Hi, I would like to ask whether there is a method to solve this model of mine. Basically, I had meshed all the parts in the model. The only thing is that there is no volume between the joints. I have seen journal papers in which they are able to solve the model by just defining link elements between the joints. For this model, I had to obtain the plantar stress in the foot. http://imageshack.us/photo/my-images/255/elementview.jpg/http:// This model is formed in ANSYS 13.0 The problem that I face is that the solver will indicate that a specific few nodes is in rigid body motion.