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

摘要

We present in this paper an iterative method using consistent mass matrix in axisym- metrical finite element analysis of hypervelocity impact. To retain the advantage of integration on an element-by-element basis which is at the heart of modern hydrocodes, we suggest that the first step should be to solve for accelerations at an advanced time step by using the lumped mass approach, then iterate using a consistent mass matrix to improve the estimate. Examples are given to show the improved resolution with the new method.