【摘要】 论文采用内聚力模型,对纤维/金属层合板(FMLs)在低速冲击载荷作用下抗分层性能进行研究.内聚力模型对裂纹的模拟具有它独特的优势:一是该模型不需要预先假设初始缺陷;二是在计算过程中随着裂纹的扩展,该方法不需要重新对结构进行网格划分.借助该模型,论文对低速冲击载荷作用下,纤维层合板(FRP)分层进行了模拟,并验证了该模型计算的有效性.在此基础上,论文研究了低速冲击载荷作用下,不同金属含量的纤维/金属层合板抗分层性能,并与纤维层合板进行了比较.最后从能量的角度讨论了金属含量与铺层结构对FMLs低速冲击性能的影响.更多还原

【Abstract】 The delamination of fiber-metal laminates(FMLs) under low-velocity impact is studied by employing the cohesive zone model.To validate the cohesive zone model in dealing with delamination of composite laminates,the delamination simulation is executed under the low-velocity impact and a relative good agreement with experimental data is achieved.Then,the delamination of FMLs with different metal ratios under low-velocity impact is computationally investigated and the results are compared with that of composite laminates.Finally,the effects of the lay-up and the content ratio of metal to the fiber on the delamination of fiber/metal laminates are studied from the viewpoint of the energy conservation.更多还原