Numerical EIM with 3D FFT for the contact with a smooth or rough surface involving complicated and distributed inhomogeneities

Numerical EIM with 3D FFT for the contact with a smooth or rough surface involving complicated and distributed inhomogeneities
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采用 3D FFT 的数值 EIM,用于与涉及复杂分布不均匀性的光滑或粗糙表面接触

DOI:
10.1016/j.triboint.2015.09.001
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发表时间:
2016
影响因子:
6.2
通讯作者:
Wang Jiaxu
Wang Jiaxu
中科院分区:
工程技术1区
文献类型:
--
作者:
Zhou Qinghua;Jin Xiaoqing;Wang Zhanjiang;Wang Jiaxu

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基于数值等效包含法,提出了一种求解任意形状、不同材料性质分布不均匀的光滑表面和粗糙表面接触问题的数值方法。该算法结合了全三维FFT技术和网格微分加密技术,提高了求解效率和灵活性。通过与有限元方法和简化方法的对比研究,证明了该方法的有效性和准确性。通过对几个非均匀接触算例的计算,验证了该方法在求解含分布非均匀材料的复杂粗糙表面接触问题的能力。
This paper presents a numerical solution approach of solving smooth- and rough-surface contact problems involving distributed inhomogeneities with arbitrary shapes and different material properties, based on the numerical equivalent inclusion method (EIM). Full 3D FFT techniques and a mesh differential refinement scheme are incorporated into the proposed solution method to enhance the efficiency and flexibility. Comparative studies referencing the FEM and a simplified method demonstrate the efficiency and accuracy of the present method. Computations of several heterogeneous contact cases verify the capability of the method in solving complicated and rough-surface contact problems involving materials with distributed inhomogeneities.
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