Трение и износ, 2001, Vol.22, No.1
/ Издания академии / Научные журналы
Трение и износ, 2001, Vol.22, No.1
Том 22, номер 1; январь-февраль, 2001
СОДЕРЖАНИЕ
СТАТЬИ
Balakin V.A., Sergienko V.P., Lysenok Yu.V.
Thermophysical processes in the zone of friction contact. pp. 5--9
Summary: Thermophysical models of the processes of heat generation and heat transfer in the zone of friction contact between high-speed and heavily loaded friction units are analyzed. Various thermal configurations of contact interactions between friction couples are
Bogdanovich P.N., Tkachuk D.V.
The effect of thermophysical properties of rubbing bodies on the flash point in a high-speed friction contact. pp. 10--16
Summary: Relationships between the flash point in the friction contact between glass and a metal and glass and glass have been studied experimentally. It has been established that the receding pattern of the relationship is not true for glass and metal couples due exothermal reactions evolving on the actual contact spots and the effect of oxidation products on the thermophysical features of surface metallic layers. It is shown that the relationships between the thermophysical characteristics of materials, the temperature in the contact zone and the shapes of contact spots should be taken into consideration when calculating the flash point.
Bulatov V.P., Kozyrev Yu.P., Tulaev V.I., Fadin Yu.A.
Kinetics of surface fracture in dry friction. pp. 17--20
Summary: The cyclic wear of a copper surface is considered with dry friction. The temporary dependences the generation of acoustic emission and wear particles are resulted during one cycle of the delamination wear.
Bufeev V.A., Bufeev K.V.
The converse mechanofrictional effect. pp. 21--26
Summary: The essence of a novel friction mechanical (converse mechanofrictional) effect first detected during friction of soils has been formulated its formula has been derived. Experimental results are shown how the novel triboeffect is observed and a general pattern how it appears during friction of various materials.
Dzhanakhmedov A.Kh.
Triboengineering problems during operation of oil and gas extracting equipment. pp. 27--30
Summary: Severe conditions of operation oil and gas extracting equipment are analyzed as there wear is induced by the oil and oil-water environment. The mechanisms of failure of tribocouples are analyzed, basic features of tribological indictors are determined and systematized in order to develop practical guides how to promote wear resistance at the stage of designing.
Zharov I.A.
Quasistationary motion of wheel pairs over curves during stabilized wear. pp. 31--38
Summary: A model is advanced allowing to study the influence of the shape of conforming profiles of wheels and rails on their wear, contact fatigue and effective negotiation of curves.
Konechny S., Evtushenko A., Zelenyak V.
Heating of the semispace with edge cracks byfriction. pp. 39--45
Summary: The effect of local surface eating of the semispace by friction on the rate of stresses at the tip of an arbitrarily oriented edge slot and a periodic system of such slots has been studied.
Serdobintsev Yu.P., Burlachenko O.V., Zabolotnyi R.V.
Modeling of friction pairs at low sliding velocities. pp. 46--50
Summary: The mathematic model of rotating friction pairs is presented. This model depicts the friction processes in the mixed and boundary friction regions. The effect of the velocity oscillations frequency and amplitude, as well as bearing support compliance, lubricating type and contact zone microgeometry on the system smooth displacement is founded.
Chigarev A.V., Tsyganov A.R., Kuz'mitskii A.V.
Influence of the wave effect on the dynamics of rolling friction of a wheel. pp. 51--57
Summary: Pure friction of a non-deformable wheel on the solid base is analyzed theoretically. Experimental studies have revealed that resistance to rolling increases » 9 times when the translation of the test bogies sped up from 0.25 to 2.75 m/s (the rolling of steel wheels with the outer diameter 0.125m over a cast concrete slab. In the tests the diameter of the journal was 16.62 and 92 mm, steel-on-steel friction without lubrication). An assumption has been made that this strong resistance leap is due to the oscillatory wave effect accompanying the process of rolling. An equation has been derived for an equivalent wheel. It has been established that the energy losses for rolling are proportional to the squared speed, irrespective of air resistance and hysteresis. A non-linear pattern of friction is demonstrated.
Broshcheva P.N., Okhlopkova A.A., Yuchyugyavea T.S.
The effect of natural zeolit rock on the tribological behavior of polytetrafluorethylene. pp. 58--61
Summary: Mechano-physical, triboengineering characteristics and the structure of polytetrafluorethylene containing natural zeolit rock of different composition have been studied as a function of mechanical activation of the rock. It is shown that the wear resistance and strength characteristics of the composites improves due to the transformation of the polytetrafluorethylene supermolecular structure which is made stronger when the fillers are activated.
Voronin N.A., Semenov A.P., Katsura A.A.
Fast assessment of triboengineering behavior and bearing capacity of volume materials and topocopsites resulting from tests of intersecting cylindircal specimens for friction. Part 2. Discussion of results of tests of typical materials. pp. 62--68
Summary: Volume materials and topocomposites (materials with ion-plasma deposited coatings of the CR--O and Ti--N systems) have been studied. It is shown that the triboengineering behavior and the bearing capacity of the coatings can be assessed using different test configurations, such as sliding, sliding and slip, rolling. Various types of damage and failure of coatings have been revealed when loading increases from 0 to a set final value.
Zaitsev A.L., Kirilenko V.P., Pleskachevskii Yu.M.
Physics and chemistry of wear of phenol polymers during sliding friction in aquous giycol solutions. pp. 69--77
Summary: The results of studies of sliding friction of phenol resins in aqueous ethylene glycol solutions are presented. Various solutions have served as examples to study basic chemophysical processes which accompany friction and wear of phenol polymers in contact with a metal. (IR-spectroscopy, thermochemical and thermogravimetric studies of the surface layers and wear products have revealed that friction characteristics of aqueous glycol complexes are governed by the concentration of the solutions and by interactions with the surfaces of contacting materials. The chemical structure of the aqueous glycol complexes determines their adsorption on friction surfaces, diffusive saturation and plastification of polymeric surface layers.
Kadolich Zh.V., Gradzka-Dahl'ke M., Pinchuk L.S., Anisov A.P.
Investigation of friction surfaces of polymeric grafts in hip joints. pp. 78--83
Summary: A hip joint friction simulator served to perform experimental studies of polymeric insets in hip joint endoprosthetic devices with the microporous friction surface. The results of tribological tests prove that surface treatment to achieve a porous surface friction structure holds much promise.
Kuzharov A.S., Akhverdiev K.S., Kravchik K., Kuzharov A.A.
Molecular mechanisms of self-organization during friction. Part I. A study of self-organization under hydrodynamic friction conditions. pp. 84--91
Summary: Hydrodynamic friction of a moving viscoplastic fluid in the cylindrical bearing has been analyzed theoretically by integrating a complete system of non-linear, non-stationary equations of Genky-Ilyushin, It has allowed to identify a dimensionless parameter s dividing the hydrodynamic friction area unto two modes. Experimental validation of this result by a highly accurate tribological experiment has led to an assumption that one of these modes of self-organization possesses a lubricating layer with smaller friction coefficients than the other mode.
Markov D.P., Markova T.F.
Electrical monitoring of friction couples. pp. 92--98
Summary: Features of electrical monitoring of lubricated friction couples are discussed by using 1--3 V voltage. High noise immunity, valid measurements and cheap standard components make this method suitable for industrial monitoring of discontinuities of the oil film and contamination of the oil with debris in a variety of friction units. The results of the study of the electrical parameters of some friction couples are shown under various conditions of operation, including critical conditions.
Mel'nikova E.P.
The effect of silicate compositions on the triboengineering features of treated surfaces. pp. 99--103
Summary: The performance of silicate lubricating and cooling fluids has been studied and the results compared with the performance of the lubricating and cooling fluids used by industries. The silicate lubricating and cooling fluids improve the quality of surfaces, their wear resistance and extend life of couples.
Rogov V.E., Mognonov D.M., Kornopol'tsev N.V., Ayurova O.Zh., Maksanova L.A.
Lead containing polytetrafluorethyelene-based antifriction materials. pp. 104--108
Summary: Studies of fluoroplastic antifriction compositions with lead-containing compounds as fillers, such as lead(industrial) powder, lead powder from discarded batteries and lead dioxide, have revealed that the compositions with 50 mass % of lead powder from discarded batteries and 50 mass % lead dioxide heat treated in the air possess good mechanical behavior, stable friction behavior and improved wear resistance exceeding those of the industrial material F4K20 1.3--3 times.
Serafimovich V.V., Shelestova V.A., Gorbatsevich G.N., Grakovich P.N.
Triboengineering feaures of the Fluvis composite. pp. 109--112
Summary: The triboengineering features of the new composite material Fluvis have been studied during friction without lubrication, in oil and in water. It is demonstrated that the bearing capacity of Fluvis is 2--2.5 times superior than carbon filled fluoroplastics as its counterparts.
ЛЮДИ НАУКИ
Pytko S. Jerzy (70 years since birthday). pp. 113--114
Fuks G. Isaakovich (90 years since birthday). pp. 115--116
ХРОНИКА. p. 117
КАЛЕНДАРЬ КОНФЕРЕНЦИЙ. p. 118
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Designed and maintained by Dr. Nikolai N. Kostyukovich. Last updated: September 25, 2001
Created with assistance of Dr. Ignatii I. Korsak
Copyright © 2001 The National Academy of Sciences of Belarus
Copyright © 2001 The V.A.Biely Institute of Mechanics of Metal-Polymer Systems
