Hello Ben,
You could do that in one simulation with *BOUNDARY_SPC and *BOUNDARY_PRESCRIBED_MOTION using the BIRTH/DEATH options to activate and deactivate the BCs at specific times. Have look at the user manual for more information on these keywords:
https://lsdyna.ansys.com/manuals/
If you are a commercial customer, please submit a service request on the Ansys Customer Portal:
support.ansys.com
We will be able to get your model and troubleshoot it. Ansys employees are not allowed to upload and download models in this forum.
Let me know how it goes.
Reno.
You are navigating away from the AIS Discovery experience