INVESTIGATION OF THE EXPERIMENT AND MODELING OF THE PROCESS OF EXPANSION OF PIPES DURING HYDROFORMING
The article studies the experiment and simulation of the process of hydroforming the expansion of pipes. The obtained coefficient of expansion and the degree of thinning of the thickness during the experiment and modeling are significantly analogous. Development of mathematical models of the expansion coefficient and the degree of thinning of the thickness depending on the internal working pressure. This made it possible to recommend the value of the working pressure in the design of the process of hydroforming the expansion of pipes.