A Yield Criterion for Pressure-Sensitive Materials

Abstract

Following the modified Gurson model in meso-mechanics, the models with spherical holes are established by the assumption which the matrix meets the two-parameter elliptic yield condition. The macroscopic stress expression which contains micro structure parameters and the material equation of yield surface are given by the upper bound theorem of plastic limit analysis. The parameters of the matrix material and damage(porosity) which impact on macroscopic yield surface equation are discussed. These works provide theory foundations for material damage and design.

The Application of MATLAB in Computational Fluid Dynamic Visualization Processing

“…These *.dat files were used by the program compiled by MATLAB instruction. The MATLAB program reads in *.dat files by the instruction of load automatically and generates three-dimensional colour contour map [9].…”