Fem Workbench

The Fem Workbench offers data structures and commands to work with Fem meshes.

General


[0.14] The FEM-Module is only available with the Windows-Versions of FreeCAD.

Linux-Versions would need further work for implementation

Analysis types
The FEM-Module supports linear analysis of isotropic (uniformity in all directions) material.

Mechanical analysis with calculation of resulting stress (v.-Mises) and displacement is supported.

[0.14] The FEM-module supports analysis of single parts (solids). Multi-body analysis ist not implemented yet.

Material definition
Every analysis needs at least one Material object to be fully defined. The easiest is to add a FreeCAD standard material. FreeCAD comes if a set of Material definitions you can use out of the box. But you can define additinal ones very easy. The FreeCAD material system allows a lot of additional values if needed. A good source to find material values is the matweb.com/ web site.

creation of meshes
Creating a mesh with one Tet-10 Elements:

If you want to have predefined element and node numbering:

Visual handling
Highlight some nodes on the view:

Postprocessing colors and displacement:

Highlight some nodes on the view:

Element Types
This description is based on the MED format as described [https://hammi.extra.cea.fr/static/MED/web_med/logiciels/med-2.3.1/doc/html/modele_de_donnees.html#3. here].

Example
See FEM Analysis