ITERATIVE METHOD USING CONSISTENT MASS MATRIX IN AXISYMMETRICAL FINITE ELEMENTS FOR ANALYSIS OF HYPERVELOCITY IMPACT 1)

We present in this paper the iterative method using consistent mass matrix in axisymmetrical finite elements for analysis of hypervelocity impact. To retain the advantage of the integration on an element by element basis which is at the heart of the modern hydrocodes, we suggest the iterative process where the first step is 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 estemate. Examples are given to show i...