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| | Abstract | | In this study, a three-dimensional FEM (finite element method) for solving viscoelastic wave propagation problems is presented. Three relaxation mechanisms, second-order polynomial interpolation function and perfectly matched layer (PML) absorbing boundary condition are composed to this FEM framework. FEM produces comparable result to the analytical far-field resolution (reflectivity method) in viscoelastic stratified media. In addition, we show the advantage of FEM that it can handle complex structural problem. In this study, a parallel processing for the FEM is presented. The calculation time of FEM is effectively reduced by supercomputer with 4G bps network or PC-cluster with 1G bps network. We found that FEM performs remarkable CPU time reduction in PC-cluster. In this case, CPU time is reduced to 1/N or less by using N CPUs. |
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