文章基本信息

标题：Adaptive Finite-element Analysis of Plastic Deformation of Plates under Projectile Impact
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作者：T. Prakash ; G.S. Sekhon ; N.K. Gupta 等
期刊名称：Defence Science Journal
印刷版ISSN：0976-464X
出版年度：2003
卷号：53
期号：1
页码：57-65
DOI：10.14429/dsj.53.2129
语种：English
出版社：Defence Scientific Information & Documentation Centre
摘要：This paper deals with the finite-element analysis of plastic deformation of plates during normal impact of projectile on plates, The finite element method implemented here is based on the flow formulation of plasticity. During projectile impact the geometrical configuration of domain is progressively altered that generally causes distortion of mesh. It affects the accuracy of finite-element solution, Hence, a posteriori error estimation for the computed finite-element solution has been incorporated to capture the zones of high stress and strain gradients. The h-refinement of the mesh is carried out over such domain to limit the solution error, Two projectile impact problems on a circular aluminium plate-one by a blunt-end projectile and another by a hemi-spherical-headed projectile-are analysed to illustrate the proposed method.
关键词：Finite-element analysis, aluminium plates, plastic deformation, projecile impact, closedform solutions, plasticity, metal plates, flow formulation