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http://dx.doi.org/10.3795/KSME-A.2010.34.5.629

Examination and Improvement of Accuracy of Three-Dimensional Elastic Crack Solutions Obtained Using Finite Element Alternating Method  

Park, Jai-Hak (Dept. of Safety Engineering, Chungbuk Nat'l Univ.)
Nikishkov, G.P. (Dept. of Computer Science and Engineering, The University of Aizu)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.34, no.5, 2010 , pp. 629-635 More about this Journal
Abstract
An SGBEM (symmetric Galerkin boundary element method)-FEM alternating method has been proposed by Nikishkov, Park and Atluri. This method can be used to obtain mixed-mode stress intensity factors for planar and nonplanar three-dimensional cracks having an arbitrary shape. For field applications, however, it is necessary to verify the accuracy and consistency of this method. Therefore, in this study, we investigate the effects of several factors on the accuracy of the stress intensity factors obtained using the abovementioned alternating method. The obtained stress intensity factors are compared with the known values provided in handbooks, especially in the case of internal and external circumferential semi-elliptical surface cracks. The results show that the SGBEM-FEM alternating method yields accurate stress intensity factors for three-dimensional cracks, including internal and external circumferential surface cracks and that the method can be used as a robust crack analysis tool for solving field problems.
Keywords
Finite Element Alternating Method; 3-Dimensional Crack; Stress Intensity Factor; Symmetric Galerkin Boundary Element Method;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 2
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