A modified model for collision of two elastic-perfectly plastic spheres and expression of coefficient of restitution

To describe the collision of elastic-perfectly plastic spheres,Thornton proposed an simplified theoretical model by dividing the collision into four stages,namely elastic loading,yield,plastic loading and elastic unloading.Furthermore,coefficient of restitution‘s dependence of pre-impact velocity...To describe the collision of elastic-perfectly plastic spheres,Thornton proposed an simplified theoretical model by dividing the collision into four stages,namely elastic loading,yield,plastic loading and elastic unloading.Furthermore,coefficient of restitution‘s dependence of pre-impact velocity...中国力学学会(Chinese Society of Theoretical and Applied Mechanics)