The **Fem Workbench** provides modern Finite Element Analysis (FEA) workflow for FreeCAD. Mainly this means all tools to make an Finite Element Analysis are combined in one GUI.

The steps to do a FEA in FreeCAD FEM Workbench GUI are:

- Preprocessing
- Modeling the geometry, in which FreeCAD is already a nearly full-grown software.
- Create an Analysis:
- Create an FEM Mesh out of the geometrical model.
- Add Constraints such as loads and support fixes to the analysis model.
- Add a Material to the analysis model

- Solving
- Solve the system of equations from within the FreeCAD GUI.

- Postprocessing
- View Results inside FreeCAD GUI.

The above mainly describes how a FEA analysis is done inside FreeCAD FEM Workbench. For further documentation refer to the GUI Tools described later here.

As of FreeCAD version 0.15 and 0,16dev the FEM-Module can be used on Windows, Mac OSX and Linux platforms. Since FEM Workbench makes use of external software, the amount of manual intervention until the FEM workbench is ready to use will depend on the OS that you are using. Check out FEM Install.

- FEM mesh to mesh: Convert the surface of a FEM mesh to a mesh.
- Analysis container: Creates a new container for a mechanical analysis. If a solid is selected in the tree view before clicking on it, the meshing dialog will be opened next.
- Solver Calculix: Creates a new solver for this analysis. In most cases the solver is created together with the analysis.

- FEM mesh from shape: Opens the meshing dialog. Either select one of the predefined profiles or choose your own values.
- Mechanical material: Lets you select a material from the database.
- Beam cross section:
- Shell plate thickness:
- Nodes set: Creates/defines a node set. Not implemented yet.

- Constraint fixed: Used to define a fixed constraint on point/edge/face(s).
- Constraint displacement: Used to define a displacement constraint on point/edge/face(s).
- Constraint plane rotation: Used to define a plane rotation constraint on a planar face.
- Constraint contact: Used to define a contact constraint between two faces.

- Constraint self weight:
- Constraint force: Used to define a force in [N] applied uniformly to a selectable face in a definable direction.
- Constraint pressure: Used to define a pressure constraint.

- Constraint bearing: Used to define a bearing constraint.
- Constraint gear: Used to define a gear constraint.
- Constraint pulley: Used to define a pulley constraint.

- Constraint temperature: Used to define a temperature constraint on a point/edge/face(s).
- Constraint heatflux: Used to define a heat flux constraint on a face(s).
- Constraint initial temperature: Used to define the initial temperature of a body.

- Solver job control: Opens the menu to start the Calculix-Solver.
- Run solver calculation: [0.16].

- Purge results: Clears the current Results in the tree view.
- Show result: Used to display the result of the study (Von Mises Stress or Displacement)

- Post Create clip filter:
- Post Create scalar clip filter:
- Post Create cut filter:
- Post Create warp vector filter:

Tutorial 1 FEM CalculiX Cantilever 3D

Tutorial 2 FEM Tutorial

Tutorial 3 FEM Tutorial Python

Coupled thermal mechanical analysis tutorials Zip file containing PDF's

FEM Install for a detailed description how to set up a working FEM Module.

FEM Mesh for further Information about the FEM Mesh in FreeCAD

FEM CalculiX for further Information about the interface between FEM Module and the current Solver CalculiX

FEM Project for more detailed informations about the Units, Limitations and the Development of FEM Module.