Research on Collision with Low Restitution Coefficient

Abstract

The Hertz contact theory remains the foundation for almost all of the available contact force models, but by itself, it is not appropriate for most impacts in practice due to the amount of energy dissipated during the impact. So, there are several dissipative contact force models that considering the damping term based on the Hertz contact force model, the article mainly does the research to several typical dissipative contact force model including the Hunt-Crossley model, Lankarani-Nikravesh model and Gonthier model, analysis their difference and scope of application, the results show that: for the collision which the material has the high coefficient of restitution, three dissipative models are closed and both has a good precision, for the collision with low coefficient of restitution, that Gonthier model is more suitable.