Allowable geometry limits for student version
 

I want to import a geometry having 89 bodies and it has 0.5 m length. When I try to import that geometry in designmodeler, an error message shows-" you have exceeded the allowable geometry for ansys academic. you can not save or export"."Turning Large model support on" is not helping. I tried to know the limitations for designmodeler but could not get that. Please help me.

You can import a maximum of 50 bodies
 

I just stumbled upon the same problem and as I had a body count quite close I just tried a little. I suppose you can import a maximum of 50 bodies with the student license. This threshold, x, is measured accurate to 50<=x<52 so you might try 51 but I think this is unlikely.