Vysotski M.S., Kharytonchyk S.V.

AUTOMOBILE, TRACTOR AND COMBINE ENGINEERING: COMPUTER TECHNOLOGIES IN THE INTEGRATION OF POTENTIAL FOR ACADEMIC AND FIRM SCIENCES

Scientific institutions of the National Academy of Sciences of Belarus have collected the great experience in modern scientific computer technologies for automobile, tractor and agricultural engineering. Using this base authors offer some new ways to improve the interaction between industrial scientific & technical centers and scientific institutions.

10

Algin V.B, Drabyshevskaya O.V., Sorochan V.M., Uspenski A.A.

SCHEMATIZATION AND DYNAMIC ANALYSIS OF MOBILE MACHINE. VARIABLE-STRUCTURE SYSTEMS

Approaches for modeling the complex mechanical systems of mobile machines are discussed. Basic definitions related to schematization and dynamic analyses of mechanical systems are justified. Typical mistakes in schematization and building the mathematical models are analyzed. The technique for modeling the mechanical variable-structure systems is proposed.

16

Valeyev D.Kh., Karabtsev V.S.

THE DESIGN METHOD TO MATCH THE ENGINE CHARACTERISTICS WITH TRANSMISSION PARAMETERS FOR HIGHWAY TRUCK TRAIN

The present publication reveals the design method of matching the engine characteristics with kinematic parameters of transmission with purpose to improve traction properties and fuel efficiency of the highway truck train. The sense of this method is to use the matched multi-parametrical engine characteristic, the engine load applied from road, traction characteristics and the efficiency of truck train. The version of KAMAZ train developed on basis of calculated results and suggestions revealed 15…18% decrease of fuel consumption, as compared with basic model, with higher up to 6…8% travel speed.

25

Chigarev J.V., Shilo I.N., Romaniuk N.N.

THE DYNAMIC LOADING OF THE SOIL FROM THE ACTIVE LOADS OF VEHICLE AND TRACTOR UNITS

The compaction of the soil from the active loads of vehicle and tractor units is considered. The mathematical model of dynamic interference of the «wheeled unit – soil» system allowing for the parameters of the tractor vibration system, the rheological model of the soil and the unevenness of the relief of the base surface which permets to determine the soil density changes from the active leads at the stage of the design is suggested.

29

Yanovskii A.V., German A.A.

AMKODOR JOINT STOCK COMPANY — DYNAMICS OF MODERN PRODUCTION

Amkodor Joint Stock Company is one of the CIS leading producers of road building and construction machinery, utility vehicles, snow clearing machines and airfield sweepers, forestry, farming and other special machinery and attachments. Amkodor produces more than 4000 machines of 90 models and modifications annually. Extensive machinery families and wide range of removable working attachments enable Amkodor's products to be used in different fields of application. Continuous process of reconstruction and technical reequipment allows Amkodor to satisfy the requirements of any customer. The production of in-house attachments has been opened up, such as hydro-mechanical transmissions, driving steering and rigid axles, hydro cylinders, hydraulic control valves, cabs, etc.

35

Cheng Shenghui 1, 2
1 Belarusian National Technical University, Minsk, Belarus;
2 Joint Institute of Mechanical Engineering of National Academy of Sciences of Belarus, Minsk, Belarus.

THE DEVELOPMENT AND FUTURE OUTLOOK OF HEV

Basic concepts of Hybrid Electric Vehicle (HEV) are shown. The main types of HEV systems and their characteristics are presented in the paper, as well as the key technologies applied to HEV, and the current situations are pointed out also. The development and future outlook of HEV are analyzed in this article. The control strategies and software for modeling and simulation of HEV are also introduced briefly.

42

Savchenko V.V.

TRAINING SIMULATOR PREPARATION OF OPERATORS’ IN THE TRANSPORTATION MAN—MACHINE SYSTEMS: NEW FUNCTIONALITIES

The approach, allowing to expand functional and operational opportunities of modern training simulator are being considered. Application of algorithms preventive technological preparation of operators’ in the transportation man—machine systems during training, using bioadaptive animations on the basis of a semantic biofeedback.

48

Assad M.S., Mironov V.N., Penyazkov O.G.

A METHOD OF CALCULATING A TIME-VARYING VOLUME OF COMBUSTION PRODUCTS IN THE CYLINDRICAL CHAMBER

A method of calculating a volume of combustion products when a flame spreads in the closed cylindrical chamber is developed, assuming that the front is spherical for two positions of an ignition source: at the end (central ignition) and cylindrical (side ignition) walls of the combustion chamber. Universal formulas for the volume of combustion products are obtained with regard to the changes in the flame front shape and the combustion chamber geometry allowing a mixture burning rate and a heat release characteristic to be investigated. Based on the analysis of the experimental data, the dependences of the change in the volume of combustion products on time and flame front radius are obtained for fuel—air mixtures with a volume fraction of hydrogen from zero to 14 % at stoichiometry coefficients ?=0.8, 1.

52

Kuzminsky Yu.G., Shilko S.V., Vujn V.I.

THE CALCULATION OF HYDRAULIC CHARACTERISTICS BY IDENTIFICATION OF MODELS OF PUMPS AND STATIONS FOR MAGISTRAL OIL PIPES

Some identification methods of calculation models and approximation of pump parameters for magistral oil pipes as well as the methods of diagnostics and energy efficiency estimation of pumps have been analysed.

58

Avtushenko N.A., Lenevsky G.S.

CALCULATION OF A HYDRODYNAMIC COMPONENT OF BEHAVIOUR OF HEAT-TRANSFER AGENT IN THE MAIN PIPELINES

The design procedure of installation is developed for an estimation of behaviour of heat-transfer agent in the main pipelines, as distributed parameter systems. The description is based on two equations Navie-Stokes and the indissoluble environment equation. The solution is two equations of speed and pressure. At calculation of system of the equations it is based on with use of dependence of density from temperature and pressure and a derivative of pressure on density. Search of the given components is based on temperature of heat-transfer agent in the set point of the pipeline based on a balance equation of heat amount in the pipeline, in view of available thermal losses, properties of the insulating materials.

64

Burya A.I., Afshagova Z.Kh., Kozlov G.V., Lipatov Yu.S.

INFLUENCE OF NANO-ADHESION FOR ELASTICITY MODULUS OF POLYMER NANOCOMPOSITES

There has been shown the existence of nano-adhesion effect in the disperse-filled polymer nanocomposites, which significantly influences the decrease of thermal expansion coefficient and the increase of elasticity modulus. The degree of nanocomposites’ reinforcement has been stated to be influenced by the properties of polymer matrix, nanofiller and the degree of interphase adhesion.

67

Sandomirskii S.G., Sinyakovich Ed.B.

USE OF SUCCESSIVE FORWARD AND SPINNING-BELT MOTION OF MASS BATCHS OF MAIN MACHINE-BUILDING PRODUCTS FOR MAGNETIC CONTROL OF THEIR QUALITY

In the article we analyzed and generalized the principles of magnetic control of the mechanical properties of steel products in motion. The means for raising the sensibility of the control were developed. We report the outcome of application of magnetic non-dectructive testing of motor components at the Minsk motor plant.

70

Schetnikovich K.G.

LAPPING OF BALLS MADE OF HARD-MAGNETIC SINTERED MATERIAL

Construction of the instrument for lapping of the balls between coaxially installed lower drive disk and two rings (internal and external) is described. The internal ring is connected with rotary drive and provided with a conical bevel. The external ring is immovable and provided with ring groove for the balls disposition. During the processing the balls are moved along the ring path formed by four surfaces of the instrument having different velocities. Significant increase of the ball sliding velocity relative to the instrument allows to decrease the contact load on the balls and increase quality of the balls surface. Continuous position change of the instantaneous axis of the balls rotation provides high quality of the processing. Results of experimental investigations of the lapping process applied to the balls made of the hard-magnetic sintered material KC37 are presented.

76

Gubitch L.V., Grivachevsky A.G.

ELECTRONIC MODEL OF PRODUCT IS THE BASIS OF CURRENT MANUFACTURING

The role of electronic 3D model of product in current manufacturing is considered. The aspect of a model use by specialists (designers, engineers, technologists) are given.

80

Zhuravkov M.A., Pleskachevsky Yu.M.

DEFORMATION AND DESTRUCTION OF ELASTIC RIGID ENVIRONMENTS AT INFLUENCE OF WAVES OF DEFORMATIONS

There is shown, that force or kinematics influence on elastic deformable environments causing in last wave of deformations, can have a wide range of consequences, down to occurrence of destruction zones of a material in paper. Thus in situations of occurrence of waves of deformations of the large amplitude under certain conditions can result joint or periodic influence of «insignificant» loadings. The examples of the solution of model tasks are given in paper. The prospects of process of controlled influence of waves of deformations on a condition of rigid environments and creation of applied technologies in various areas of the modern mechanics are described.

85

Audoshka I.V., Mikhasev G.I.

EFFECT OF VISCO-ELASTICITY OF AN ORTHOTROPIC ARTERIAL WALL ON PULSE-WAVE PROPAGATION

The problem of harmonic pressure wave propagation through a viscous fluid contained in a thin visco-elastic orthotropic tube is considered. To take into account visco-elasticity of the tube the linear visco-elasticity model is used. The computations have shown that taking into account the tube visco-elasticity leads to decrease of the phase velocity and transmission per wavelength.

91