Hello Hamideh,

Yes, I have faced those issues. What do you see in the model results at the last substep? What has that excessive displacement and why.

I can take a look at your model if you are using Workbench, but not APDL. Open your project and open Mechanical. Clear Generated Data on the Mesh and close Mechanical. In Workbench, do a File, Save As and name it with a suffix -share, then do a File Archive and create a .wbpz file.  Copy that file to a file sharing site such as Google Drive, OneDrive or Jumpshare. Copy the link to that file and paste it into your reply and say what version of Ansys you are using.