Numerical simulation of interlaminar damage propagation in CFRP cross-ply laminates under transverse loading
Numerical simulation of interlaminar damage propagation in CFRP cross-ply laminates under transverse loading
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DOI：
10.1016/j.ijsolstr.2006.09.007
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发表时间：
2007-05
影响因子：
3.6
通讯作者：
M. Nishikawa;T. Okabe;N. Takeda
中科院分区：
文献类型：
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作者：
M. Nishikawa;T. Okabe;N. Takeda
本文采用有限元方法对横向荷载作用下FRP复合材料层间损伤扩展进行了数值模拟。首先，我们对CFRP交叉层合板进行了落锤冲击试验。在最低层的中心产生层裂，然后在90/0层界面处形成蝴蝶状层间分层。基于这些实验观察，我们提出了一个层间损伤传播的数值模拟，使用一个内聚区模型来解决基于能量的损伤传播准则。该仿真通过在损伤过程区域附近定位精细网格，可以高精度地解决层间分层问题，同时使用自动网格生成保持计算效率。层间分层的模拟结果与实验结果吻合较好。此外，我们还证明了该方法降低了仿真的计算成本。
This paper proposes a numerical simulation of interlaminar damage propagation in FRP laminates under transverse loading, using the finite element method. First, we conducted drop-weight impact tests on CFRP cross-ply laminates. A ply crack was generated at the center of the lowermost ply, and then a butterfly-shaped interlaminar delamination was propagated at the 90/0 ply interface. Based on these experimental observations, we present a numerical simulation of interlaminar damage propagation, using a cohesive zone model to address the energy-based criterion for damage propagation. This simulation can address the interlaminar delamination with high accuracy by locating a fine mesh near the damage process zone, while maintaining computational efficiency with the use of automatic mesh generation. The simulated results of interlaminar delamination agreed well with the experiment results. Moreover, we demonstrated that the proposed method reduces the computational cost of the simulation.