Трение и износ, 2003, Vol.24, No.6
/ Издания академии / Научные журналы
Трение и износ, 2003, Vol.24, No.6
Том 24, номер 6; ноябрь-декабрь, 2003
СОДЕРЖАНИЕ
СТАТЬИ
Borodachev N.M., Tarikov G.P., and Komrakov V.V.
A Hertzian problem with the allowance for wear. pp. 587--593
Summary: A problem is treated of two elastic bodies in sliding contact with the allowance for wear of their surfaces. An integral solution of the contact problem is derived with an allowance for wear. It is shown that if the contact spot is elliptic it is possible to obtain a solution of the equation and assess the effect of wear on contact pressure and parameters of the contact region.
Zharov I.A.
Models of adhesion between the rail and the wheel. pp. 594--600
Summary: Summarized models are proposed how the wheel adheres to the rail. These models can be used as a guiding principle how to control traction and skidding.
Akhverdiev K.S., Kolobov I.A., and Yalyshev R.G.
A hydrodymaic calculation of a metal-polymeric bearing operating during semi-liquid friction with a micropolar lubricating material. pp. 601--608
Summary: One reserve of promoting the load bearing capacity of hydrodynamic metal-polymeric bearings is to use micropolar lubricating materials. A method is proposed how to perform a hydrodynamic calculation of the metal-polymeric bearings operating during semi-liquid friction with a micropolar lubricating material.
Kougiya F.A.
Description of the friction behavior of polymeric melts with the account of their elastic characteristics. pp. 609--612
Summary: It is discussed hot to approach modeling of flow of an abnormally viscous fluid with the account of sliding over channel walls. The sliding velocity is expressed as a function of the shear stress and elastic shear deformation. The elastic shear deformation is considered as a function of the elasticity modulus and the shear rate and is determined from an analysis of published experimental data. Empirical coefficients of the model arc determined and its potential is shown.
Ivasyshin G.I.
The effect of an elastic after-effect of a high-precision metal cutting lathe and its additivity on the static friction characteristic. pp. 613--619
Summary: It is shown that tribodynamic models of effective processes in high-precision metal cutting lathes should approached with the account of the effect of gradually evolving processes on the output parameters of lathe and that full deformability of an elastic system depends on the elastic after-effect and its additivity. It is substantiated that the dynamics of a high-precision lathe should be estimated with the account of non-elastic processes. A method is demonstrated how the elastic after-effect and its additivity are studied. It is concluded that the transmission function of the friction process changes based on the experimental study of the elastic after-effect and additivity in case of friction without any lubricating material.
Ikramov U.A., Irgashev A., and Makhkamov K.Kh.
Calculation model to assess wear resistance of tooth gears. pp. 620--625
Summary: A calculation method is proposed to determine the concentration of debris in oil in response to the wear rate of friction surfaces with active and passive involvement of abrasive particles and to the magnitude of linear wear of gear teeth as a function of debris concentration. It is exemplified by a calculation of debris concentration in the oil in the auxiliary final drive of a wheel tractor. The obtained calculated results correlate with the results of tests in operation.
Yarosh V.M., Moisheev A.A., and Bronovets M.A.
Study of friction and wear of materials in the open space in the lunar orbit. pp. 626--635
Summary: The problems of methods of triboengineering tests of solid lubricating coatings during the Luna-22 space mission are considered. The design of a self-contained friction simulator and its basic technical characteristics are described together with the information about materials and conditions of testing. The results are discussed obtained with a workbench, on the launching pad and in the open space ad compared. It is shown that the results of the space experiment obtained in 18 sessions during 1.5 years correlate with the simulation earth tests, yet they have a number of distinctions.
Chernyakova Yu.M., Kadolich Zh.V., Pinchuk L.S., Tsvetkova E.A., and Nikolaev V.I.
The effect of the electromagnetic field on the tribological characteristics of the synovial fluid. pp. 636--641
Summary: A pendulum tribometer served to study friction of mobile couples simulating friction in a joint endoprosthesis. Friction couples, such as superhigh molecular polyethylene and medical steel lubricated with the synovial fluid in the electromagnetic field were studied. A relation is revealed between the friction coefficient, the type of a disease of joints and its graveness. The friction coefficient diminishes under the effect of the electromagnetic field on the lubricating layer of the synovial fluid in case of the non-immunity synovitis. Regularities are revealed how the friction coefficient changes in friction in response to different diseases of joints identified by pathological changes in protein molecules and three-dimensional changes in supramolecular structures in the synovia.
Komkov O.Yu.
A reciprocating type microtribometer operating within a range of light loads: design features and methods of tests of specimens. pp. 642--649
Summary: The design of a reciprocating microtribometer is described in which a contactless linear electromagnetic drive with feedback is used and that has a system of monitoring of normal loading. The method of computerized testing enables to test fine coating within a range of light loads.
Ermakov S.F., Parkalov V.P., and Shadrin V.A.
A study of the shielding effect of cholesterol liquid crystalline compounds using pendulum sclerometry. pp. 650--653
Summary: The results are presented of a study of the effect of individual liquid crystalline compounds, fatty acids and their solutions in the vaseline oil on the properties of surface layers of solids. The pendulum sclerometry has revealed the effect of reduction of copper hardness is much less in the medium of a an oleic acid derivative of the cholesteric type (the oleic acid cholesteryl ester) in contrast to the pure oleic acid medium. It is shown that liquid crystalline layers of anisometric molecules of mesogenous cholesterol compounds inhibit stronger the penetration of an indentor, hence they produce a stronger shielding effect than layers of oleic acid polar molecules. It is noted that such behavior is typical also for nematic liquid crystals. Therefore, the accomplished study prove that cholesterol mesogenous compounds on metallic surfaces produce protective liquid crystalline layers keeping the surfaces apart without any dynamic contact between them.
Krasnov A.P., Rashkovan I.A., O.V. Afonicheva, Kazakov M.E., Mit V.I., and Dubovik I.I.
Tribochemical processes and tribological properties of carbopastics with glass fiber and glass spheres based on polyamide and polyethylene. pp. 654--660
Summary: Mix compositions of a carboplastic based on polyamide-6 (PA-6) were studied containing glass fiber or glass spheres. It is shown that the mix compositions have optimal tribological characteristics with PA-6 is modified with polyethylene that improves in friction the tribochemical stability and with glass fiber the positive gradient in the surface layers of the mix materials.
Dmitrieva T.V., Sirovatka L.A., and Gajduk R.L.
The effect of a tribopolimerazing additive in the dispersant and antifriction behavior of binary systems based on rape seed oil. pp. 661--665
Summary: The effect of a tribopolymerizing additive on the dispersant, antifriction and rheological behavior of binary systems based on the rapeseed oil is studied. It is established that ordered structures appear that serve as an additional factor of lubrication of the friction contact.
Vityaz A.P., Azizov R.O., Belotserkovskii M.A., and Kukareko V.A.
Improvement of quality of gas-thermal coatings from wire materials by chemothermal treatment. pp. 666--672
Summary: The structure condition, durometric and triboengineering properties of gas-thermal coatings are studied after their carbonitration and boronation. It is established that after chermothermal treatment the surface microhardness of sputtered coatings from steel Cb-08 increases 3...7 and wear resistance ~30 times versus the original and 1.5...2 times versus cast heat-hardened steel 45. Chemothermal treatment affects positively the strength of adherence of gas thermal coatings to the base.
Uglov V.V., Kuleshov A.K., Novitskaya M.V., Dub S.N., Shmegera R.S., Polo I., and Tierry F.
Mechanophysical and triboengineering properties of hydrogen containing copper-carbon films applied by microwave laser intensifed precipitation. pp. 673--679
Summary: The elementary composition, nanohardness and tribological properties of Cu/a-C:H composite films applied by microwave plasma intensified precipitation are studied. It is established that carbon concentration in a film augments monotonously from 0 to 78 atomic% as the concentration of C2H2 increases within a range 0--100 % in the Ar + C2H2 gas mixture. The nanohardness of the composite film increases from 2 to 6 GPa as carbon concentration grows from 37 to 78 %. Films more than double their wear resistance with = n a range of carbon concentration 23--29 %.
Savchenko N.L., Korolev P.V., and Kulkov S.N.
The surface texture of Y--TZP ceramic after dry friction on steel. pp. 680--686
Summary: A radiographic study of the surface of the transformation hardened Y--TZP ceramic was performed after dry friction within a broad range of speeds (0.2--11.1 m/s). Basic tendencies of variations of the ratio of intensities I(002)/I(200) of the lines of the ZrO2 tetragonal phase are revealed in response to the sliding velocity and the sizes of ceramic grains. Mechanisms of lattice re-orientation at different sliding velocities are discussed.
Basinyuk V.L., Korobko E.V., Mardosevich E.I., Goncharova N.A., Korobko A.O., and Mardosevich M.I.
Controling triboengineering parameters of rubbong couples. pp. 687--693
Summary: Results of studies show how it is possible to control the tribological parameters of rubbing couples with ceramic oxide coatings by using electrorheological fluids for their lubrication.
ХРОНИКА
News of International Tribology Committee. p. 694
КАЛЕНДАРЬ КОНФЕРЕНЦИЙ. p. 695
Contents of Volume 24 (January--December 2003). pp. 696--699
Authors index of Volume 24, No 1--6. p. 700
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Designed and maintained by Dr. Nikolai N. Kostyukovich. Last updated: May 27, 2004
Created with assistance of Dr. Ignatii I. Korsak
Copyright © 2003, 2004 The National Academy of Sciences of Belarus
Copyright © 2003 The V.A.Biely Institute of Mechanics of Metal-Polymer Systems
