Analysis of Three-Dimensional Cracks with Independent Crack Mesh |
| Journal |
Solid State Phenomena (Volume 110) |
| Volume |
Advances in Safety and Structural Integrity 2005 |
| Edited by |
Young-Jin Kim |
| Pages |
55-62 |
| DOI |
10.4028/www.scientific.net/SSP.110.55 |
| Online since |
March, 2006 |
| Authors |
Tae Soon Kim,
Jai Hak Park,
June Soo Park,
Jong Sung Kim,
Tae Eun Jin
|
| Keywords |
Finite Element Alternating Method FEAM, Stress Intensity Factor (SIF), Three-Dimensional Cracks |
| Abstract |
In order to simulate the growth of arbitrarily shaped three-dimensional cracks, the finite element alternating method is extended. As the required solution for a crack in an infinite body, the symmetric Galerkin boundary element method formulated by Li and Mear is used. In the study, a crack is modeled as distribution of displacement discontinuities, and the governing equation is formulated as singularity-reduced integral equations. With the proposed method several example problems, such as a penny-shaped crack, an elliptical crack in an infinite solid and a semi-elliptical
surface crack in an elbow are solved. And their growth under fatigue loading is also considered and the accuracy and efficiency of the method are demonstrated. |
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