EXPERIMENTAL AND THEORETICAL ANALYSIS OF THE ELASTO-PLASTIC OBLIQUE IMPACT OF A ROD WITH A FLAT
Many analytical, numerical, and experimental studies are done in order to simulate and predict the motion of the objects after the impact. Finding the contact force has been the most challenging part for an impact problem. Nine different contact models are used in this study. The impact is divided into two phases: the loading and the unloading phase. All of the contact models are simulated and compared for the linear and angular motion during the impact and permanent deformation after the impact. An experimental setup is built and, an infrared camera has measured the motion of the rod before and after the impact. Coefficient of restitution and rebound angular velocity are compared for the simulations and experiments. It has been shown that selecting the appropriate contact model is very important for an impact problem.