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Application of displacement and hybrid strees methods to plane notch and crack problems

✍ Scribed by Eckart Schnack; Michael Wolf

Publisher
John Wiley and Sons
Year
1978
Tongue
English
Weight
550 KB
Volume
12
Category
Article
ISSN
0029-5981

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✦ Synopsis

Abstract

For calculating stress concentration factors at plane notches and stress intensity factors at plane cracks a system of finite elements is proposed which uses specially developed triangular hybrid stress elements at the notches and cracks and combines them with triangular elements acording to the displacement method. In formulating the stresses at the notches the Fade‐away Law formulated by Neuber has been taken into consideration; for the cracks, formulations are used which exactly contain the stress distribution of Irwin's equations. The quick convergence and high degree of accuracy of this approach are demonstrated by way of test examples.

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