[jonahk3]

Hello! I am new to this forum and relatively new to ANSYS AIM 18.0. I am trying to do a structural analysis of a quadcopter frame, and I am getting an error that I can't seem to fix. In the "Physics" tab of the workflow, it shows a specific region and tells me that I need to define a shell thickness for that region. It looks like it is referring to one of the spacers (which are hollow inside). However, when I go back to geometry to define a shell thickness for that spacer, it tells me that the location I have selected is invalid. How do I fix this issue? I need to know exactly what needs to be defined and how to do so without getting this error. It won't let me attach any screenshots because they are too big, but if you would like to see them for reference, let me know and I will get them to you some other way. PLEASE HELP. Thank you!