TY  - EJOU
AU  - Zhang, Ch.  
AU  - Savaidis, A.  

TI  - 3-D Transient Dynamic Crack Analysis by a Novel Time-Domain BEM
T2  - Computer Modeling in Engineering \& Sciences

PY  - 2003
VL  - 4
IS  - 5
SN  - 1526-1506

AB  - 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.
KW  - 3-D Time-domain boundary element method
KW  -  Non-hypersingular boundary integral equations
KW  -  Transient elastodynamic crack analysis
KW  -  Elastodynamic stress intensity factors

DO  - 10.3970/cmes.2003.004.603