Hi Everybody

I had made a surface in solidworks which is not a simple surface, so I couldn't draw it by extrude feature! I want to move it to Cosmos and analyse it for stresses, but SolidWorks can't do this, and also I can't move my surface to drawing part. So I want to know that is there any way in SolidWorks to change a surface model to a solid model, I mean to give a thickness to it... If there is not any way, so tell me how I can analyse my surface body in Cosmos and get a drawing of my surface body?

ThankYou