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[Solution]

Yes, it is possible to define stiffness/damping as a function of time in RBD. One can either writing the python script directly or using the variable load extension. Attached is a simple test case. It defines time varying stiffness or damping using Python table. Note that this model needs to be solved in meters. Reference: help documentation for Variable Load extension: https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v221/en/wb_sim/rbd_using_var_load_ext.html

Attachments:
1. TimeDepStiffDamp_v221.zip