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Transverse Failure of Unidirectional Composites: Sensitivity to Interfacial Properties
Book chapter

Transverse Failure of Unidirectional Composites: Sensitivity to Interfacial Properties

Scott Zacek, David Brandyberry, Anthony Klepacki, Chris Montgomery, Maryam Shakiba, Michael Rossol, Ahmad Najafi, Xiang Zhang, Nancy Sottos, Philippe Geubelle, …
Integrated Computational Materials Engineering (ICME), pp 329-347
21 Mar 2020
DOI: https://doi.org/10.1007/978-3-030-40562-5_12

Abstract

Carbon-epoxy composites Cohesive model Composite laminate Interface-enriched finite element method Interfacial failure Mesoscale modeling Microstructure reconstruction Nonconforming mesh Sensitivity analysis Transverse cracking
A computational framework is developed to model the transverse failure of fiber-reinforced polymer-matrix composites, with an emphasis on capturing fiber debonding with a cohesive failure model along the fiber/matrix interfaces. We introduce a nonlinear material sensitivity formulation to quantify how variations in the interfacial cohesive zone properties affect the transverse failure response. The analytic sensitivity formulation is implemented in an interface-enriched generalized finite element method (IGFEM) framework that allows for the simulation of transverse failure in a composite layer consisting of hundreds of closely packed fibers discretized with finite element meshes that do not need to conform to the composite microstructure.

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