Staggered cell-vertex finite volume method for analyzing stress in heterogeneous composite materials

被引：0
作者：
Xuan, Lingkuan [1 ]
Gong, Jingfeng [1 ]
Zhang, Wenping [1 ]
Ming, Pingjian [1 ]
机构：
[1] College of Power and Energy Engineering, Harbin Engineering University
来源：
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2014年 / 48卷 / 03期
关键词：
Finite volume method; Functionally graded material; Heterogeneous composite material; Laminated material; Staggered grid technique;
D O I：
10.7652/xjtuxb201403022
中图分类号：
学科分类号：
摘要：
A staggered cell-vertex finite volume method (SCV-FVM) is developed for stress analysis in heterogeneous composite materials. The linear elastic equilibrium equation is discretized based on unstructured grids. The staggered grid technique is adopted to introduce the material variation into the discretization, so it is unnecessary to treat the material interfaces explicitly. SCV-FVM is taken to simulate the elastic fields of macrostructures and the results agree well with the analytical ones. Comparisons between different numerical results show that SCV-FVM is able to avoid numerical oscillation of the stress along traction direction, however it is hard for SCV-FVM to capture the stress jump vertical to the traction direction, which can be improved by refining the mesh around the material interface. The elastic performance of multi-layer composites with microstructures is discussed via SCV-FVM, and the numerical discontinuity and stress concentration due to variation of physical parameters do not appear in the predicted results, which demonstrates the feasibility of SCV-FVM for stress analysis of heterogeneous composite materials.
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页码：121 / 127
页数：6
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