抄録
A fault rupture mechanism is simulated and the relevant ground failure mode and wave propagation, are investigated. A distinct element code for fracture and failure analysis (DEFA) developed by the authors is used. The Haskell Model is considered for modeling the input displacement in the model. The results show that the crack propagation has an angle of 30-45 degrees with the direction of rupture progress. There are also cracks propagating just beside and parallel to the rupture direction. The vertical component of acceleration is larger in the fault direction, while the horizontal one is larger in the direction of crack propagation. Considering the asperity make a little greater maximum acceleration with higher frequency will be obtained while there is not so much difference in the Fourier spectra.
