Combining the idea of viscoelastic boundary with the theory of BEM,the artificial boundary condition of BEM is formulated,which can eliminate the reflection of the seismic waves on the boundaries of the computational domain.

This paper presents a virtual work equation with viscoelastic boundary conditions,which is used to consider the nonlinearity of dynamic contact conditions.

Based on the soil mechanic model in saturated porous media,by combining viscous-spring artificial boundary with the 2-D explicit finite element method,an explicit numerical wave method is proposed to analyze the effect of the local terrain on the dynamic response of saturated site under diffracting earthquake wave field.

The seismic response analysis method of the rockfill dam which could represent travelling wave effect and radiation damping of infinite foundation was realized through the introduction of viscous-spring artificial boundary and relevant seismic wave input means.

Research on seismic wave input with three-dimensional viscoelastic artificial boundary

A viscoelastic artificial boundary was constructed to simulate radiation damping in a semi-infinite medium and the elasticity recovery capacity of the medium at the far field.

In order to get the artificial boundary that suits to analyze nonlinear structure-foundation interaction problems, the viscoelastic artificial boundary simulating radiation damping of the far field medium was obtained from the elastic wave theory and viscoelasticity theory.

Application of viscoelastic artificial boundary to dynamic response analysis of Shuangjiangkou rock-fill dam;

Applying viscoelastic artificial boundary to dynamic response analysis of Shuangjiangkou rock-fill dam,the effect degree concerning earth-rock dam dynamic response based on viscoelastic artificial boundary and the radiation damping effect of foundation is evaluated.