2_2012_sen_6

Title of the article

ABOUT FULL FATIGUE CURVE
Authors

Sosnovskiy L.A., Doctor of Technical Sciences, Professor, Professor of the Department "Structural Mechanics", Belarusian State University of Transport, Gomel, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.
Taranova E.S., Graduate Student of the Belarusian State University of Transport, Gomel, Republic of Belarus
Turin S.A., Leading Specialist, Laboratory of Wear-Fatigue Tests, RUP "Gomselmash", Gomel, Republic of Belarus
In the section DYNAMICS DURABILITY OF VEHICLES AND STRUCTURES
Year 2012 Issue 2 Pages 41-49
Type of article RAR Index UDK 620.178.3 Index BBK  
Abstract

The review is given and methods of a schematization of full fatigue curve on base to 10 7 cycles and to 10 9 cycles are analysed. It is shown that the question on its construction is debatable. For experimental check the generalised schematization of full fatigue curve offered in work [17] is accepted. In article the basic methodical principles of carrying out of correct fatigue tests (in a wide range of change of durability) are formulated. Their realisation has led to construction of the generalised curve consisting of 4 sites: quasistatic (I), smallcyclic (II), multicyclic (III) and high-resource (IV) fatigue. In work the analysis of the received results is given. In particular, it is shown that approximation of sites by the known sedate equation states a comprehensible estimation of fatigue durability. It is offered to characterise system of key parametres of a limiting condition two numbers (σ lim (N σlim)) which define as value of fatigue strength (σ lim) for this site, and durability (N σlim) at which it is reached.
Keywords

mechanical, quasi-static, low cycle, multicyclic, high-resource fatigue, complete fatigue curve, sample, limit of endurance, durability (number of cycles to failure)
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Bibliography
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  • Sosnovskij L.A., Mahutov N.A. O polnoj krivoj ustalosti [On the complete fatigue curve]. Zavodskaja laboratorija. Diagnostika materialov [Factory laboratory. Diagnosis materials], 1995, no. 5, pp. 33-34.
2_2012_sen_5

Title of the article

DEFINITION OF THE PARAMETERS OF THE SHOCK PULSE IN THE SPUR GEARING, TAKING INTO ACCOUNT THE ELASTICITY OF SHAFTS AND BEARINGS
Authors

Ishin N.N., Candidate of Technical Science, Associate Professor, Deputy Director of the STC "Mining equipment", Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus

Goman A.M., Candidate of Technical Sciences, Associate Professor, Head of the Department "Dynamic Analysis and Vibration Diagnostics of Machines", Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, 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.

Skorokhodov A.S., Candidate of Technical Sciences, Leading Researcher, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus
In the section MECHANICS OF MOBILE MACHINES
Year 2012 Issue 2 Pages 37-40
Type of article RAR Index UDK 621.833 Index BBK  
Abstract

This paper investigates the effect of elastic shafts and bearings on the parameters of the shock pulse in the mesh spur gears. It is possible to reduce the error in determining the amplitude of the shock pulse from 24.4 % to 8.34 %. The accuracy of the timing of impact has not changed.
Keywords

shock pulse, pulse amplitude, pulse shape, time of impact, spur gears, elastic shafts, bearings, plain bearings
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Bibliography
  • Pavlov V.B. Akusticheskaja diagnostika mehanizmov [Acoustic diagnostics of mechanisms]. Moscow, Mashinostroenie, 1971. 224 p.
  • Ishin N.N., Goman A.M., Skorohodov A.S. Issledovanie udarnogo vzaimodejstvija prjamozubyh zubchatyh koljos primenitel'no k zadacham vibrodiagnostiki. Postanovka zadachi, vybor dinamicheskoj modeli, vyvod differencial'nyh uravnenij udara [Investigation of shock interaction of spur gears in relation to the problems of vibration diagnostics. Statement of the problem, choice of dynamic model, the output of differential equations strike]. Vesci NAN Belarusi. Cer. fiz.-tjehn. Navuk [News of the NAS of Belarus. Physical and technical sciences], 2011, no. 3, pp. 41-46.
  • Ishin N.N., Goman A.M., Skorohodov A.S. Issledovanie udarnogo vzaimodejstvija prjamozubyh zubchatyh koljos primenitel'no k zadacham vibrodiagnostiki. Opredelenie parametrov udarnogo impul'sa v zubchatom zaceplenii prjamozubyh cilindricheskih zubchatyh koles [Investigation of shock interaction of spur gears in relation to the problems of vibration diagnostics. Defining the parameters of the shock pulse in gearing of spur gears]. Vesci NAN Belarusi. Cer. fiz.-tjehn. navuk [News of the NAS of Belarus. Physical and technical sciences], 2012, no. 1, pp. 58-63.
  • Ishin N.N., Goman A.M., Skorohodov A.S. Issledovanie parametrov udarnogo impul'sa v zubchatom zaceplenii prjamozubyh cilindricheskih zubchatyh koles [Investigation of the parameters of the shock pulse in the spur gears gearing]. Mehanika mashin, mehanizmov i materialov [Mechanics of machines, mechanisms and materials], 2011, no. 3, pp. 19-23.
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  • Berestnev O.V., Goman A.M., Ishin N.N. Analiticheskie metody mehaniki v dinamike privodov [Analytical methods of mechanics in dynamics of drives]. Minsk, Navuka i tjehnika, 1992. 238 p.
  • Abramov B.M. Kolebanija prjamozubyh zubchatyh koles [Fluctuations of spur gears]. Harkov, HGU, 1968. 175 p.
2_2012_sen_3

Title of the article

AUTOMATIC TRANSMISSION SIMULATION MODEL IN THE TEST SET
Authors

Mikhailau V.V., Candidate of Technical Sciences, Associate Professor, Head of the Department of Resource and Functional Design Methods, STC “Mining equipment”, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.

Basalaev V. N., Senior Researcher of the Department of Methods of Resource and Functional design STC "Mining Equipment", Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus

Snitkov A.G., Junior Researcher, Department of the Methods of Resource-Functional Design, STC “Mining equipment”, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus

Sorochan V.M., Head of the Sector of Methods of Kinematic and Dynamic Analysis, STC "Mining equipment", Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus
In the section MECHANICS OF MOBILE MACHINES
Year 2012 Issue 2 Pages 22-29
Type of article RAR Index UDK 621.85:519.876.5 Index BBK  
Abstract

The paper recommended sequence of possible safe combinations of virtual and real nodes for testing automatic transmissions at different stages. It describes a mathematical model for automatic hydromechanical transmission designed to work together with a single programmed controller. Examples of the simulation are shown. The main components of the complex are designed to operate with MatLab/Simulink. Loading modes of transmission and the most mobile machines combines the task of technological and transport resistances backgrounds. The operating cycle consists of moving off, acceleration, gear, performance of technological and transport operations. The virtual model is used for testing aims for programmed controllers to check them and to improve gear - shifting algorithm.
Keywords

mathematical model, automatic transmission, control system, electronic control unit, MatLab/Simulink, modeling, gearshift, estimates
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Bibliography
  • Mihajlov V.V., Basalaev V.N., Karpyza S.A. Povyshenie jeffektivnosti samohodnyh pogruzchikov putem avtomatizacii upravlenija transmissiej i vybora racional'nyh momentov perekljuchenija [Improving the efficiency of self-propelled trucks by automating management of transmission and switching times of rational choice]. Sbornik nauchyh trudov Mezhdunar. nauch.-tehnich. konf. “Innovacii v mashinostroenii” i VI Mezhdunar. simpoz. po tribofatike MSTF-2010 “Mehanika – mashinostroeniju” [Proc. Int. Sci.-Tech. Conf. “Innovations in mechanical engineering” and VI Int. Symp. on tribo-fatigue MSTF-2010 “Mechanics – mechanical engineering”]. Minsk, 2010, pp. 176-180.
  • Haj-Fraj A., Pfeiffer F.Optimal control of gear shift operations in automatic transmissions. Journal of the Franklin Institute 338 (2001), pp. 371-390.
  • Algin V.B. Shematizacija i raschet mobil'noj mashiny kak mnogomassovoj sistemy. Reguljarnye mehanicheskie sistemy [Schematization and calculation of mobile machine presented as multibody system. regular mechanical systems]. Mehanika mashin, mehanizmov i materialov [Mechanics of machines, mechanisms and materials], 2012, no. 1(18), pp. 6-16.
  • Basalaev V.N., Kovalenko A.V. Issledovanie processa perekljuchenija peredach pod nagruzkoj i optimizacija upravlenija frikcionnymi muftami mehanicheskoj transmissii [Investigation of the gearshift process under load and optimization controlling the friction clutches of mechanical transmission]. Mehanika mashin, mehanizmov i materialov [Mechanics of machines, mechanisms and materials], 2011, no. 2(15), pp. 2-32.
  • Keel Т. Test component reuse spurs increased development efficiency and quality. Available at: http://www.sae.org/mags/sohe/10522.
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  • Grishkevich A.I. [et al.]. Avtomobili: Konstrukcija, konstruirovanie i raschet. Transmissija: ucheb. posobie dlja spec. “Avtomobili i traktory” [Cars: Design, construction and calculation. Transmission: "Automobiles and tractors"]. Minsk, Vysh. shk., 1985. 240 p.
2_2012_sen_4

Title of the article

MATHEMATICAL MODELING OF ELECTRO-HYDRAULIC PRESSURE REGULATOR
Authors

Strok E.Ja., Candidate of Technical Sciences, Head of the Laboratory of Electrohydraulic Systems, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus

Belchik L.D., Candidate of Technical Sciences, Associate Professor, Leading Researcher, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus

Lazarovich V.V., Mechanical Engineering, Laboratory of Electrohydraulic Control Systems, STC "Autotractor Electronics and Electrical Engineering", Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus

Nekrashevich K.Ja., Design Engineer UKER-1 RUp "Minsk Tractor Works", Minsk, Republic of Belarus
In the section MECHANICS OF MOBILE MACHINES
Year 2012 Issue 2 Pages 32-36
Type of article RAR Index UDK 681.532.6 Index BBK  
Abstract

In the article the questions of abstract synthesis of electro-hydraulic pressure control system are shown. The regulator has to be used as a control part of automatic transmission. The modeling results such as work flow and pressure values are presented.
Keywords

electrohydraulic pressure regulator, control and executive level, hydromechanical transmission, mathematical modeling, numerical simulation
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Bibliography
  • Kirillov A.A., Vasil'ev A.S. Vybor proporcional'nogo redukcionnogo klapana dlja jelektrogidravlicheskoj sistemy upravlenija traktorom [Choice of proportional pressure reducing valve for electrohydraulic control system of a tractor]. Stroit. i dorozhnye mashiny [Build. and road machines], 2008, no. 3, pp. 29-32.
  • Reichert M. Entwicklung einer piezobetriebener Vorsteuerstufe zum Aufbau hochdynamischer hydraulischer Ventile, 1. Rexroth Doktoranden Kolloquium, 2005.
  • Zarubin V.S. Matematicheskoe modelirovanie v tehnike [Mathematical modeling in technology]. Moscow, Izd-vo MGTU im. M.Je. Baumana, 2001. 495 p.
2_2012_sen_2

Title of the article

FREIGHT RAILWAY TRAIN OF MODULAR TYPE
Authors

Alexandrov I.K., Doctor of Technical Sciences, Professor, Head of the Department "Safety and Industrial Ecology", Vologda State University, Volgograd, Russia, 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.
In the section MECHANICS OF MOBILE MACHINES
Year 2012 Issue 2 Pages 14-19
Type of article RAR Index UDK 629.4 Index BBK  
Abstract

This paper gives theoretical substantiation for the effectiveness of replacing the traditional scheme of freight train, representing a chain of cars all successively connected to the locomotive by a modular scheme, where the rolling stock is assembled of several independent blocks (modules) connected in parallel to the contact electrical network consisting of a traction (motor) car, joined by several standard (non-drive) cars.
Keywords

rolling stock, modular design, kinematic model, energy-economic analysis, block-scheme
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Bibliography
  • Aleksandrov I.K. Opredelenie poter' v mehanicheskih transmissijah s uchetom nagruzochnyh rezhimov [Determination of loss in mechanical transmissions during load mode]. Tehnika v sel'skom hozjajstve [Technology in agriculture], 1999, no. 1, pp. 20-24.
  • Aleksandrov I.K. Jenergeticheskaja nejeffektivnost' razvetvlennyh kinematicheskih cepej [Energy inefficiency of branched kinematic chains]. Vestn. mashinostroenija [Journal of mechanical engineering], 2010, no. 4, pp. 20-28.
  • Aleksandrov I.K. Opredelenie poter' v kinematicheskih parah i mehanicheskih transmissijah na osnove zakona Amontona-Kulona [Determination of loss in kinematic pairs and manual transmissions based on the law Amonton-Coulomb]. Vestn. mashinostroenija [Journal of mechanical engineering], 2010, no. 5, pp. 8-15.
  • Aleksandrov I.K. Determining the Losses in Kinematic Pairs and Mechanical Transmissions on the Basis of the Amontons Coulomb. Russian Engineering Research, 2010, vol. 30, no. 5, pp. 435-441.
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  • Aleksandrov I.K. Jenergeticheskij analiz mehanizmov i mashin. Teoreticheskoe i jeksperimental'noe obosnovanie principov issledovanija i opredelenija jenergeticheskih poter' v mehanizmah i mashinah: monografija [Energy analysis of mechanisms and machines. Theoretical and experimental study of the principles of investigation and determination of the energy loss mechanisms and machines: monograph]. Vologda, VoGTU, 2011. 244 p.
  • Aleksandrov I.K. Harakternaja metodologicheskaja oshibka pri analize frikcionnyh sil v pare trenija [Typical methodological error in the analysis of friction forces in friction pair]. Mehanika mashin, mehanizmov i materialov [Mechanics of machines, mechanisms and materials], 2011, no. 3, pp. 59-63.

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