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Galerkin - finite element method for elastic wave equations with interface

Lu Ji, University of Massachusetts - Amherst


In this dissertation an elastic parabolic wave equation which approximates the linear elastic wave equations in a depth-dependent medium with fluid/solid interface is considered. A Galerkin Finite Element Method is developed for the discretization in the depth dimension with particular emphasis on the interface. A high-order implicit Runge-Kutta method is adapted to discretize the equations in the marching direction. A finite element function-space is developed which guarantees that the numerical solutions satisfy an extensive system of boundary and interface conditions. The resulting discrete linear system is shown to be non-singular. ^

Subject Area


Recommended Citation

Ji, Lu, "Galerkin - finite element method for elastic wave equations with interface" (1997). Doctoral Dissertations Available from Proquest. AAI9809349.