This paper describes a way of solving the reservoir simulation pressure equation using multigrid technique.The subroutine MG of four-grid method is presented.Th
In this paper,on the basis of experimental data of two kinds of chemical explosions,the piston-pushing model of spherical blast-waves and the second-order Godun
There are N domains D<sub>j</sub>.(j=0,1,……,N-1 )of different physical parameters in the whole space and their interfaces.S<sub>jj+1</sub>are non-horizontally s
In this paper,the large deflection theory is adopted to analyse the geometrical nonlinear stability of a sandwich shallow cylindrical panel with orthoiropic sur
Using Beltrami-Schaefer stress function in the theory of elasticity in this paper,we derive the stress functions of torsion,plane problem,axisymmetric deformati
It is of great practical importance to analyze the shakedown of shell structures undercyclic loading,especially of those made of strain hardening matericls.In t