3-D transient dynamic crack analysis by a novel time-domain BEM

被引：0

作者：

Zhang, C ^{[1
]}

Savaidis, A

机构：

[1] Univ Appl Sci, Hsch Zittau Golitz, Dept Civil Engn, D-02763 Zittau, Germany

[2] Natl Tech Univ Athens, Dept Mech, GR-15773 Athens, Greece

来源：

CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES | 2003年 / 4卷 / 05期

关键词：

3-D time-domain boundary element method; non-hypersingular boundary integral equations; transient elastodynamic crack analysis; elastodynamic stress intensity factors;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel non-hypersingular time-domain traction BEM is presented for three-dimensional (3-D) transient elastodynamic crack analysis. The initial-boundary value problem is formulated as a set of non-hypersingular time-domain traction boundary integral equations (BIEs). To solve the time-domain traction BIEs, a time-stepping scheme based on the convolution quadrature formula of Lubich (1988a,b; 1994) for temporal discretization and a collocation method for spatial discretization is adopted. Numerical examples are given for an unbounded solid with a penny-shaped crack under a tensile and shear impact loading. A comparison of the present time-domain BEM with the conventional one shows that the novel time-domain method is much more stable and less sensitive to the choice of the used time-steps.

引用

页码：603 / 618

页数：16

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