Study of element-free galerkin method in the seismic forward modeling
地震波正演模拟中无单元Galerkin法初探

The Element-free Galerkin Method is applied in the geophysics as one Novel Finite Element.The result of the seismic forward modeling depends on some factors,such as the basis functions,the node distribution,the node numbering,the stabilization condition,the boundary condition,etc.Some conclusions are draw according to the analysis of the factors.The higher orders the basis functions are, the more the data and the calculation quantity are.The different base functions have the different characters,so there are calculational errors uniting the different base functions.The nodes can distribute irregularly,but they must satisfy the sampling theorem.And the rational numbering method of the nodes is beneficial to reduce the data and calculations.The damping boundary conditions overcome the difficulties of the Element-free Galerkin Method on boundaries.The results are good for the application of the Element-free Galerkin Method in the seismic forward modeling.