Cohesive parametric high-fidelity-generalized-method-of-cells micromechanical model

Ido Meshi, Uri Breiman, Jacob Aboudi, Rami Haj-Ali

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

Abstract

The Parametric High-Fidelity-Generalized-Method-of-Cells (PHFGMC) micromechanical model is extended to include refined local cohesive formulation for simulating weak discontinuities in multiphase composites. The nonlinear parametric HFGMC governing equations are obtained from a two-layered (local-global) virtual work principle and solved using a new incremental-iterative formulation. This offers computational efficiency over previously published work on HFGMC since the system of equations is symmetric. In addition, this formulation enables implementing advanced traction-separation laws available in the literature and allows maintaining the symmetric matrix structure for computational efficiency. Two cohesive zone models were integrated with the PHFGMC with unique nonlinear formulation. These were the non-potential model proposed by Camanho and Davila (CD) and the potential based PPR model. This paper presents the newly verified modeling approach with the new cohesive capabilities. New PHFGMC-Cohesive results are shown to be in good agreement with those from a finite element analysis for various configurations and loading patterns. Progressive damage in composites using the PHFGMC-Cohesive model is also demonstrated.

Original languageEnglish
Title of host publicationProceedings of the American Society for Composites - 34th Technical Conference, ASC 2019
EditorsKyriaki Kalaitzidou
PublisherDEStech Publications
ISBN (Electronic)9781605956022
DOIs
StatePublished - 2019
Event34th Technical Conference of the American Society for Composites, ASC 2019 - Atlanta, United States
Duration: 23 Sep 201925 Sep 2019

Publication series

NameProceedings of the American Society for Composites - 34th Technical Conference, ASC 2019

Conference

Conference34th Technical Conference of the American Society for Composites, ASC 2019
Country/TerritoryUnited States
CityAtlanta
Period23/09/1925/09/19

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