Abstract
The physical mechanisms have been investigated that form and transform the corpuscular-vortex-wave thermal complexes of disturbances in contact tribosystems based on the quantum-mechanical exchange interaction. The presence of a contact gap determines the generation of pairs of quasi-particles-disturbances stabilized by wavelength and frequency. Internal instability and collapse processes in such a system of disturbances lead to the formation of defects in a tribopair's material and underlie the emergency friction regimes. This paper gives specific technical examples of the generation of thermal complexes at fretting, during the friction of sliding and rolling, and at cutting. It has been established that the destructive nature of the process of fretting at low values of reverse sliding speeds is caused by the generation and collapse of the corpuscular-vortex-wave thermal complexes. An example of acoustic friction emission in the ultrasonic region of the spectrum has been used to show the quantum nature of the disturbances generated by friction. The high-frequency spectrum of acoustic emission corresponds to the unbalanced composition of the disturbances and leads to the formation of wear particles. The exchange interaction in a tribosystem involving rolling on the plane has been considered. The results of statistical analysis of such rolling showed the existence of the effect of negative friction caused by the quantum generation of longwave disturbances. It has been demonstrated that the collapsed component of the generation of disturbances is significantly increased under the modes of materials destruction, including when cutting the materials. The corpuscular-vortex-wave mechanism of selective transfer and hydrogen wear in tribosystems has been described. It is shown that the properties of a servovite film under the mode of selective transfer are provided by the collapse processes in the system of disturbances. Similar processes at the vortex-wave transfer of hydrogen atoms in metals lead to the wear and destruction of the surface layer of friction
Highlights
Classical tribology considers external friction as a dissipative, locally-determined form of interaction of rubbing bodies during the accidental realization of the actual contact areas
The wave movement forms are not considered in the theory of dissipative self-organization of friction processes based on the so-called unbalanced thermodynamics
We have analytically presented a method to describe disturbances in a tribosystem in the form of a quantum ensemble of quasi-particles involved in a specific exchange interaction
Summary
Classical tribology considers external friction as a dissipative, locally-determined form of interaction of rubbing bodies during the accidental realization of the actual contact areas. Methods from physical mechanics have recently been widely used to study friction processes and adhere to the same concept, even though experimental results indicate the presence of wave processes in a tribosystem. The wave movement forms are not considered in the theory of dissipative self-organization of friction processes based on the so-called unbalanced thermodynamics. A thermodynamic flow considers only a form of chaotic movement that fully corresponds to the general provisions on dissipative friction. A well-known concept of external friction is based on the slip of the indenter over an elastic-plastic deformable half-plane, it is limited to only one degree of freedom and eliminates all wave elastic bonds. It is a relevant scientific task to study the physical and mechanical features of the tribotechnical contact from the positions of quantum-mechanical processes
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