Numerical modeling of progressive damage in fiber reinforced plastic cross-ply laminates
Numerical modeling of progressive damage in fiber reinforced plastic cross-ply laminates
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DOI：
10.1016/j.compscitech.2008.04.021
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发表时间：
2008-08
影响因子：
9.1
通讯作者：
T. Okabe;M. Nishikawa;N. Takeda
中科院分区：
文献类型：
--
作者：
T. Okabe;M. Nishikawa;N. Takeda
本文建立了正交层板渐进损伤的数值模型，横向裂纹、层间分层和纤维断裂）。在该模型中，嵌入过程区（EPZ）模型用于横向裂纹和层间脱层;桁架单元用于表示纤维断裂。首先，我们描述了该模型的制定和算法。其次，计算了CFRP [0/90]层合板的横向开裂应力，并与Boniface等人的试验结果进行了比较，验证了本文模型能够较好地模拟90° ~ 0°任意厚度层合板的横向开裂应力。最后，将该模型应用于GFRP [90/0]砰击试验。模拟结果很好地再现了GFRP [90/0]砰击中复杂的渐进损伤过程。
A numerical model of the progressive damage in cross-ply laminates (e.g., transverse cracks, interlaminar delaminations, and fiber breaks) is proposed. In this model, the embedded process zone (EPZ) model is used for the transverse cracks and interlaminar delaminations; the truss elements are used to express the fiber breaks. First, we describe the formulation and algorithm of this model. Second, we calculate the transverse cracking stress in CFRP [0/90]slaminates and compare it with the experiments by Boniface et al. The comparison validates that our model can appropriately simulate the onset and accumulation of transverse cracks for an arbitrary thickness of the 90° ply to the 0° ply with a set of parameters. Finally, this model is applied to our experiments for GFRP [90/0]slaminates. The simulated results reproduce the complicated progressive damage in GFRP [90/0]slaminates very well.