Chapitre D'ouvrage Année : 2005

Dual boundary element analysis of the multiple-cracked body

Résumé

In this paper, a development of the application of the Dual Boundary Element Method (DBEM) to multiple-cracked body has been made. The fundamental principle of the DBEM and its effective numerical implementation to the two-dimensional problem in linear elasticity are presented. When the displacement integral equation is applied on ones of the crack surfaces and the traction integral equation on the others, general plane problem with several mixed-mode cracks can be solved with a single-region formulation. All crack surfaces are discretized with discontinuous quadratic boundary elements. The J-integral technique is used to evaluate the stress intensity factors. Several numerical examples of geometry with some edge and embedded cracks show the high accuracy and efficiency of the present method. Besides, by the present formulation, the interaction of multiple cracks for several structures is studied. Application of present method to fatigue problem of multiple-cracked body is proposed.

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Dates et versions

hal-01007505 , version 1 (10-01-2023)

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Hung Nguyen-Dang, Ai-Min Yan, Nicolas Moës. Dual boundary element analysis of the multiple-cracked body. Boundary element technology IX, pp.235-242, 2005, ⟨10.2495/BT940251⟩. ⟨hal-01007505⟩

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