Research on Hybrid Algorithm of Explicit Newmark-FDTD and Traditional FDTD Methods

The Newmark method is used to discretize the subgridding numerical system, and explicit Newmark-FDTD method is obtained by employing the Neumann series to expand the inverse of the coefficient matrix. Furthermore, the hybrid algorithm of explicit Newmark-FDTD and traditional FDTD methods is employed to further improve the computational efficiency.