Multiscale sensitivity analysis of failure in composite materials using an interface-enriched generalized FEM

David Brandyberry, Philippe Geubelle

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

Abstract

A computational framework is developed to model the failure of composite materials with complex interphase boundaries. The problem of interest in the present study pertains to the transverse failure of fiber-reinforced composites with an emphasis on capturing the debonding of the fiber-matrix interfaces using a cohesive zone model (CZM). The Interface-Enriched Generalized Finite Element Method (IGFEM) is used to model efficiently the geometrical features of the microstructure obtained from reconstructed images of actual composite samples using meshes that do not conform to the microstructure. For cases where fibers are closely packed, a two-interface element is presented, which allows a single finite element to contain multiple cohesive surfaces. We introduce a nonlinear material sensitivity formulation to quantify how variations in the interfacial cohesive zone properties affect the evolution of the transverse stressstrain response.

Original languageEnglish (US)
Title of host publication32nd Technical Conference of the American Society for Composites 2017
EditorsWenbin Yu, R. Byron Pipes, Johnathan Goodsell
PublisherDEStech Publications Inc.
Pages1044-1056
Number of pages13
ISBN (Electronic)9781510853065
StatePublished - 2017
Event32nd Technical Conference of the American Society for Composites 2017 - West Lafayette, United States
Duration: Oct 23 2017Oct 25 2017

Publication series

Name32nd Technical Conference of the American Society for Composites 2017
Volume2

Other

Other32nd Technical Conference of the American Society for Composites 2017
Country/TerritoryUnited States
CityWest Lafayette
Period10/23/1710/25/17

ASJC Scopus subject areas

  • Ceramics and Composites

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