Non-linear seismic responses of tunnels within normal fault ground under obliquely incident P waves

Effective non-reflective boundary for Lamb waves: Theory, finite element implementation, and applications

The effect of annular multi-point initiation on the formation and penetration of an explosively formed penetrator

Surface-wave attenuation by periodic pile barriers in layered soils

Damage response of steel plate to underwater explosion: Effect of shaped charge liner

After a brief review of studies on artificial boundaries in dynamic soil-structure interaction, a three-dimensional viscous-spring artificial boundary (VSAB) in the time domain is developed in this paper. First, the 3D VSAB equations in the normal and tangential directions are derived based on the elastic wave motion theory. Secondly, a numerical simulation technique of wave motion equations along with the VSAB condition in the time domain is studied. Finally, numerical examples of some classical elastic wave motion problems are presented and the results are compared with the associated theoretical solutions, demonstrating that high precision and adequate stability can be achieved by using the proposed 3D VSAB. The proposed 3D VSAB can be conveniently incorporated in the general finite element program, which is commonly used to study dynamic soil-structure interaction problems.

Jun Wu

Papers

3D viscous-spring artificial boundary in time domain

Experimental and numerical study on the flight and penetration properties of explosively-formed projectile