Multiscale progressive damage analyses for fiber reinforced composites subjected to biaxial loading

Eyass Massarwa, Ido Meshi, Jacob Aboudi, Rami Haj-Ali

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

A multiscale integrated Finite-Element (FE) and High Fidelity Generalized Method of Cells (HFGMC) micromechanics modeling analysis is proposed to generate failure envelopes for both unidirectional and multidirectional carbon/epoxy composite laminates subjected to biaxial loading conditions. The proposed modeling approach is implemented as a user material subroutine (UMAT) within displacement-based layered FE models, whereby each layer (lamina) is represented by a hexagonal repeating unit-cell (RUC) recognizing the fiber and matrix phases of a lamina at the microstructure. The fiber is considered to behave as an elastic transversely isotropic material. The nonlinear elastic behavior along with the J2-deformation plasticity are used to account for matrix nonlinearity. Failure of a lamina is determined by using both strain-based and stress-based failure theories. The lamina stress and stiffness contributions are eliminated from the FE model in case of a failure. The in-situ mechanical properties and damage parameters of the RUC are determined by calibration using available axial, transverse, and shear experimental responses. The efficiency of the proposed multiscale analysis is demonstrated by a comparison with measured failure envelopes available in the literature.

Original languageEnglish
Title of host publication33rd Technical Conference of the American Society for Composites 2018
PublisherDEStech Publications Inc.
Pages1515-1527
Number of pages13
ISBN (Electronic)9781510872073
StatePublished - 2018
Event33rd Technical Conference of the American Society for Composites 2018 - Seattle, United States
Duration: 24 Sep 201827 Sep 2018

Publication series

Name33rd Technical Conference of the American Society for Composites 2018
Volume3

Conference

Conference33rd Technical Conference of the American Society for Composites 2018
Country/TerritoryUnited States
CitySeattle
Period24/09/1827/09/18

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