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首页> 外文期刊>Mechanika >FEM Modeling of Delamination in AS4/PEEK Thermoplastic Composites under Mixed – Mode Bending Test
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FEM Modeling of Delamination in AS4/PEEK Thermoplastic Composites under Mixed – Mode Bending Test

机译:混合模式弯曲试验下AS4 / PEEK热塑性复合材料中分层分层的有限元模拟

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摘要

Interfacial failure by delamination in the unidirectional AS4/PEEK laminated composite was simulated through this paper with a finite element method (FEM) based model developed with Comsol Multiphysics software. The mixed – mode bending (MMB) test was investigated numerically here after a successful validation of the model by comparing with experimental measurements of the load –displacement curve provided in the literature. The maximum delamination length of the specimens modeled, the corresponding von Mises stress distributions and the damage evolution function have been evaluated for different ratios between mode II strain energy rate and total strain energy rate GII/GT = 20%, 50% and 80%.
机译:通过使用COMSOL多体软件开发的有限元方法(FEM)模拟了单向AS4 / PEEK层压复合材料中的分层界面故障。通过比较文献中提供的负载平移曲线的实验测量,在此之后在此处进行了数量地研究了混合模式弯曲(MMB)测试。模拟样本的最大分层长度,相应的von误析应力分布和损伤演化功能已经在模式II株能量率和总应变能量率GII / gt = 20%,50%和80%之间进行了不同的比率。

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