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

- December 26, 2020 at 10:48 am
  
  bobsik641
  Subscriber
  
  Hello,nin Explicit Dynamics Autodyn, I would just create a cylindrical coordinate system and apply a velocity/displacement boundary condition.nHowever, it seems that cylindrical CSs are not supported by LS-DYNA...nWhat should I do to impose rotational velocity on a rigid shaft?.
- January 5, 2021 at 10:45 pm
  
  Chris Quan
  Ansys Employee
  
  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.nFor rotational motion, DOF is equal to one of 5, 6, 7, 8, -8, 9, -9, 10, -10, 11, -11.n
- January 8, 2021 at 7:43 pm
  
  bobsik641
  Subscriber
  
  Well, I guess I'll stick to the Autodyn Explicit Dynamics...nThank you for your time thoughn

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