Study on Collision Characteristics between Rigid Body and Elastomer Based on Stress Wave Theory

Abstract

Rigid body with initial velocity and no gravity contact with the elastomer, this process is too short and it can be described by collision. The geometry shape of contact surface is same as the contour of rigid body. Under the excitation of initial velocity, the particles of the contact surface produce motion and propagate around as the stress wave. The moving energy of rigid body is gradually consumed under the action of surface reaction force and goes through the deceleration stage. During the collision process, there is a continuous symmetrical stress pulse at the contact surface. This paper first discusses the interfacial stress pulse characteristics of infinite cylindrical side and elastomer under the condition of initial velocity and no gravity. And then the formation process of surface and surface particle stress pulse, the law of collision time and contact surface width are analyzed. This research is useful for the study of interfacial stress in finite boundary collision.