FORMATION OF MODELS AND METHODS FOR ANALYSIS OF STRESS-STRAIN STAND WITH CONTACT INTERACTIONS (REVIEW ARTICLE)

Abstract

An analysis of the literature and developing models and methods for analyzing the stress-strain system based on the contact interaction between bodies has been conducted. The history of the development of models and methods of analysis of the stress-deformation mill with the protection of contact interaction is considered, which makes it possible to appy the postulates with the drive of what is not necessary: ​​the combination of different types of nonlinearities; transition to a variational formulation of the problem; protection of the surface of contacting bodies; establishment of the method of formalized parametric modeling simultaneously with the combined elements method. Therefore, it is necessary to develop the model, since, in view of the known previous models, they will operate from variable, rather than permanent, physical-mechanical influences on the material of the torsion shafts. It has been concluded that the methods for breaking up the stress-deforming machine, which have been formed, do not support many factors that influence on the elements of armored vehicles, so as not to give an adequate assessment of their value and efficiency durability. The need to move to a variable formulation of the problem and a formalized parametric modeling of processes and stages in the design research of elements of combat armored vehicles simultaneously from the combined element method has been considered. This will make it possible to organize the search for rational design and technological solutions for torsion shafts being part of light armored vehicles with high tactical and technical characteristics. In this case, it is necessary to ensure sufficient adequacy of the model and satisfactory efficiency in numerical investigations. Keywords: light armored vehicle; tactical and technical characteristics; torsion shaft; stress-strain state; strength; durability; elastic-plastic deformation; contact interaction