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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 19
DEVELOPMENTS IN COMPUTATIONAL ENGINEERING MECHANICS
Edited by: B.H.V. Topping
Paper XI.1

Analysis of Crack Propagation Path in Two-Dimensional Bodies using the Finite Element Method

A.A. Aaghaakouchak and J.V. Amiri

Department of Civil Engineering, School of Engineering, Tarbiat Modarres University, Tehran, Iran

Full Bibliographic Reference for this paper
A.A. Aaghaakouchak, J.V. Amiri, "Analysis of Crack Propagation Path in Two-Dimensional Bodies using the Finite Element Method", in B.H.V. Topping, (Editor), "Developments in Computational Engineering Mechanics", Civil-Comp Press, Edinburgh, UK, pp 285-290, 1993. doi:10.4203/ccp.19.11.1
Abstract
The paper presents a method for analysis of crack propagation path in homogeneous two dimensional bodies using linear elastic fracture mechanics and finite element methods. Initially stress analysis of the cracked body is carried out using the crack tip element and the stress field in the vicinity of crack tip and the stress intensity factors are determined. In the next step the crack extension angles are calculated based on the minimum strain energy density criterion and the crack growth rate is estimated using the Paris1 law. Finally using these information in a step-by-step procedure, a plate containing an inclined crack subjected to a constant amplitude harmonic loading is analysed and the crack growth path is determined. The results of the method are compared with the available experimental ones. The results show that using this method, the crack propagation path and the fatigue life of structures may be predicted with an acceptable degree of accuracy.

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