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Estimating stress intensity factors with singular components of the total finite element solution

✍ Scribed by G. H. Staab

Publisher
John Wiley and Sons
Year
1982
Tongue
English
Weight
599 KB
Volume
18
Category
Article
ISSN
0029-5981

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✦ Synopsis

Abstract

Displacement formulated singular elements are compared to isoparametric quarter‐node elements. The total stress and displacement solution for each element is decomposed into singular and regular components for evaluating stress intensity factors. Specific relationships between nodal displacements and the singular component of stress are presented for the isoparametric element at selected locations within the element. Numerical results for K~I~ and K~II~ in the slant crack problem are presented. The singular components are shown to produce superior results when considering crack opening displacements.

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