MULTISCALE IMPACT MODELS: MULTIBODY DYNAMICS AND WAVE PROPAGATION

摘要

For the investigation of impact processes different time scales are used. Using multibody dynamics the overall motion is computed on a slow time scale. The elastodynamic effects are computed on a fast time scale using analytical and numerical models. Then, the fast time scale results are used to model the impact on the slow time scale accurately. Experimental validation proves the accuracy of the impact simulations on multiple time scales for impacts on an aluminum rod, a brass rod, and a half-circular plate as well as an aluminum ball. While the rods produce clearly deterministic signals, the ball responds with random signals.