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Analysis of 3D Planar Crack Problems by Body Force Method

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タイトル: Analysis of 3D Planar Crack Problems by Body Force Method
著者: Hasib, Md Abdul / Saimoto, Akihide
発行日: 2015年
出版者: Trans Tech Publications
抄録: Derivation of the integral equation for general 3D crack problems was examined based on the theory of body force method. In the present analysis, stress intensity factors (SIFs) along a front of arbitrary shaped 3D planar crack are obtained directly only by solving simultaneous equations expressing a boundary condition. The crack surface is discretized using number of triangular elements and the variation of the force doublet embedded in each triangle is assumed at constant. The derived boundary integral equation was transformed into a set of simultaneous equations and was solved computationally. In order to improve the accuracy of the numerically examined boundary integral, a polar transformation scheme combined with Tayler expansion of the fundamental solutions is introduced. Not only a single crack problem but also an interference among coplanar cracks can be calculated using the unique program developed in this research. It was verified that as the number of triangular elements increases, the evaluated SIF converges to the reference solution.
記述: 13th International Conference on Fracture and Damage Mechanics, FDM 2014; Hotel Marina AtlanticoRua Joao de Melo AbreuPonta Delgada, Azores; Portugal; 23 September 2014 through 25 September 2014
キーワード: 3D planar crack / Body force doublet / Stress intensity factor / Triangular crack element
URI: http://hdl.handle.net/10069/35269
DOI: 10.4028/www.scientific.net/KEM.627.5
権利: © (2015) Trans Tech Publications.
資料タイプ: Conference Paper
原稿種類: author
出現コレクション:060 会議発表資料

引用URI : http://hdl.handle.net/10069/35269



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