Damage characterization of composites to support an orthotropic plasticity material model

Bilal Khaled, Loukham Shyamsunder, Canio Hoffarth, Subramaniam Rajan, Robert K. Goldberg, Kelly S. Carney, Paul DuBois, Gunther Blankenhorn

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


The focus of this paper is the development of test procedures to characterize the damage-related behavior of a unidirectional composite at room temperature and quasi-static loading conditions and use the resulting data in the damage sub-model of a newly developed material model for orthotropic composites. This material model has three distinct sub-models to handle elastic and inelastic deformations, damage, and failure. A unidirectional composite—T800/F3900 that was the focus of our previous work, is used to illustrate how the deformation and damage-related experimental procedures are developed and used. The implementation of the damage sub-model into LS-DYNA is verified using single-element tests and validated using impact tests. Results show that the implementation yields reasonably accurate predictions of impact behavior involving deformation and damage in structural composites.

Original languageEnglish (US)
Pages (from-to)941-967
Number of pages27
JournalJournal of Composite Materials
Issue number7
StatePublished - Mar 1 2019


  • Orthotropic composite
  • damage characterization tests
  • impact simulation
  • stress–strain curves

ASJC Scopus subject areas

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


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