Characterization of tensile damage and strength in GFRP cross-ply laminates
Characterization of tensile damage and strength in GFRP cross-ply laminates
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DOI：
10.1016/j.msea.2004.05.060
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发表时间：
2004-10-15
期刊：
影响因子：
6.4
通讯作者：
Takeda, N
中科院分区：
文献类型：
--
作者：
Okabe, T;Sekine, H;Takeda, N
对玻璃纤维增强塑料(GFRP)正交层合板的拉伸损伤过程和强度进行了实验和数值研究。用视频显微镜进行了详细的观察，以了解90度铺层的破坏过程。试验结果表明，强度可以从0度铺层的强度近似估计出来，而与90度铺层的厚度无关。基于这些实验结果，我们提出了一种新的蒙特卡罗模拟方法来预测正交铺设层合板的损伤过程和强度。横向裂纹用粘结单元表示，同时考虑了90度铺层的局部强度和断裂韧性。因此，该模拟可以表达实验中观察到的应力应变关系、裂纹发展过程以及一些特征现象，如约束效应和不完全横向裂纹。(C)2004爱思唯尔B.V.保留所有权利。
This paper investigates the tensile damage process and strength in glass fiber reinforced plastics (GFRP) cross-ply laminates experimentally and numerically. Detailed observations are conducted with a video microscope to comprehend the damage process in the 90degrees ply. Experimental results indicate that the strength can be approximately estimated from the strength of the 0degrees ply, independent of the thickness of the 90degrees ply. Based on these experimental results, we propose a new Monte-Carlo simulation for predicting the damage process and strength in cross-ply laminates. The transverse cracks are expressed by utilizing the cohesive elements, considering both local strength and fracture toughness of the 90degrees ply. Consequently, the stress-strain relationship, the crack progress, and some characteristic phenomena, such as the constrained effect and incomplete transverse cracks, observed in the experiments can be expressed with this simulation. (C) 2004 Elsevier B.V. All rights reserved.