材料科学
复合材料
断裂韧性
有限元法
复合材料层合板
韧性
分层(地质)
桥接(联网)
断裂力学
内聚力模型
复合数
结构工程
计算机科学
俯冲
构造学
生物
工程类
古生物学
计算机网络
作者
Qiwen Ma,Yonggui Zhang,Jianhui Liu
标识
DOI:10.1177/07316844221105284
摘要
Multidirectional laminates are more widely used in practical engineering, and their fiber bridging characteristics are more obvious than unidirectional laminates. Due to the deficiency of research on the relationship between interface angle and interlaminar fracture toughness of multidirectional laminates, the numerical model of interface mode I fracture toughness of multidirectional laminates related to interface angle is modified by analyzing the difference between steady-state fracture toughness and initial fracture toughness of each interface. Meanwhile, the mode I interlaminar fracture toughness of multidirectional composite laminates under five interface modes is studied. Based on the finite element software, the cohesion model is established and verified. The analytical results are in good agreement with the experimental data, and the modified model can better verify the relationship between interface angle and interlaminar fracture toughness. At the same time, the fiber bridge force in the process of delamination along different interfaces is calculated, which provides a basis for the modified model.
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