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31 December 2020 Numerical modeling of mixed-mode delamination fracture in unidirectional AS4/PEEK composites
Viorel Ionescu
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Proceedings Volume 11718, Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies X; 117180H (2020) https://doi.org/10.1117/12.2570466
Event: Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies 2020, 2020, Online Only
Abstract
In this paper it was developed a Finite Element Method (FEM) model for the simulation of interfacial failure between two plies of an AS4/PEEK composite sample using Cohesive Zone Model (CZM), under the frame work of Comsol Multiphysics software. Mixed Mode Bending (MMB) method was considered here for the numerical implementation of progressive delamination propagating in composite specimens with pre-existing cracks. Volumetric strain and von Mises stress at the maximum load before fracture have been evaluated at here different ratios between mode II strain energy rate and total strain energy rate GII/GT = 20%, 50% and 80%.
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Viorel Ionescu "Numerical modeling of mixed-mode delamination fracture in unidirectional AS4/PEEK composites", Proc. SPIE 11718, Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies X, 117180H (31 December 2020); https://doi.org/10.1117/12.2570466
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KEYWORDS
Composites
Interfaces
Finite element methods
Numerical modeling
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