HiThank you for leaving a comment. nYes, I used tetrahedrons mesh and it doesn't work for that either (I tried many strategies and looked it up on google carefully before posting it here ). Also, I asked my friends with different versions (2018 and 2019 with different licenses) of Ansys workbench and they had the same issue as well. nAlso, I tried static structure and it is the same for that also.Maybe someone else has an idea? (Thanks)nn