How to impose rotational velocity on a rigid body in Workbench LS-DYNA?

bobsik641 · December 2020

Hello,

in Explicit Dynamics Autodyn, I would just create a cylindrical coordinate system and apply a velocity/displacement boundary condition.

However, it seems that cylindrical CSs are not supported by LS-DYNA...

What should I do to impose rotational velocity on a rigid shaft?

cxquan · January 5

In WB LS-DYNA system, you need to add a keyword *Boundary_Prescribed_Motion using keyword snippet to specify the rotation. An example model can be found in this web page at https://www.dynaexamples.com/introduction/examples-manual/load/presrcibed.

For rotational motion, DOF is equal to one of 5, 6, 7, 8, -8, 9, -9, 10, -10, 11, -11.

bobsik641 · January 8

Well, I guess I'll stick to the Autodyn Explicit Dynamics...

Thank you for your time though

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