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H. Nguyen-Dang* and A.M. Yan#

*LTAS-Fracture Mechanics, University of Liège, Belgium
#Department of Mechanics Engineering, Nanjing Institute of Chemical Technology, China

doi:10.4203/ccp.26.9.6

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H. Nguyen-Dang, A.M. Yan, "Fatigue Crack Growth Studies using Dual Boundary Element Method", in M. Papadrakakis, B.H.V. Topping, (Editors), "Advances in Computational Mechanics", Civil-Comp Press, Edinburgh, UK, pp 301-310, 1994. doi:10.4203/ccp.26.9.6

Abstract

This paper presents a application of the dual boundary element method (DBEM) to the two-dimensional fatigue analysis of multiple-cracked body. The usual displacement integral equation is applied on ones of surfaces of cracks while the traction integral equation simultaneously on the others. The discontinue quadratic elements are used for discretization of the cracks. General multiple crack problem is solved in a single-region formulation. The real extension path of crack is simulated by a piece-wise linear increment of crack, based on the maximum principal stress criterion. For each incremental analysis, crack extension is conveniently modelled with new boundary elements. Remeshing is not longer necessary. Fatigue life analysis is carried out with Paris' law. Several numerical examples show high efficiency of present method.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 26 ADVANCES IN COMPUTATIONAL MECHANICS Edited by: M. Papadrakakis and B.H.V. Topping Paper IX.6 Fatigue Crack Growth Studies using Dual Boundary Element Method H. Nguyen-Dang* and A.M. Yan# *LTAS-Fracture Mechanics, University of Liège, Belgium #Department of Mechanics Engineering, Nanjing Institute of Chemical Technology, China doi:10.4203/ccp.26.9.6 purchase the full-text of this paper Full Bibliographic Reference for this paper H. Nguyen-Dang, A.M. Yan, "Fatigue Crack Growth Studies using Dual Boundary Element Method", in M. Papadrakakis, B.H.V. Topping, (Editors), "Advances in Computational Mechanics", Civil-Comp Press, Edinburgh, UK, pp 301-310, 1994. doi:10.4203/ccp.26.9.6 Abstract This paper presents a application of the dual boundary element method (DBEM) to the two-dimensional fatigue analysis of multiple-cracked body. The usual displacement integral equation is applied on ones of surfaces of cracks while the traction integral equation simultaneously on the others. The discontinue quadratic elements are used for discretization of the cracks. General multiple crack problem is solved in a single-region formulation. The real extension path of crack is simulated by a piece-wise linear increment of crack, based on the maximum principal stress criterion. For each incremental analysis, crack extension is conveniently modelled with new boundary elements. Remeshing is not longer necessary. Fatigue life analysis is carried out with Paris' law. Several numerical examples show high efficiency of present method. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £70 +P&P)
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