Experimental 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

16 Scopus citations


Test procedures for characterizing the orthotropic behavior of a unidirectional composite at room temperature and quasi-static loading conditions are developed and discussed. The resulting data consisting of 12 stress–strain curves and associated material parameters are used in a newly developed material model—an orthotropic elasto-plastic constitutive model that is driven by tabulated stress–strain curves and other material properties that allow for the elastic and inelastic deformation model to be combined with damage and failure models. A unidirectional composite—T800/F3900, commonly used in the aerospace industry, is used to illustrate how the experimental procedures are developed and used. The generated data are then used to model a dynamic impact test. Results show that the developed framework implemented into a special version of LS-DYNA yields reasonably accurate predictions of the structural behavior.

Original languageEnglish (US)
JournalJournal of Composite Materials
StateAccepted/In press - Jan 1 2017


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

ASJC Scopus subject areas

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


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