CURRENT STATE AND PROSPECTS OF DEVELOPMENT OF THE THEORY OF MECHANICAL WORKING OF METALS

摘要

Continuum mechanics and mathematical theory of plasticity are the fundamental base for the theory of mechanical working of metals (MWM). The MWM theory is faced, at first glance, with comparatively simple tasks: calculation of the stress-strain state of the material being treated and on this basis a determination of the power and force parameters of deformation; calculation of the regularities of forming during plastic deformation; description of the specific conditions of the technological processes. However, these tasks have numerous and diverse boundary conditions related to the requirement of preservation of plasticity of the metal being deformed and to provision of quality of the deformed metal in the broad sense of this concept. Consequently, the simplicity of the tasks is only seeming. If we imagine the diversity of the technological processes and of the materials being treated, the difference in rheology and change in the physical and mechanical properties of the materials during deformation, etc., then the colossal character of the tasks becomes understandable.