Search in known binary directories | If checked, FreeCAD will look for the binary of the grid writer utility of the Elmer in known (usual) directories |
ElmerGrid binary path | The path to the the binary of the grid writer utility of the Elmer |
ElmerSolver: Search in known binary directories | If checked, FreeCAD will look for the solver binary of Elmer in known (usual) directories |
ElmerSolver binary path | The path to the the solver binary of Elmer |
Mystran
On the Mystran tab you can specify the following:
Name | Description |
---|---|
Search in known binary directories | If checked, FreeCAD will look for the binary of the Mystran in known (usual) directories |
Mystran binary path | The path to the the binary of the Mystran |
Z88
On 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. |
Material
On the Material tab you can specify the following:
Name | Description |
---|---|
Use built-in materials | The cards built-in to FreeCAD will be listed as available. |
Use materials from Materials directory in user's FreeCAD preference directory | The cards from FreeCAD's preferences directory will be listed as available. On Windows, that would for example be this folder:
C:\Users\<username>\AppData\Roaming\FreeCAD\Material |
Use materials from user defined directory | Also material cards also from the specified directory will be listed as available. |
Delete card duplicates | Duplicate cards will be deleted from the displayed material card list. |
Sort by resources | Material cards will appear sorted by their resources (locations). If unchecked, they will be sorted by their name. |
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, Arch, Assembly, 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