Effect of modelling of traction and thermal singularities on accuracy of SIFS computation through modified crack closure integral in BEM

被引：15

作者：

Mukhopadhyay, NK

Maiti, SK ^{[1
]}

Kakodkar, A

机构：

[1] Indian Inst Technol, Dept Mech Engn, Bombay 400076, Maharashtra, India

[2] Bhabha Atom Res Ctr, Reactor Design & Dev Grp, Bombay 400085, Maharashtra, India

来源：

ENGINEERING FRACTURE MECHANICS | 1999年 / 64卷 / 02期

关键词：

traction singularity; heat flux singularity; mechanical loading on crack; thermal loading on crack; modified crack closure integral; stress intensity factor; boundary element method; Gaussian quadrature; accuracy of SIF computation;

D O I：

10.1016/S0013-7944(99)00069-7

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The effect of simultaneous modelling of both strain and traction singularities, and temperature derivative and heat flux singularities at the crack rip, on the accuracy of computation of stress intensity factors (SIFs) based on the modified crack closure integral in boundary element method is presented. Simple relations are given for SIF calculations. Results on mode I, mode II and mixed mode, crack subjected to mechanical and/or thermal loading are studied to illustrate the difference between partial and total modelling of the singularities. The dependence of accuracy of the SIFs on the crack tip element size is examined. The effect of order of Gaussian quadrature on the accuracy is also reported. (C) 1999 Elsevier Science Ltd. All rights reserved,

引用

页码：141 / 159

页数：19

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