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MECHANICS OF MOBILE MACHINES |
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Vityaz P.A., Basiniuk V.L., Mardosevich E.I., Myshkin N.K., Grigorieva.YA., ZAVEDEEV V.V., Lomako V.G., Kudrytski V.G.
DESIGN PECULIARITIES AND APPLICATION OF DIRECT-ACTION DRIVE SYSTEMS IN ON-BOARD APPARATUSES OF SPACE EQUIPMENT
Problems of engineering aerospace equipment units operating in extreme temperature conditions are analyzed. Engineering approaches to the calculation of parameters of mating parts made of materials with different thermal-expansion coefficients are suggested. It is shown that design solutions based on using of resilient flexible elements allow to maintain minimum positive and negative allowances in matings in a wide range of exterior temperature variation.
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5 |
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Algin V.B., Tretsiak D.V., Drobyshevskaya O.V.
DRIVER'S ASSISTANT CONCEPTION FOR CRITICAL SITUATIONS AND ITS REALIZATION FOR VEHICLE EMERGENCY BRAKING
Driver's assistant conception is presented for critical situations, which is based on usage of dynamic interaction of different vehicle subsystems. Brake Assistant classification is presented, which covers existing and perspective directions of brake assistant development. Conception of the Brake-Transmission Master Assistance (BTMA) is suggested. This assistant is based on the transmission gears switching «down» and usage of its frictional elements. This allows unloading the basic brake system. Thus, temperature heating, brake pressure levels, hysteresis losses are decreased. As a result the higher brake efficiency is secured.
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11
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Mikhailau V.V., Salodkaya M.G.
VIBRATION EFFECTS FORMATION AND CAR LOADS CALCULATIONS IN CONTACT BETWEEN OF WHEELS AND ROAD SURFACE IRREGULARITIES
The paper describes a mathematical model to estimate the parameters of vertical automobile body movements and contact zone loads arrived between of the car with the road surface though index IRI (International Roughness Index). Statistical IRI characteristics provided the basis for creating a module generates random in amplitude and length of sinusoidal irregularities. This module operates with a satisfactory accuracy of the mathematical model, which includes the original module of car tire and suspension «smoothing».
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18 |
Liakhov S.V.
MODERN STATE OF THE INTERNATIONAL STANDARDS TO EVALUATE ELECTRONIC STABILITY CONTROL SYSTEMS OF VEHICLES
In this paper, we analyze the development of research and test methods as well as existing international norms and standards used as a framework for further improvement of the electronic stability control system of motor vehicles.
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24 |
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ENGINEERING COMPONENTS |
Antoniuk V.E., Mariev P.L., Pawlowski V.J.
FEATURES OF DESIGN AND PRODUCTION OF PLANETARY GEARS IN THE BELARUS MOBILE MACHINES
The basic requirements to the planetary transfers, used in heavy dumpers, lorries, tractors and other machines made in Belarus are formulated. Ways of improvement of quality and perfection of manufacture of planetary transfers are planned.
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29 |
Iishin N.N., Goman A.M., Skorokhodov A.S.
RESONANCE CONDITIONS OF GEARINGS. PART II: EXPERIMENTAL RESEARCH
Results of experimental research of gearing resonance modes are considered. Serial specimens used in machine building were tested at universal stand of the open force contour. The resonance phenomena in gearing, accompanied disconnection of teeth and sharp increment of the dynamic loading in a toothed engagement, have been fixed at frequency of rotation of gear in two times less values of rotation frequency, according for main resonance. Signs of resonance observed also on frequencies, equal 1/3 and 1/4 values of main resonance.
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37 |
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DYNAMICS DURABILITY OF VEHICLES AND STRUCTURES |
Litvinau E.A.
THE SIX DEGREE OF FREEDOM PARALLEL ACTUATING MECHANISMS COMPUTER SIMULATION
The six degree of freedom parallel mechanism of specified configuration has been considered. The approaches for carrying out the parallel mechanism kinematic and dynamic analysis with the help of computer simulation techniques are proposed. The results of the workspaces construction are presented. The parallel mechanism dynamic model is developed in MATLAB/Simulink environment.
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45 |
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MECHANICS OF DEFORMED SOLIDS |
Mikhasev G.I., Korobko E.V., Novikova Z.A.
ON SUPPRESSION OF VIBRATIONS OF THREE-LAYERED BEAM CONTAINING MAGNETORHEOLOGICAL COMPOSITE
The influence of the magnetic field on free and forced, flexural and shear vibrations of a three-layered composite beam containing interlayer magnetorheological core is studied. By using the multiple-scale method with respect to time, non-stationary forms of vibrations with the frequency and decrement varying in the time-scale being commensurable with the time of reaction of the magnetorheological composite on the magnetic field signal is constructed.
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49 |
Talibli L.H., Agayev G.N.
DEFORMATION OF PHYSICALLY NONLINEAR VISCOELASTIC ANNULAR PLATES WITH LOADING INTERNAL AND EXTERNAL PRESSURE
Obtained in parametric form, exact analytical expressions for the components of stresses, deformations and displacements arising in physically nonlinear viscoelastic on according to Vladimir Moskvitin mechanically incompressible plate of constant thickness in the cases when 1) an annular plate, the internal and external contours of pressure are applied, 2)infinite plate has the circular hole free from loads, tensile stress is influencing at infinity 3) an infinite plate has a circular hole on the contours whom is under pressure, no stress at infinity. We also consider the special case where the plate material is physically linear viscoelastic material.
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54 |
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TECHNOLOGICAL MECHANICS |
Rudenko S.P.
CALCULATION OF THE RESOURCE OF HIGH-LOADED GEARS CAR TRANSMISSIONS TAKING INTO ACCOUNT QUALITY CHEMICAL HEAT HARDENING
Curves of deep contact weariness carburized cylindrical gears depending on size of hardness and quality of a microstructure in the heart of the strengthened layer are presented. The design procedure of the resource provided with resistance of deep contact weariness of active surfaces of teeths carburized gears, based on a hypothesis of summation of fatigue damages is resulted.
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58 |
Mikhlyuk A.I., Belski S.E., Pistchov M.N.
INCREASING DURABILITY OF DRIVING AXLE ELEMENTS OF MAZ AUTOMOBILES BY MEANS OF VARIOUS THERMAL AND CHEMICAL-THERMAL TREATMENT
The paper analyzes conditions and main reasons for destruction of main gear and wheel reduction gear of driving axles in MAZ automobile. A mathematical model of stress of bevel drive teeth has been developed; the reasonability of improving their thermal and chemical-thermal treatment has been proven. The research proposes to replace 20XH3A steel by 60 ÏÏ volumetric-surface hardened steel to be used in bevel gear wheels.
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61 |
Rustamov B.E.
FRACTURE OF BURNING SOLID FUEL WITH GEOMETRICAL IMPERFECTIONS OF BOUNDARY
The plane stationary problem of mechanics of fracture for the solid deformable fuel weakened by any way placed system crack-visible of cavities which surface burns is considered. It is considered, that the boundary of a fuel checker has geometrical imperfections of technological character.
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66 |
Solomakho D.V.
IMPLEMENTATION OF IMITATIONAL STANDARDS FOR THE ANALYSES OF DIMENSIONAL METROLOGY GAUGES PROPERTIES
A problem of complex surfaces' dimensions measurement often arises during dimensional control of machinery parts. The issue relates to the creation of special geometric parameters' measuring instruments procedures their metrological legalization. The approach of simulative measures application as a method of metrological analyses is proposed in the paper.
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70 |
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BIOMECHANICS |
Bosiakov S.M., Yurkevich K.S.
THE ANALYSIS OF STRESSES, ARISING UNDER THE INFLUENCE OF THE CONCENTRATED LOADING, IN THE FIELD OF CONTACT OF THE PERIODONTIUM TO THE FANG
Normal stresses, tangents stresses along forming and directing to a surface of the periodontal shell arising at action on a fang of concentrated force are defined. The geometrical form of a periodontium is described by the equations of elliptic hyperboloids. Calculations and visualisation of fields of stresses are executed for two abundant clinical cases of action of loading on single-fang premolar and a canine.
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75 |
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Meleeva O.V., Fomin N.A.
BIOMECHANICS OF LASER SPECKLE FIELDS PRODUCED BY PROBING SCATTERING TISSUES IN VIVO
The formation and dynamics of the speckle field pattern by probing 3D nonstationary media with laser beam have been described. The examples of use of the laws of the speckle fields dynamics for bio-tissues monitoring in vivo have been given. The strict mathematical description of the bio speckle fields forming and their dynamic statistics under scattering of the laser radiation by moving have been shown. The formation and dynamics of the speckle field pattern by probing 3D nonstationary media with laser beam have been described. Examples of the use of the laws of the speckle field dynamics, that were applied for physiological monitoring in vivo, have been given. The strict mathematical description of the bio-speckle fields formation and dynamics under scattering of the later radiation on the moving erythrocytes of the biotissue has been adduced. Such description, in a number of cases, requires simple but cumbrous equations. At the same time the knowledge of the analytical dependences of the dynamic speckle fields characteristics for different optic configurations is necessary for the correct processing of specklegrams and building of the blood flow maps of biotissues under study.
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79 |
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INFORMATION RESOURCES |
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Vrazhkin YU.N., Rusan S.V., Stukachou V.N., Lauzhel G.O.
INFORMATION RESOURCE «MECHANICS AND MECHANICAL ENGINEERING IN THE REPUBLIC OF BELARUS» AS A BASIS OF INFORMATION SUPPORT OF INNOVATION DEVELOPMENT MECHANICAL ENGINEERING COMPLEX OF BELARUS
Submitted an electronic information resource «Mechanics and Mechanical Engineering in the Republic of Belarus». Adduces the sources of its formation, the types of documents included, features, functions, specifications and features.
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85 |
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INTELLECTUAL PROPERTY |
OVERVIEW OF INTELLECTUAL PROPERTY OBJECTS OF THE JOINT INSTITUTE OF MECHANICAL ENGINEERING OF NAS OF BELARUS
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91 |
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OUR JUBILEES ARE CELEBRATED |
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STANISLAV ASTAPCHICK (TO THE 75 ANNIVERSARY FROM THE DATE OF A BIRTH) |
95 |
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OLEG BERESTNEV (TO THE 70 ANNIVERSARY FROM THE DATE OF A BIRTH) |
97 |
