Stress concentration in a finite functionally graded material plate
Stress concentration in a finite functionally graded material plate
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有限功能梯度材料板中的应力集中
DOI：
10.1007/s11433-012-4774-x
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发表时间：
2012-07-01
影响因子：
6.4
通讯作者：
Chen WenTao
中科院分区：
文献类型：
--
作者：
Yang QuanQuan;Gao CunFa;Chen WenTao
本文研究了带圆孔的有限功能梯度材料（FGM）板在任意恒定载荷作用下的二维应力分布。采用分段均匀层法，结合最小二乘边界配置技术，对具有径向任意弹性特性的有限FGM板进行了应力分析。给出了不同加载条件、不同材料性能和不同板尺寸下孔周围应力分布的数值结果。结果表明，与无限大板相比，有限板的应力集中普遍增强，但通过选择适当的径向弹性模量变化方式可以显著降低应力集中。
This paper is to study the two-dimensional stress distribution of a finite functionally graded material (FGM) plate with a circular hole under arbitrary constant loads. Using the method of piece-wise homogeneous layers, the stress analysis of the finite FGM plate having radial arbitrary elastic properties is made based on the complex variable method combined with the least square boundary collocation technique. Numerical results of stress distribution around the hole are then presented for different loading conditions, different material properties and different plate sizes, respectively. It is shown that the stress concentration in the finite plate is generally enhanced compared with the case of an infinite plate, but it can be significantly reduced by choosing proper change ways of the radial elastic modulus.