WEIGHT FUNCTION CALCULATION FOR SURFACE CRACKS USING THE LINE-SPRING MODEL

被引：3

作者：

AKIMKIN, SA

NIKISHKOV, GP

机构：

[1] Moscow Institute of Engineering Physics, Moscow

来源：

INTERNATIONAL JOURNAL OF FRACTURE | 1991年 / 47卷 / 04期

关键词：

D O I：

10.1007/BF00012946

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A numerical method for calculating weight functions for surface cracks in plates and shells is proposed. Thick-shell finite elements are used to create the discrete model of a body with a through-wall flaw. Line-spring elements transform the through-wall flaw into a surface crack. A quadratic line-spring element is presented. Weight functions for some semielliptical surface cracks in a plate have been calculated. The weight functions obtained may be used for computing stress intensity factors related to two-dimensional stress fields at the crack surface.

引用

页码：241 / 256

页数：16

共 15 条

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