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ITERATIVE METHOD USING CONSISTENT MASS MATRIX IN AXISYMMETRICAL FINITE ELEMENT ANALYSIS OF HYPERVELOCITY IMPACT

โœ Scribed by Song Shun-Cheng; Duan Zhu-Ping


Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
192 KB
Volume
21
Category
Article
ISSN
0734-743X

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โœฆ Synopsis


We present in this paper an iterative method using consistent mass matrix in axisymmetrical 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.