Adaptive Finite-element Analysis of Plastic Deformation of Plates under Projectile Impact

  • T. Prakash Indian Instirue of Technology Delhi, New Delhi
  • G.S. Sekhon Indian Instirue of Technology Delhi, New Delhi
  • N.K. Gupta Indian Instirue of Technology Delhi, New Delhi
Keywords: Finite-element analysis, aluminium plates, plastic deformation, projecile impact, closedform solutions, plasticity, metal plates, flow formulation

Abstract

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.
Published
2003-01-01
How to Cite
Prakash, T., Sekhon, G., & Gupta, N. (2003). Adaptive Finite-element Analysis of Plastic Deformation of Plates under Projectile Impact. Defence Science Journal, 53(1), 57-65. https://doi.org/10.14429/dsj.53.2129
Section
Special Issue Papers