Ishlinskii Institute for Problems in Mechanics

Moscow, Russia

Ishlinskii Institute for Problems in Mechanics

Moscow, Russia
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Goryacheva I.G.,Ishlinskii Institute for Problems in Mechanics | Morozov A.V.,Ishlinskii Institute for Problems in Mechanics | Rozhdestvensky Y.V.,South Ural State University | Gavrilov K.V.,South Ural State University | Doikin A.A.,South Ural State University
Journal of Friction and Wear | Year: 2013

A method for evaluating the tribological parameters and service life of the piston-cylinder tribosystem of a diesel engine based on calculations and experimental studies is presented. This approach makes it possible to determine the calculated duration of contact between the friction surfaces of the tribosystem; to obtain an experimental dependence of the wear rate on the contact pressure in this friction pair; and, based on this, to evaluate the service life of the piston-cylinder tribosystem of the diesel engine taking into account the mode of its operation as a component of a machine. © 2013 Allerton Press, Inc.


Torskaya E.V.,Ishlinskii Institute for Problems in Mechanics | Mezrin A.M.,Ishlinskii Institute for Problems in Mechanics | Morozov A.V.,Ishlinskii Institute for Problems in Mechanics | Useinov A.S.,Technological Institute for Superhard and New Carbon Materials | And 2 more authors.
Journal of Friction and Wear | Year: 2015

Results of tribotests of thin coatings based on multicomponent oxides are presented. Tests have been conducted using two instruments, i.e., a NanoScan-3D scanning nanohardness tester and a UMT-2 tribometer. A comparative analysis of the results of the tribotests has been carried out. The causes of the spalling of the coatings have been studied theoretically and experimentally. © 2015, Allerton Press, Inc.


Soboleva E.B.,Ishlinskii Institute for Problems in Mechanics
Russian Journal of Physical Chemistry B | Year: 2014

Main regularities of heat gravitational convection are considered near the thermodynamic critical point. Special physical properties of supercritical fluids (strong increase of heat capacity at constant pressure and coefficients of heat extension and isothermal compressibility, convergence to zero of the coefficient of thermal diffusivity upon approximation to a critical point) lead to the features of convective flow and heat transfer. Hydrodynamic behavior of supercritical fluids is characterized by intensification of internal movement, decrease in the spatial scale of convection, formation of a piston effect, temporal multiresolution of dynamic and heat processes, and the effect of stratification. © 2014, Pleiades Publishing, Ltd.


Makhovskaya Y.Y.,Ishlinskii Institute for Problems in Mechanics
Journal of Friction and Wear | Year: 2015

A model for calculating a nonstationary temperature field in a brake disk made of a fibrous composite material has been proposed. The calculation procedure includes solving the heat conductivity problem for a disk with averaged effective thermal conductivities and determining these effective coefficients with account for the structure of the composite at different scale levels, i.e., the structure of a bundle consisting of individual fibers at the microlevel, the dimensions and concentration of the bundles at the mesolevel, and the orientation of the bundles relative to the macroscopic shape of the disk. An example of the calculation of the temperature for a carbon–carbon composite brake disk under conditions of braking implemented in a friction machine is presented. An analysis of the effect of parameters that characterize the structure of the composite and properties of its components on the heating of the disk during braking is carried out. © 2015, Allerton Press, Inc.

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