Response and damage propagation of polymer-matrix fibre-reinforced composites: Predictions for WWFE-III Part A
Response and damage propagation of polymer-matrix fibre-reinforced composites: Predictions for WWFE-III Part A
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DOI：
10.1177/0021998313476972
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发表时间：
2013-03
影响因子：
2.9
通讯作者：
S. Pinho;G. Vyas;P. Robinson
中科院分区：
文献类型：
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作者：
S. Pinho;G. Vyas;P. Robinson
本文展示了作者对第三次全球失败演习的13个具有挑战性的测试案例的预测。这些案例包括预测层合板双轴应力-应变曲线、单轴载荷下各种正交铺层和准各向同性层合板中的基体开裂和分层、层合板热膨胀系数随基体开裂的变化、一般层合板的弯曲、含开孔的各种薄和厚层合板的加载-卸载行为和强度。层压板由各种玻璃和碳纤维/环氧树脂材料制成。本构模型是基于塑性理论，包括静水压力的影响，并占多轴载荷组合效应。失效标准区分基体失效、纤维扭结和纤维拉伸失效。原位强度用于基体失效。失效的传播考虑了与每种失效模式相关的断裂能，对于基体失效，考虑了层片中裂纹的累积。该模型被用来对第三次全球故障演习的所有测试案例进行盲预测。
This paper showcases the authors’ predictions for the 13 challenging test cases of the third World Wide Failure Exercise. The cases involve the prediction of lamina biaxial stress–strain curves, matrix cracking and delamination in various cross-ply and quasi-isotropic laminates under uniaxial loading, variation of thermal expansion coefficient of a laminate with matrix cracking, bending of a general laminate, loading-unloading behaviour and the strength of various thin and thick laminates containing an open hole. The laminates were made of various glass and carbon fibre/epoxy materials. The constitutive model is based on plasticity theory, includes hydrostatic pressure effects and accounts for multiaxial load combination effects. The failure criteria distinguish between matrix failure, fibre kinking and fibre tensile failure. In-situ strengths are used for matrix failure. Propagation of failure takes into consideration the fracture energy associated with each failure mode and, for matrix failure, the accumulation of cracks in the plies. The model is used to make blind predictions of all test cases from the third World-Wide Failure Exercise.