A computational approach for multi-scale analysis of heterogeneous elasto-plastic media subjected to short duration loads

Peter W. Chung, Kumar K Tamma, Raju R. Namburu

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

The asymptotic expansion homogenization (AEH) approach has found wide acceptance for the study of heterogeneous structures due to its ability to account for multi-scale features. The emphasis of the present study is to develop consistent AEH numerical formulations to address elasto-plastic material response of structures subjected to short-duration transient loading. A second-order accurate velocity-based explicit time integration method, in conjunction with the AEH approach, is currently developed that accounts for large deformation non-linear material response. The approach is verified under degenerate homogeneous conditions using existing experimental data in the literature and its ability to account for heterogeneous conditions is demonstrated for a number of test problems.

Original languageEnglish (US)
Pages (from-to)825-848
Number of pages24
JournalInternational Journal for Numerical Methods in Engineering
Volume59
Issue number6
DOIs
StatePublished - Feb 14 2004

Keywords

  • Dynamics
  • Elasto-plasticity
  • Finite element method
  • Heterogenous media
  • Homogenization

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