Multiscale failure analysis for prediction of matrix crack formation in polymer-matrix composites

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The matrix phase of fiber-reinforced polymer-matrix composites typically exhibits nonlinear viscoelastic/viscoplastic behavior with damage evolution. For the structural safety evaluation, these polymer characteristics should be appropriately modeled to predict crack initiation on the fiber-diameter scale accurately. In this study, the matrix modeling effect on multiscale prediction of nonlinear response and crack initiation was investigated using a multiscale approach that consists of two finite-element analysis on different length scale. On the macroscopic scale, laminate-scale finite-element analysis assuming to be a homogeneous orthotropic lamina was conducted to obtain strain histories at failure-expected points. On the microscopic scale, periodic unit-cell (PUC) analysis considering heterogeneous material structure was performed to predict crack initiation in the matrix phase of composite laminates, based on strain histories obtained from a macroscopic laminate analysis. Two constitutive models and four sets of failure criteria were applied to the matrix phase of the unit cell for PUC analysis, and compared with each other to evaluate important factors in multiscale prediction of polymer-matrix composites.

Original languageEnglish
Title of host publication33rd Technical Conference of the American Society for Composites 2018
PublisherDEStech Publications Inc.
Pages614-625
Number of pages12
ISBN (Electronic)9781510872073
Publication statusPublished - 2018 Jan 1
Event33rd Technical Conference of the American Society for Composites 2018 - Seattle, United States
Duration: 2018 Sep 242018 Sep 27

Publication series

Name33rd Technical Conference of the American Society for Composites 2018
Volume1

Other

Other33rd Technical Conference of the American Society for Composites 2018
CountryUnited States
CitySeattle
Period18/9/2418/9/27

ASJC Scopus subject areas

  • Mechanics of Materials
  • Surfaces, Coatings and Films
  • Metals and Alloys

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