Computational modeling of impact response with the RG damage model and the Meshless Local Petrov-Galerkin (MLPG) approaches

H. T. Liu, Z. D. Han, A. M. Rajendran, S. N. Atluri

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

The Rajendran-Grove (RG) ceramic damage model is a three-dimensional internal variable based constitutive model for ceramic materials, with the considerations of micro-crack extension and void collapse. In the present paper, the RG ceramic model is implemented into the newly developed computational framework based on the Meshless Local Petrov-Galerkin (MLPG) method, for solving high-speed impact and penetration problems. The ability of the RG model to describe the internal damage evolution and the effective material response is investigated. Several numerical examples are presented, including the rod-on-rod impact, plate-on-plate impact, and ballistic penetration. The computational results are compared with available experiments, as well as those obtained by the popular finite element code (Dyna3D).

Original languageEnglish
Pages (from-to)43-53
Number of pages11
JournalComputers, Materials and Continua
Volume4
Issue number1
StatePublished - 2006

Keywords

  • Ceramic damage
  • High-speed impact
  • MLPG
  • Material modeling
  • Meshless method
  • Penetration and perforation
  • Rajendran-Grove ceramic model

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