INFLUENCE OF THE EXPANSION SCHEME ON THE STRESS-STRAIN STATE OF PIPES AND GEOMETRIC PARAMETERS

Abstract

The paper presents a study of the effect of pipe expansion on its final geometric parameters. The main ge-ometric characteristic is the ovality of the finished pipe. Computer modeling was carried out with a change in the expansion coefficient, with various expansion technologies and with a change in the first feed coefficient. The impact of the subsequent expansion step on the previous ones was also assessed.