A Finite Element Method for Elastoimpact Contact Structures with Translational Motio

抄録

A finite element method applicable to an analysis of elastoimpact contact structures with a translational motion is formulated by use of the virtual work principle for two elastoimpact bodies in a contact state, which the author has presented. The method is applied to a two-dimensional behavior for longitudinal impact of two uniform rods with an equal cross section. Although the contact stresses by the method fluctuate periodically due to the lateral effect of inertia, their mean value agrees well with that by the theory of propagation of a one-dimensional elastic stress wave. Moreover we investigate the stick, slip and separate states on the impact surface between the two rods. Hence the use of the method makes it possible to calculate contact and separate states of various elastoimpact contact structures.