Hello everybody   I am trying to simulate the contact between two cubes which are sliding horizontally on each other. I defined friction factor and did every step but after solution when I see the results, I understand that ANSYS ignores the contact between cubes. The upper cube which is imposed a displacement is pretty good but the bottom cube is intact. Can anyone help me what to do? What am I missing? One more thing: let's suppose that the friction factor between two sliding surfaces is defined as zero. Do we expect that surfaces do not engage with each other in the simulation?   Regards Meysam