Improving failure sub-models in an orthotropic plasticity-based material model

Loukham Shyamsunder, Bilal Khaled, Subramaniam D. Rajan, Gunther Blankenhorn

Research output: Contribution to journalArticlepeer-review

Abstract

Theoretical details of two failure criteria implemented in an orthotropic plasticity model are presented. Improvements to the well-known Puck Failure criterion and a recently developed Generalized Tabulated Failure criterion are used to illustrate how to link a failure sub-model to existing deformation and damage sub-models in the context of explicit finite element analysis. These models are implemented in LS-DYNA, a commercial transient dynamic finite element code. Two validation tests are used to evaluate the failure sub-model implementation and improvements - a stacked-ply test carried out at room temperature under quasi-static tensile and compressive loadings, and a high-speed, projectile impact test where there is significant damage and material failure of the impacted panel. Results indicate that developed procedures and improvements provide the analyst with a reasonable and systematic approach to building predictive impact simulation models.

Original languageEnglish (US)
Pages (from-to)2025-2042
Number of pages18
JournalJournal of Composite Materials
Volume55
Issue number15
DOIs
StatePublished - Jun 2021
Externally publishedYes

Keywords

  • Orthotropic composite
  • failure modeling
  • impact loads
  • plasticity

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Materials Chemistry

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