The so-called stress-strain curve in engineering is usually the nominal stress-strain curve.However,this kind of curve is only approximate,which only provides a reference to actual engineering problems.The true stress-strain curve of the widely used metal material-Q235 was obtained,through the experimental research of uniaxial compression combined with the method named A/H extrapolation.By this method,the force of friction of the specimen＇s end planes to the press ram and table can effectively eliminated from the experimental results,thas maki...
