Analysis of dynamic characteristics of a contact interaction of solids using computational software

The reliability of connections of machine parts and mechanisms is laid at the stage of engineering design. Studies show that more than 80% of failures of machineries and mechanisms are caused the processes occurring in the zone of contact parts. Therefore, modern engineering design is difficult to imagine without tools for solving contact problems. From the point of the mechanics of contact interaction, a connection of machine parts is a complex technical system. Therefore, to determine performance indicators, the main research method of complex systems are used, i.e. the method of mathematical modeling. The method of calculating the contact approach of elastic-plastic smooth bodies should organically be combined with the approach of applying the classical contact problems of the theory of elasticity and plasticity in strength and rigidity calculations in machine-building. And in relation to the study of rough surfaces, an organic combination with the developed theories of contacting rough surfaces is necessary. Therefore, the development of a computational model of inelastic deformation of materials is one of the fundamental problems of modern engineering. To reduce the time for the process of calculating the dynamic characteristics, a computational-software complex was created in which a model for calculating static and dynamic parameters (proximity, voltages, and amplitudes of contact oscillations) needed to describe and predict the operation of conditionally fixed connections of machine parts at stages was laid at the stage of engineering design. When creating a computational software package aimed at evaluating the dynamic characteristics of a mechanical contact in an elastoplastic dissipative contact, factors determining the state of the object under study were identified. The main factors include physicomechanical properties of the contacting bodies, geometric characteristics of surfaces, and external conditions. The purpose of this work is to analyze the dynamic characteristics of the contact interaction of solids beyond the elastic limit in the normal direction of the external load to the contact plane, which were obtained using a computational software package evaluating the dynamic characteristics of a mechanical contact in an elastoplastic dissipative contact. The presented theoretical results allow us to estimate both the quality of the software itself and the physical and mathematical model embedded in the calculation and software complex.