LOAD DETERMINATION BY ANALYSING THE STRESS STATE FOR THE OPEN-DIE FORGING OF THE ALUMINIUM ALLOY AlMgSi0.5

摘要

This paper deals with the stress state for the open-die forging of a staggered axial-symmetric specimen of the aluminium alloy AlMgSi0.5. The experimental-theoretical method of visioplasticity, adjusted for the process of open-die forging, consisted of five steps. The basic equations of the plasticity theory, i.e., balance equation, conditions of a plastic flow and Levy-Mises equations are applied. The basic partial differential equations of visioplasticity are obtained theoretically, while the displacement of points of the meridian cross-section, which represents the basis for its solution, can be experimentally obtained. The deformation force is calculated on the basis of the obtained results and is compared to the experimental values.