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http://dx.doi.org/10.5762/KAIS.2012.13.8.3295

Integrity Evaluation for 3D Cracked Structures(I)  

Lee, Joon-Seong (Department of Mechanical System Engineering, Kyonggi University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.13, no.8, 2012 , pp. 3295-3300 More about this Journal
Abstract
Three Dimensional finite element method (FEM) was used to obtain the stress intensity factor for subsurface cracks and surface cracks existing in inhomogeneous materials. A geometry model, i.e. a solid containing one or several 3D cracks is defined. Several distributions of local node density are chosen, and then automatically superposed on one another over the geometry model. Nodes are generated by the bubble packing, and ten-noded quadratic tetrahedral solid elements are generated by the Delaunay triangulation techniques. To examine accuracy and efficiency of the present system, the stress intensity factor for a semi-elliptical surface crack in a plate subjected to uniform tension is calculated, and compared with Raju-Newman's solutions. Then the system is applied to analyze interaction effects of two dissimilar semi-elliptical cracks in a plate subjected to uniform tension.
Keywords
Stress Intensity Factor; Finite Element Analysis; Surface Crack; Inhomogeneous Materials;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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