Time domain method for calculating free field motion of a layered half-space subjected to obliquely incident body waves

摘要: In numerical simulation of wave scattering under oblique incident body waves using the finite element method, free field motion at lateral boundary induced by background layered half-space complicates computational area. order to replace complex frequency domain a time-domain method calculate subjected is developed in this paper. The new decouples equations used and offers an interpolation formula motion. This based on fact that apparent horizontal velocity constant can be calculated exactly. Both theoretical analysis results demonstrate proposed high degree accuracy.