Title of the article

THE ANALYSIS OF STRUCTURES AND METHODS OF REDUCING LOADING OF CLEANING SYSTEM’S DRIVES OF COMBINE HARVESTERS

Authors

Boyko L.I., Doctor of Technical Sciences, Chief Scientific Officer of the Department of Tractors and Agricultural Machinery, STC "Mechanical Engineering", Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus

Klimovich O.V., Junior Researcher at the Department of Tractors and Agricultural Machinery, STC "Mechanical engineering", Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus

In the section TECHNICAL INFORMATION
Year 2011 Issue 3 Pages 74-78
Type of article RAR Index UDK 621.82 Index BBK  
Abstract

The article considers various designs of grain cleaning system's drives of combine harvesters, outlines ways to reduce their loading

Keywords

cleaning system, combine harvester, loading, drives, inertial load

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Title of the article

ANALYSIS OF HYDROMECHANICAL TRANSMISSION FRICTION CLUTCH FAILURES AND WAYS TO REDUCE THEM

Authors

Shapovalova O.A., Design Engineer of JSC "Belarusian Autoworks", Zhodino, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.

Leshok A.V., Candidate of Technical Sciences, Deputy Chief Technologist PRUE "Molodechno Plant of Powder Metallurgy", Molodechno, Republic of Belarus

In the section TECHNICAL INFORMATION
Year 2011 Issue 3 Pages 67-73
Type of article RAR Index UDK 629.3 Index BBK  
Abstract

The author determines the main failures of BELAZ hydromechanical transmission; describes the design of hydromechanical transmission friction clutches as well as the types and causes of their failures. The author also considers the ways to solve the problem of increasing of friction clutches operating life by the manufacturer.

Keywords

clutch, hydromechanical transmission, failures of clutches, friction discs

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Title of the article

CHARACTERISTIC METHODOLOGICAL ERROR IN ANALYSING THE TOTAL FRICTIONAL FORCES IN THE FRICTION PAIR

Authors

Alexandrov I.K., Doctor of Technical Sciences, Professor of the Department "Automobiles and Tractors", Head of the Department "Safety and Industrial Ecology", Vologda State Technical University, Vologda, Russia, This email address is being protected from spambots. You need JavaScript enabled to view it.

In the section MECHANICS OF TRIBO-FATIGUE SYSTEMS
Year 2011 Issue 3 Pages 59-63
Type of article RAR Index UDK 629.113.62235; 621.85 Index BBK  
Abstract

In accordance with the classical courses "The Theory of Machinery and Machines" and "Machine Parts" for the purpose of simplifying engineering calculations it is adopted to determine total frictional losses in frictional pair without taking into account molecular coupling forces. In the paper by the examples of the existing experimental researches it is show, that the application of such simplified calculation model contradicts the known Amontons-Coulomb Law and results in erroneous representation of the experimental results.

Keywords

amonton-coulomb law, friction pair, friction coefficient, forces of molecular cohesion

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Bibliography
  • GOST 1448-2004. Tribofatika. Metody iznosoustalostnyh ispytanij. Ispytanija na frikcionno-mehanicheskuju ustalost' [State Standard 1448-2004. Tribo-fatigue. Methods of wear-fatigue tests. Tests for friction-mechanical fatigue]. Minsk, GOSSTANDART, 2004. 14 p.
  • Sosnovskij L.A. Mehanika iznosoustalostnogo povrezhdenija: monografija [Mechanics of wear fatigue damage: monograph]. Gomel', BelGUT, 2007. 434 p.
  • Elovoj O.M., Bogdanovich A.V. Lokal'nye harakteristiki iznosoustalostnogo povrezhdenija i soprotivlenie razrusheniju silovyh sistem [Local characteristics of wear fatigue damage and fracture resistance of power systems]. Gornaja mehanika [Rock mechanics], 2007, no. 1, pp. 76-83.
  • Sosnovskij L.A., Bogdanovich A.V., Elovoj O.M. Lokal'nye povrezhdenija i dolgovechnost' silovyh sistem mobil'nyh mashin [Local damages and durability of active systems of mobile machines]. Mehanika mashin, mehanizmov i materialov [Mechanics of machines, mechanisms and materials], 2008, no. 1 (2), pp. 24-29.
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Title of the article

SIMULATION OF THE ELASTIC INTERACTION BETWEEN THE PROBE OF ATOMIC FORCE MICROSCOPE AND THE CELL

Authors

Drozd E.S., Junior Researcher of the Laboratory of Nanoprocesses and Technologies, Institute of Heat and Mass Transfer n.a. A.V. Lykov of the NAS of Belarus, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.

Pronkevich S.A., Senior Lecturer of the Belarusian National Technical University, Minsk, Republic of Belarus

Chizhik S.A., Corresponding Member of the National Academy of Sciences of Belarus, Doctor of Technical Sciences, Professor, Chief Scientific Secretary of the NAS of Belarus, Minsk, Republic of Belarus
In the section BIOMECHANICS
Year 2011 Issue 3 Pages 64-66
Type of article RAR Index UDK 519.6:539.32+576.52.086.3 Index BBK  
Abstract

The numerical simulation of the interaction between the probe of atomic force microscope and biological cell using finite element contact model was done. The magnitudes of the stress and strain arising during the indentation of the probe into the red blood cells were defined. The cell was considered as a homogeneous elastic body and as hyperelastic body, consisting of the shell and the internal contents. The results of simulation were compared with the analytical solution of the Hertz contact problem.

Keywords

probe of atomic and force microscope, cell, finite element method

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Title of the article

EXPERIMENTAL RESEARCH OF WEAR-FATIGUE DAMAGE FOR MECHANO-SLIDING FATIGUE OF THE 0,45% CARBON STEEL-SILUMINUM ACTIVE SYSTEM

Authors

Bogdanovich A.V., Doctor of Technical Sciences, Professor of the Department "Technical Mechanics", Director of Lida College of Educational Establishment "Grodno State University n.a. Ya. Kupala", Lida, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

Lis I.N., Teacher of Special Disciplines of Lida College of Educational Establishment "Grodno State University n.a. Ya. Kupala", Lida, Republic of Belarus

Elovoi O.M., Candidate of Technical Sciences Senior Fellow at the Office of the Council of Ministers of the Republic of Belarus, Minsk, Republic of Belarus

In the section MECHANICS OF TRIBO-FATIGUE SYSTEMS
Year 2011 Issue 3 Pages 54-58
Type of article RAR Index UDK 539.43 Index BBK  
Abstract

The operation purpose is the experimental research of damage`s regularities for a meta-lto-metal active system at sliding and mechano-sliding fatigue tests. In the report the test technique is given. Experimental values of characteristics of resistance of sliding and mechano-sliding fatigue of an examined active system are received. The tests results analysis is given. New regularities of a back effect for mechano-sliding fatigue of the 0,45% carbon steel-siluminum active systems are found.

Keywords

power system, friction-mechanical fatigue, pie chart of wear, fatigue curve

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Bibliography
  • STB 1448-2004. Tribofatika. Metody iznosoustalostnyh ispytanij. Ispytanija na frikcionno-mehanicheskuju ustalost' [State Standard 1448-2004. Tribo-fatigue. Methods of wear-fatigue tests. Tests for friction-mechanical fatigue]. Minsk: GOSSTANDART, 2004. 14 p.
  • Sosnovskij L.A. Mehanika iznosoustalostnogo povrezhdenija: monografija [Mechanics of wear fatigue damage: monograph]. Gomel, BelGUT, 2007. 434 p.
  • Elovoj O.M., Bogdanovich A.V. Lokal'nye harakteristiki iznosoustalostnogo povrezhdenija i soprotivlenie razrusheniju silovyh sistem [Local characteristics of wear fatigue damage and resistance of fracture of power systems]. Gornaja mehanika [Rock mechanics], 2007, no. 1, pp. 76-83.
  • Sosnovskij L.A., Bogdanovich A.V., Elovoj O.M. Lokal'nye povrezhdenija i dolgovechnost' silovyh sistem mobil'nyh mashin [Local damages and durability of active systems of mobile machines]. Mehanika mashin, mehanizmov i materialov [Mechanics of machines, mechanisms and materials], 2008, no. 1 (2), pp. 24-29.
  • Kragelskij I.V., Dobychin M.N., Kombalov V.S. Osnovy raschetov na trenie i iznos [Basis of calculation for friction and wear]. Moscow, Mashinostroenie, 1977. 526 p.
  • Kogaev V.P., Drozdov Ju.N. Prochnost' i iznosostojkost' detalej mashin [Strength and durability of machine parts]. Moscow, Vyssh. shk., 1991. 319 p.
  • Bogdanovich P.N., Prushak V.Ja. Trenie i iznos v mashinah [Friction and wear in machines]. Minsk, Vysh. shk., 1999. 374 p.
  • Sosnovskij L.A., Bogdanovich A.V. Teorija nakoplenija iznosoustalostnyh povrezhdenij [Theory of fatigue damage accumulation wear]. Gomel, NPO "TRIBOFATIKA", 2000. 60 p.
  • Bogdanovich A.V. Prognozirovanie predel'nyh sostojanij silovyh sistem [Prediction of limit states of power systems]. Grodno, GrGU, 2008. 371 p.