I am a new user for femap (NAstran). I have a question regaridng how to simulate the impact of two solids. I created two solids first with material and properties specified. (in the attached file). Then I created a connect property used for connect two regions with a connector. One region is the bottom surface of the top solids and another region is the top surface if the bottom solid. I used advanced nonlinear solver. I am wondering if this is right way to specify contact problems in femap (Nastran) for two solids. If not, would anyone elucidate me how to solve this problem? Thanks!