Hi, My requirement is to simulate and analyse the real time deformation of a mechatronic steel square structure, where preloads are imposed from either side of the plate using piezo actuators. The 2 of the 4  loads vary in a sinusoidal pattern from 0 -200N while the other 2 loads have a constant 100N.  I want to carry out an FEA animation with the sinusoidal load variation.  So far I only managed to impose static forces of 200N.  Can someone tell me as to how I can animate the structural deformation under varying loads. I am using inventor 2015's static analysis