Applying a torque using FORCE and TRANSFORM constraints

[KgoaOT]

The transform constraint has been extended to allow for applied forces to be transformed into in a new coordinate system.

- start FreeCAD --> StartWB --> load "TorqueExample" file

TorqueExample.fcstd

(738.21 KiB) Downloaded 85 times

Essentially in this a example, a force is applied to the external surface of a pipe and then the coordinate system of the external surface is transformed into a cylindrical coordinate system. The direction of the applied force is in the global Y direction (this corresponds to the Tangential direction after the coordinate transformation).

Depicted below is pipe showing no displacement:

WithoutDisplacement.PNG (44.07 KiB) Viewed 856 times

Depicted below is pipe showing the displacement:

WithDisplacement.PNG (48.9 KiB) Viewed 856 times

The new branch can be found here:
https://github.com/makkemal/FreeCAD/tre ... traint/src

[bernd]

works great ! Added to my development branch for next FEM pull request.

https://github.com/berndhahnebach/FreeC ... meshregion