Damage Modeling of Composites Laminate Containing Stress Concentrations

Hamza El idrissi, A. Seddouki
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引用次数: 3

Abstract

The purpose of this work is to evaluate the failure of an open-hole composite laminate subjected to tensile loading, including both initial damage and damage propagation, using failure criteria and progressive damage models. In order to accurately capture the effect of different specimen sizes on the failure load and failure mode of the AS4/PEEK composite laminate, a user material subroutine (UMAT) based on the failure criteria and washer coupling update method was implemented in Abaqus. In addition, a mesh dependency study of the present model was performed using different meshes. a comparison was made with the present model, the integrated Abaqus model and those available in the literature. The experimental results and numerical predictions were found to be in strong agreement.
含应力集中的复合材料层合板损伤建模
本工作的目的是利用失效准则和渐进损伤模型,评估受拉伸载荷影响的开孔复合材料层合板的失效,包括初始损伤和损伤扩展。为了准确捕捉不同试样尺寸对AS4/PEEK复合材料层合板失效载荷和失效模式的影响,在Abaqus中实现了基于失效准则和垫圈耦合更新方法的用户材料子程序(UMAT)。此外,使用不同的网格对模型进行了网格依赖性研究。并与本模型、综合Abaqus模型和文献中已有的模型进行了比较。实验结果与数值预测结果非常吻合。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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