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Information × Registration Number 0216U008268, 0116U003697 , R & D reports Title Investigation of thermomechanical effect of a gas in interface gaps on contact interaction between bodies. popup.stage_title Head Chumak Kostyantyn Andriyovych, Registration Date 21-12-2016 Organization Pidstryhach Institute of Applied Problems of Mechanics and Mathematics NAS of Ukraine popup.description2 The mathematical models of thermoelastic contact without friction and partial thermal frictional slip between two semi-infinite bodies in the presence of a gas in an interface gap, which is caused by a groove of small height on the surface of one of the bodies, have been developed. The thermal effect of the gap filler has been taken into account by thermal resistance dependent on a gap height, and the mechanical effect - by its pressure on the surfaces of the bodies. The materials of the bodies have been assumed to be identical when investigating the partial slip phenomenon. The ideal gas has been selected for the physical model of the gas. The effects of the gas pressure and the applied force and thermal loads on gap deforming, thermal contact resistance and slip zones propagation. Each of the formulated contact problems has been reduced to a corresponding system of singular integro-differential equations, and separate analytical-numerical techniques have been developed to solve them. The calculations have been carried out for real materials (stainless steel AISI 304, aluminium alloy A380) and gases (air, argon, krypton, helium, carbon dioxide). The thermomechanical influence of the intercontact medium and the influence of the force and thermal loads on the interface gap width, the gas temperature, the thermal contact resistance in the case of action of gas pressure and its absence, the thermal rectification level, the slip zones extent, the relative shift of the surfaces of the bodies and the contact shear stress distribution have been analyzed. The results of the research work are important for tribology, energetics, microelectronics and engineering industry. Product Description popup.authors Маланчук Н.І. Слободян Б.С. Чумак К.А. popup.nrat_date 2020-04-02 Close