Simulation On Non-uniform Velocity Dynamic
Crack Growing By TDBEM
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
Keywords
Related Book
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