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A Kriging Surrogate Model for Uncertainty Analysis of Graphene Based on a Finite Element Method

机译:基于有限元方法的石墨烯不确定度分析的Kriging替代模型

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摘要

Due to the inevitable presence of random defects, unpredictable grain boundaries in macroscopic samples, stress concentration at clamping points, and unknown load distribution in the investigation of graphene sheets, uncertainties are crucial and challenging issues that require more exploration. The application of the Kriging surrogate model in vibration analysis of graphene sheets is proposed in this study. The Latin hypercube sampling method effectively propagates the uncertainties in geometrical and material properties of the finite element model. The accuracy and convergence of the Kriging surrogate model are confirmed by a comparison with the reported references. The uncertainty analysis for both Zigzag and Armchair graphene sheets are compared and discussed.
机译:由于不可避免存在随机缺陷,宏观样品中不可预测的晶界,夹紧点处的应力集中以及石墨烯片的研究中未知的载荷分布,不确定性是至关重要的且具有挑战性的问题,需要更多的探索。提出了克里格代理模型在石墨烯片振动分析中的应用。拉丁超立方体采样方法有效地传播了有限元模型的几何和材料属性中的不确定性。通过与已报道的参考文献进行比较,可以确定克里格代理模型的准确性和收敛性。比较和讨论了锯齿形和扶手椅形石墨烯片的不确定性分析。

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