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Fracture mechanics analysis of anisotropic plates by the boundary element method

✍ Scribed by P. Sollero; M. H. Aliabadi

Publisher
Springer Netherlands
Year
1993
Tongue
English
Weight
670 KB
Volume
64
Category
Article
ISSN
1573-2673

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✦ Synopsis

This paper presents an analysis of mixed mode fracture mechanics problems arising in anisotropic composite laminates. The boundary element method (BEM) and the Jk integral are presented as accurate techniques to compute the stress intensity factors K~ and Kn of two dimensional anisotropic bodies. Using function of a complex variable a decoupling procedure is derived to obtain the stress intensity factors. The procedure is based on the computation of the Jl-integral and of the ratio of relative displacements at the crack faces, near the crack tip. Applications are presented for unidirectional and symmetric laminates of glass, boron and graphite-epoxy materials. Numerical examples of problems of pure mode I and mixed mode deformations are given, in order to demonstrate the accuracy of the method.

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