抄録
The analysis of two-dimensional unsteady elastodynamic problem is performed by the indirect fictitious-boundary integral method th the time-dependent fundamental solution. First, to verify the propriety of this method, the impulsive stresses are analyzed for a circular hole in infinite medium subjected to impulsive pressure at the surface boundary, and this result is compared vth the analytical solution. Next, the longitudinal impact problem of strip th a semi-circular notch is treated, and the dynamic stress concentration factor and the stress distribution are accurately analyzed. In conclusion, the applicability of the present method to two-dimensional unsteady elastodynamic problem is verified.
