Micromechanics-based constitutive modeling for unidirectional laminated composites

Z. Liang, H. K. Lee, W. Suaris

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

A micromechanics-based constitutive model is developed to predict the effective mechanical behavior of unidirectional laminated composites. A newly developed Eshelby's tensor for an infinite circular cylindrical inclusion [Cheng, Z.Q., Batra, R.C., 1999. Exact Eshelby tensor for a dynamic circular cylindrical inclusion. J. Appl. Mech. 66, 563-565] is adopted to model the unidirectional fibers and is incorporated into the micromechanical framework. The progressive loss of strength resulting from the partial fiber debonding and the nucleation of microcracks is incorporated into the constitutive model. To validate the proposed model, the predicted effective stiffness of transversely isotropic composites under far field loading conditions is compared with analytical solutions. The constitutive model incorporating the damage models is then implemented into a finite element code to numerically characterize the elastic behavior of laminated composites. Finally, the present predictions on the stress-strain behavior of laminated composite plate containing an open hole is compared with experimental data to verify the predictive capability of the model.

Original languageEnglish (US)
Pages (from-to)5674-5689
Number of pages16
JournalInternational Journal of Solids and Structures
Volume43
Issue number18-19
DOIs
StatePublished - Sep 2006

Keywords

  • Damage modeling
  • Finite element implementation
  • Micromechanics
  • Stiffness transformation
  • Unidirectional laminated composites

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials

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