Improving accuracy and efficiency of stress analysis using scaled boundary finite elements

被引：6
|
作者：
Lin, Gao [1 ]
Pang, Lin [1 ]
Hu, Zhiqiang [1 ]
Zhang, Yong [2 ]
机构：
[1] Dalian Univ Technol, Fac Infrastruct Engn, Dalian 116024, Peoples R China
[2] Chinese Acad Sci, Inst Nucl Energy Safety Technol, Hefei 230031, Peoples R China
来源：
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS | 2016年 / 67卷
基金：
中国国家自然科学基金;
关键词：
Stress analysis; SBFEM; NURBS; Polygon elements; Stress concentration; Refinement; ISOGEOMETRIC ANALYSIS; NURBS; GEOMETRY; CAD;
D O I：
10.1016/j.enganabound.2016.03.008
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The scaled boundary finite element method (SBFEM) is a fundamental-solution-less boundary element method, which leads to semi-analytical solutions for stress fields. As only the boundary is discretized, the spatial dimension is reduced by one. In this paper, the SBFEM based polygon elements are utilized to improve the accuracy and efficiency of stress analysis. It retains the attractive feature of the SBFEM in solving problems with unbounded media and singularities. In addition, polygon elements are more flexible in meshing and mesh transition. Various measures which help improving accuracy or efficiency of the stress analysis, i.e. refining polygon mesh, nodal enrichment, appropriate placing of the scaling center, merging polygon elements and NURBS enhanced curved boundaries are discussed and compared. As a result, further insight into the refinement and improvement strategies for stress analysis is provided. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：26 / 42
页数：17
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