Numerical modelling and simulation of fatigue damage in carbon fibre reinforced plastics at different stress ratios
Numerical modelling and simulation of fatigue damage in carbon fibre reinforced plastics at different stress ratios
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DOI：
10.1016/j.tws.2019.03.005
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发表时间：
2019-06
影响因子：
6.4
通讯作者：
M. Brod;G. Just;A. Dean;E. Jansen;I. Koch;R. Rolfes;M. Gude
中科院分区：
文献类型：
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作者：
M. Brod;G. Just;A. Dean;E. Jansen;I. Koch;R. Rolfes;M. Gude
对单向碳纤维增强塑料（CFRP）层合板在不同应力比下的损伤行为进行了数值研究。该研究是使用商业有限元软件ABAQUS采用层为基础的疲劳损伤模型（FDM），能够考虑典型的疲劳现象，如应力重分布和负载序列的影响。提供了FDM模型的描述。首先，根据实验结果对模型进行了标定。其次，利用实际试验数据绘制了不同应力比下的S-N曲线，得到了恒定疲劳寿命（CFL）图。最后，预测了CFRP层合板在准静态和循环加载条件下的不同损伤行为。数值结果进行了讨论，并与实验数据进行了比较。实验结果表明了标定后的有限差分法的适用性和准确性。
A numerical study of damage behaviour in unidirectional Carbon Fibre Reinforced Plastics (CFRP) laminates at different stress ratios is self implemented. The study is conducted using the commercial finite element software ABAQUS employing a layer-based fatigue damage model (FDM) that is capable to regard typical fatigue phenomena like stress redistributions and load sequence effects. A description of the FDM model is provided. At first, the model is calibrated according to experimental findings. Next, a constant fatigue life (CFL) diagram is constructed using actual test data to generateS-Ncurves for different stress ratios. Finally, different damage behaviour in CFRP laminates is predicted under quasi-static and cyclic loading conditions. The numerical results are discussed and compared to experimental data. The results obtained show the applicability and accuracy of the calibrated FDM.