Question: LoadForceVector-Function (UserFunction)

[csas8682]

Hello,

I have a two questions regarding the LoadForceVector-Function:

• If I want to use the loadVectorUserFunction is it necessary, or rather does it make a difference, if I pass a loadVector as argument when I use a userfunction anyway? As far as I understand the loadVectorUserFunction returns the loadVector and therefore updates the loadVector in every time step?

I am asking, because I tried to leave the loadVector empty, the simulation and calculation worked, but no Load was displayed on my mbs. The load was certainly applied, because it was still moving...

• In the VisualizationSettings is it possible to update the loadVector. I am askings, because I try to use a time- (or rather position-) depending loadVector, and wonder if I could see it in the visualzation if it gets updated correctly.

Thank you very much in advance 🙏🏼I hope my questions are clear!

Kind regards!

[jgerstmayr]

Python user function can currently not be called within the visualization; therefore, the loadVector cannot be updated during drawing. Add a sensor, which shows the currently computed value by the user function. If you want to update the value during visualization, use a preStepUserFunction (which will just update during simulation), or use a graphicsDataUserFunction - e.g. on a GroundObject - which can draw globally and synchronized with visualization states.