Implementing deformation, damage, and failure in an orthotropic plastic material model

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

Research output: Contribution to journalArticle

Abstract

Theoretical and implementation details of an orthotropic plasticity model are presented. The model is comprised of three sub-models dealing with elastic and inelastic deformations, damage, and failure. The input to the three sub-models involves tabulated data that can be obtained from laboratory and/or virtual testing. In this article, the focus is on the development of the failure sub-model and its links to the other components. Details of how the user-selected failure criterion is used, and what steps are implemented post-failure are presented. The well-known Puck failure criterion is used in the numerical examples. Three validation tests are used to illustrate the strengths and weaknesses of the failure sub-model—10°, 15°, and 30° off-axis tests, a stacked-ply test carried out at room temperature under quasi-static loading, and finally, a high-speed impact test. Results indicate that while the deformation and damage sub-models give reasonably accurate results, the failure predictions are a huge challenge especially for high-speed impact tests.

Original languageEnglish (US)
JournalJournal of Composite Materials
DOIs
StateAccepted/In press - Jan 1 2019

Keywords

  • failure modeling
  • impact loads
  • Orthotropic composite
  • plasticity

ASJC Scopus subject areas

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

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  • Cite this

    Shyamsunder, L., Khaled, B., Rajan, S. D., Goldberg, R. K., Carney, K. S., DuBois, P., & Blankenhorn, G. (Accepted/In press). Implementing deformation, damage, and failure in an orthotropic plastic material model. Journal of Composite Materials. https://doi.org/10.1177/0021998319865006