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Application of boundary element method with singular and isoparametric elements in three dimensional crack problems

✍ Scribed by Gangming Luo; Yongyuan Zhang

Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
694 KB
Volume
29
Category
Article
ISSN
0013-7944

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✦ Synopsis

In the paper, an ~vestigation into the stress intensity factors of mixed-mode three dimensional crack problem is studied. In the method presented in the paper, the number of elements and nodes can be decreased greatly while computational accuracy and efficiency increase, the continuous functions of stress intensity factors along the front of crack can be obtained easily. For an elliptical crack, the parametric equation of an ellipse is introduced, so that the contour of the crack can be represented exactly. There are two examples to test the efficiency of the method. Finally, a cross-shaped pipe-junction with surface cracks is investigated, which is used in offshore engineering.

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