Determination of sharp V-notch stress intensity factors using the extended finite element method

被引：22
|
作者：
Yu, Tiantang [1 ]
Shi, Luyang [1 ]
机构：
[1] Hohai Univ, Dept Engn Mech, Nanjing 210098, Peoples R China
来源：
JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN | 2012年 / 47卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Sharp V-notch; extended finite element method; stress intensity factors; least-squares method; POST-PROCESSING APPROACH; LEAST-SQUARES METHOD; FRACTURE-MECHANICS; INTERFACE CORNERS; CRACK-GROWTH; TENSION; COMPUTATION; SIMULATION; ENRICHMENT; FIELDS;
D O I：
10.1177/0309324711433981
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
An extended finite element method scheme for sharp V-notches is developed. The method allows the representation of notch faces independent of the mesh. This is achieved by enriching the finite element approximation of the nodes surrounding the notch tip with the first term of the notch tip asymptotic field and the nodes that intersect the notch faces with a jump enrichment function using a partition of unity method. The least-squares method is used to evaluate the stress intensity factors of sharp V-notches. Numerical simulations demonstrate the accuracy and the robustness of the proposed technique.
引用
收藏
页码：95 / 103
页数：9
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