Simulation On Non-uniform Velocity Dynamic Crack Growing By TDBEM
Price
Free (open access)
Transaction
Volume
25
Pages
10
Published
1999
Size
794 kb
Paper DOI
10.2495/BE990021
Copyright
WIT Press
Author(s)
Zhenhan Yao, Zhihong Zhou & Bo Wang
Abstract
The time-domain dual boundary element method (TDBEM), due to its single-region feature, has been successfully used for simulating crack growth problem M. However the previous work pay little attention to weakly singular integration in TDBEM, which may result in error about several percent ^. To improve the accuracy of numerical integration, first, the quadratic or biquadratic equations have been derived to find out weakly singular points in an elerm nt, and the element is divided into several integration sections according to he singular points. Each section only has one singular point at the end. Then, a function transformation has been introduced into weakly singular integration of each section to eliminate the singularity. The method is turned out to
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