Publication Details
Abstract
Many causes of the asymmetry of the rolling process can occur during the rolling of a thick plate under industrial conditions; the most important are non-uniform heating of the charge, the mismatch between the neutral axis of the strip and the neutral axis of the deformation zone, unequal diameters of the upper and lower working rolls, inaccurately manufactured parts of the rolling cage, the difference in the characteristics of the drive control systems of certain rolls. At present, the optimization of energy-saving technologies in mechanical engineering for the production of rolled sheets of various configurations using modern methods of mathematical modeling is becoming an important direction for the informatization of machine-building production. The process of cold rolling of metal sheets in the core, using asymmetric technology is accompanied by a non-homogeneous stress-strain state. Finite element simulation provides the researcher with universal tools for approximating complete solutions for various bodies of complex configuration and therefore has a wide application. An obvious disadvantage of finite element analysis is a rather high computational volume and a limited ability to understand the transition from one equilibrium state to another. Analytic approaches, through generality, can usually overcome both of these problems. In this article, based on mathematical modeling in non-canonical deformation regions, an approach is proposed to determine the optimal technological parameters in the study of the stress-strain state of the cold rolling process using asymmetric and symmetric technologies in the core of elastic-plastic deformations.