Hello Seonghun,
I would setup this in transient structural and additionally I would use a remote displacement on the bottom face of the rotating rod and make sure to keep the longitudinal axis of rotating rod free, remaining DOF fixed. This should give you the results you’re looking for. Let us know, if this doesn’t help. For more information on Transient structural, follow this link:
Chapter 5: Transient Dynamic Analysis (ansys.com)
Regards,
Nanda.
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