EXPLICT FINITE ELEMENT METHOD FOR DYNAMIC ANALYSIS IN THREE -MEDIUM COUPLING SYSTEMS AND ITS APPLICATION

摘要

In this paper, an explicit finite element method to analyze the dynamic responses of three-medium coupling systems with any terrain is developed. The explicit finite element dynamic expressions for the nodes on the joint line among fluid saturated porous media, elastic single-phase media and ideal fluid media are proposed. The method is applied to analyze the seismic hydrodynamic pressure in a reservoir. The hydrodynamic pressure is calculated and some conclusions are given, which can be used as references of the anti-seismic design.