Iterative method using consistent mass matrix in axisymmetrical finite element analysis of hypervelocity impact

We present in this paper an iterative method using consistent mass matrix i n axisymmetrical finite element analysis of hypervelocity impact. To retain the advantage of integration on an element-by-element basis which is at th e heart of modern hydrocodes, we suggest that the first step should be to s olve for accelerations at an advanced time step by using the lumped mass ap proach, then iterate using a consistent mass matrix to improve the estimate . Examples are given to show the improved resolution with the new method. ( C) 1998 Elsevier Science Ltd. All rights reserved.