Hi Wolfgam and thanks for your question!
This would fall under the category: Buckling - however this module is not yet implemented into SimScale but you can use a workaround with a nonlinear analysis which mimics the buckling behavior somehow. In this post from my colleague Richard you can find an example on how to approach these kind of problems.
Please make sure to add a vote to the buckling analysis feature right here: Buckling analysis feature addition request!
Hope I could help! For any additional hints & tips I will tag our FE experts FEA Squad.
All the best!
Jousef