Rogacheva N.A.Modeling contact interactions between a rigid indentor and a laminar system with consideration of friction. pp. 376--379Summary: A contact friction problem is considered when a rigid indentor slides on a fine isotropic composite-based coating. The effect of the friction coefficient on the contact pressure distribution is studied.
Evelson L.I., Zakharov S.M., Pamfilov E.A., Rafalovskaya M.Ya.
PC-process of analyzing and synthesizing friction units usingb databases and expert systems. pp. 380--385
Summary: A PC-process of calculating and designing units using the database (DB) and expert systems (ES) is proposed. The DB structure includes the names (brands), parameters of process treatment, volume and surface characteristics of materials to be used in friction units, characteristics of testing equipment, conditions and results of experiments, etc., as well as a variety of auxiliary data necessary for designers. Expert systems of two types are used: "common" systems comprising the knowledge base (KB) based on the rules, an interpreter block, an interface portion, and a hybrid ES which, in addition, contain the blocks for performing calculations using traditional methods of programming. The system combining the described DB and ES can operate in three major modes: data input and processing; determination of characteristics of a specified friction unit; optimal designing of a tribosystem. The above PC-process is projected to be used for designing friction units of transport vehicles at designing organizations and for taining students majoring in "triboengineering".
Kuznetsov S.A., Brovman M.Ya., Vinogradov À.I.
Creating conditions of liquid friction in drawing. pp. 386--392
Summary: A precise solution has been obtained of the flow of a viscoius liquid in the clearance having one wall stationary and the other moving at a consant speed. The solution is applicable to the liquids when the invariants of stress tensors and deformation rates are related through an exponential dependence. The calculations have been used to develop a process of drawing with liquid friction.
Chichinadze A.V., Braun E.D., Gekker F.R., Kokonin S.S., Luzhnov Yu.M., Suvorov A.S., Khairaliev S.I.
Aspects of data studies of thermal dynamics and modeling of friction and wear of friction couples at the stage of projecting the working characteristics of loaded braking devices. pp. 393--400
Summary: New comprehensive methods are proposed for calculating and assessing experimentally the friction -- wear, temperature and vibration characteristics of multidisk brakes of aircraft wheels at the stage of projecting and designing. An example of most promising brakes with disks from carbon friction composite materials (CFCM) illustrates the methods.
Dankov A.M.
Choice of an optimal design of the engagement with a variable gear ratio based on the wear resistance criterion. pp. 401--407
Summary: A design of the transmission is described having a variable gear ratio based on the tooth wheel with assembled tooth sectors which project in respect to the axis of rotation to a distance which varies within the required range. The significance of wear resistance is corroborated as a criterion for evaluating the performance of the transmission and a simplified algorithm is shown to determine the friction path in characteristic points of tooth profiles of the basic modifications of the transmission with assembled tooth wheels.
Balakin V.A., Sergienko V.P., Rodzevich P.E.
Comparative analysis of heat loading of brakes of passenger cars. pp. 408--413
Summary: Temperature increments on the surface of the friction strip and the disk (the drum) pair have been calculated which occur when passenger cars of various makes are braked in emergencies.
Markova L.V., Myshkin N.K., Semenyuk M.S., Kwon Î.Ê., Kong H.
On-line opto-magnetic detector and its application for air compressor system monitoring. pp. 414--419
Summary: Opto-Magnetic Detector (OMD) developed in Metal Polymer Research Institute of Belarus National Academy of Sciences in cooperation jointly with Korea Institute of Science and Technology is presented for condition monitoring of tribosystem. Monitoring with OMD is based on estimation of oil degradation and wear debris concentration in oil. The results of laboratory test are shown and case of a OMD application for air compressor system monitoring is described.
Zamyatin A.Yu., Zamyatin V.Yu.
Development of the system of PC-supported calculation and experimental determination of the parameters of frictional fatigue of linearly contacting surfaces. Part 2.The analysis of the structure and the kinematics of the experimental installation. pp. 420--423
Summary: The original postulates are disclosed used for developing à ÓÔÓ-4À installation intended to test materials and surfaces for friction fatigue when they nominally contact along the straight line. Methods and results of the kinematic analysis of different alternatives of structural designs of the drive rotating the basic components of the installation are described.
Gilavdary I.Z., Rusak A.A.
Measurement of friction forces by a method approximating of envelope curve. pp. 424--432
Summary: The simple and precise method of measuring of forces and friction coefficients is offered on the basis of recording decadent vibration amplitudes of a compound pendulum. This method does not require amplitudes measuring. It allows to install dependence of a frictional force on velocity. Dynamics of a pendulum with a ball bearing is explored. The results of a force measuring of a rolling friction are given. The error estimation of a method is given.
Simdyankin A.A., Krivopalov Yu.V.
Studies of wear resistance of parts with multilayered structures. pp. 433--437
Summary: The process of abrasive wear of steel specimens (steel 40) with longitudinal and transverse interlayers of non-ferrous metals (zinc, copper) and alloys (brass Ë79, Ë63, duralumin D16) has been studied using the methods of scanning electron microscopy and X-ray phase analysis. The combination of the basic metal with an auxiliary layer (brass Ë79) has been determined as best capable to promote wear resistance. The temperature in the zone of friction has been estimated based on the spinel ZnFe2O4 which would appear in the process of friction. It has been established that the transfer layer of the non-ferrous metal (the alloy) appearing on the surface of the basic metal explains better wear resistance of the specimens. The thickness of the layer has been determined.
Marchenko E.A.
Mechanism of wear of molybdenum diselenide. pp. 438--443
Summary: The texture of molybdenum diselenide films coating the friction contact has been studied. The periodicity has been established with which they are textured on the basic plane when they appear and disintegrate.
Chaus A.S.
Features of wear of tools from cast and rolled high-speed in the process of milling. pp. 444--450
Summary: The results of indistrual tests of wear resistance of shaped mills from cast and rolled high-speed P6M5 steel are shown. A relationship has been established between the structural features, the pattern of wear and the durability of the tools. Electron microscopic studies of microhardness have revealed a typically weaker abrasive and adhesive wear and a stronger resistance of the material to plastic deformation.
Gao Jintang, Fen Dapen
Role of lubricating additives in alloy coating withstanding high temperature. pp. 451--458
Summary: Lubricating coatings of Ni-based high temperature alloy were made on a stainless steel substrate (1Cr18Ni9Ti) by flame spray method. Friction and wear of the coatings were measured on pin/disk tester at different temperatures: 25, 200, 400, 600 °C in air separately. Role of Lubricating additives (CaF2/BaF2 eutectic, PbO and Â2Î3) in the coatings were studied as robbing with stainless steel (1Gr18Ni9Ti). It was found that coating including CaF2/BaF2 of amount 25 wt.% had lowest friction and wear. Better tribological property of the coating were just begun to appear at temperature 600 °C as adding PbO into coating including CaF2/BaF2. However, tribological property of coating was obviously improved in above temperature range in case of adding Â2Î3 into the coating. Then, state variation and distribution of some elements on rubbed surfaces were observed with X-photoelectron spectroscope (XPS) and electron probe niicroanalyzer (EPMA) in order to explaining lubrication mechanism of the coating at high temperature condition.
PEOPLES OF SCIENCE
Pogosyan Albert Knyazevich (60 years since birthday). pp. 459--460
CONFERENCE CALENDAR. p. 460
/ Publications / Scientific Journals / Back to Top of Page
Designed and maintained by Dr. Nikolai N. Kostyukovich. Last updated: December 19, 2000
Created with assistance of Dr. Ignatii I. Korsak
Copyright © 2000 The National Academy of Sciences of Belarus
Copyright © 2000 The V.A.Biely Institute of Mechanics of Metal-Polymer Systems
