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Calculation of stress intensity factors in three dimensions by finite element methods

✍ Scribed by W. S. Blackburn; T. K. Hellen

Publisher
John Wiley and Sons
Year
1977
Tongue
English
Weight
984 KB
Volume
11
Category
Article
ISSN
0029-5981

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✦ Synopsis

Abstract

Finite element methods are used to calculate the stress intensity factors for three‐dimensional geometries containing a number of depths of crack subjected to various loads. Special elements are used at the tip to represent the variation of the displacement with respect to the square root of the distance from the tip. The stress intensity factors are determined by comparison of the displacements in the special elements, by a method of virtual crack extensions, and, in one case, by an integral around the tip. With meshes containing between 50 and 100 quadratic isoparametric elements, results accurate to within 1 per cent or 4 per cent (depending on case) of known solutions are demonstrated.

πŸ“œ SIMILAR VOLUMES

Stress intensity factor analysis by comb
Stress intensity factor analysis by combination of boundary element and finite element methods
✍ N. Miyazaki; T. Ikeda; T. Munakata πŸ“‚ Article πŸ“… 1990 πŸ› Elsevier Science 🌐 English βš– 839 KB

In the present paper, a combination of the boundary element method is proposed for calculating the stress intensity factors of two-dimensional crack problems including mixed mode ones. In this method, finite elements are only allocated around a crack tip and boundary elements are used to discretize