Development of three-dimensional enriched free mesh method and its application to crack analysis

被引：0
|
作者：
Suzuki H. [1 ]
Matsubara H. [1 ]
Ezawa Y. [1 ]
Yagawa G. [1 ]
机构：
[1] Department of Intelligent Material and Mechatronics Systems, Toyo University, Bunkyo-ku, Tokyo, 112-8611
来源：
Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A | 2010年 / 76卷 / 763期
关键词：
Enriched free mesh method; Finite element method; Fracture mechanics; Free mesh method; Stress intensity factor;
D O I：
10.1299/kikaia.76.296
中图分类号：
学科分类号：
摘要：
In this paper, we describe a method for three-dimensional high accurate analysis of a crack included in a large-scale structure. The Enriched Free Mesh Method (EFMM) is a method for improving the accuracy of the Free Mesh Method (FMM), which is a kind of meshless method. First, we developed an algorithm of the three-dimensional EFMM. The elastic problem was analyzed using the EFMM and we find that its accuracy compares advantageously with the FMM, and the number of CG iterations is smaller. Next, we developed a method for calculating the stress intensity factor by employing the EFMM. The structure with a crack was analyzed using the EFMM, and the stress intensity factor was calculated by the developed method. The analysis results were very well in agreement with reference solution. It was shown that the proposed method is very effective in the analysis of the crack included in a large-scale structure.
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页码：296 / 302
页数：6
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