STUDY ON WAVE MOTION INPUT AND ARTIFICIAL BOUNDARY FOR PROBLEM OF NONLINEAR WAVE MOTION IN LAYERED SOIL
成层地基非线性波动问题人工边界与波动输入研究

Wave motion input method and artificial boundary conditions in simulation of nonlinear wave motion in infinite layered soils are proposed. One dimensional artificial boundary equations of a linear damping material are derived first. Approximate two dimensional artificial boundary equations are then generalized. The artificial boundary conditions for simulating nonlinear effects of the far-field layered soils are developed by means of equivalent linearization method. Finally,the method of wave motion input is established. Numerical examples prove good accuracy of the artificial boundary conditions and wave motion input method,which can be easily used in study of problems of nonlinear wave motion in layered soils.