Smoothed FE-Meshfree method for solid mechanics problems
Smoothed FE-Meshfree method for solid mechanics problems
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用于固体力学问题的平滑有限元无网格方法
DOI:
10.1007/s00707-018-2124-4
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发表时间:
2018-03
期刊:
影响因子:
2.7
通讯作者:
Zhu Yicheng
中科院分区:
文献类型:
--
作者:
Chen Guangsong;Qian Linfang;Ma Jia;Zhu Yicheng
This paper presents a smoothed FE-Meshfree (SFE-Meshfree) method for solving solid mechanics problems. The system stiffness matrix is calculated via a strain-smoothing technique with the composite shape function, which is based on the partition of unity-based method, combing the classical isoparametric quadrilateral function and radial-polynomial basis function. The corresponding Gauss integration in the element is replaced by line integration along the edges of the smoothing cells, so no derivatives of the composite shape functions are needed during the field gradient estimation process. Several numerical examples including an automobile mechanical component are employed to examine the presented method. Calculation results indicate that SFE-Meshfree can obtain a high convergence rate and accuracy without introducing additional degrees of freedom to the system. In addition, it is also more tolerant with respect to mesh distortion. The volumetric locking problem is also explored in this paper under a selective smoothing integration scheme.
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DOI:
10.1007/978-1-4612-0575-3_12
发表时间:
1998
期刊:
--
影响因子:
--
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DOI:
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