|
Vysotski M.S., Pozhitok V.N., Kochetov S.I., Kharytonchyk S.V.
MODULAR PRINCIPLES REALIZATION FOR PERSPECTIVE HIGHWAY TRUCKS
Means of increasing perspective highway trucks cost-performance with the aid of the modular principles under their designing are shown.
|
5 |
|
Ispenkov S.A., Rakitsky A.A.
A FORMING OF DUMP TRUCKS CHASSIS POWER LOADINGS
The experimental determination problems of loads in BELAZ mining dump truck chassis are considered. Statistic analysis of field test data is carried out. Linear dependence of the suspension lateral forces is estimated and experiment-calculated method of the force assessment in the central spherical joint of front and rear conventional suspensions is proposed.
|
9 |
|
Pirch A.I., Algin V.B., Sabaleuski A.K.
DETERMINATION OF OUTPUT CHARACTERISTIC FOR HYBRID POWER UNIT OF A VEHICLE
The scheme and the basic operations of a hybrid vehicle are presented. Technique of making output characteristic is developed for full-throttle acceleration modes: with charged and discharged battery. Results may be used for further analysis of traction-speed and fuel-economy parameters of a vehicle with à hybrid power unit.
|
14 |
|
Yakubovich A.I., Tarasenko V.E.
NON7STATIONARY TEMPERATURE MODE OF THE DIESEL ENGINE
The factors causing an overheat of a tractor diesel engine are considered. Process of heat exchange in system of cooling is analysed at a non-stationary temperature mode. It is offered to estimate an overheat of a diesel engine in factor of an overheat. The equation is presented, allowing to define an ambient temperature at which the stationary temperature mode of a diesel engine is provided. A number of the constructive decision promoting increase of a system effectiveness of cooling is offered.
|
19 |
|
Zhylevich M.I., Shevchenko V.S.
MATEMATICS MODELLING OF DYNAMICS OF VOLUME HYDROTRANSFER
The mathematical model for research of dynamic characteristics of volume hydrotransfer taking into account features of course of internal processes in hydrodrive elements is offered. The model allows to analyze influence of parametres of a drive and properties of a working liquid on dynamics of volume hydrotransfer and to choose their rational values.
|
24 |
|
Bakhanovich A.G, Sinkevich J.V., Bakhanovich I.G, Yankovski I.N., Lebedev V.J.
TRIBOTECHNICAL CHARACTERISTICS AND LONGEVITY OF TOOTHED BELT DRIVES
The major factors defining longevity of a toothed belt drive are established. Results computer certainly-element simulation of the is intense-deformed condition of toothed belt linkage depending on tribological performances of elements of transmission are resulted. Experimentally methods of lowering of abrasion in contact of toothed are approved.
|
27 |
|
Strock E.Y., Belchik L.D., Nikiforov V.G., Zinchenko V.N.
THE ULTRASOUND METHODS OF DISTANCE MEASUREMENT FOR WORKING EQUIPMENT CONTROL SYSTEM OF MOBILE MACHINES
Development of plough control system using ultrasound equipment of distance measurement is presented. The experimental results confirm the efficiency of tractor performance with contactless sensor of soil profile copying.
|
31 |
|
Senko V.I., Pastuhov I.F., Pastuhov M.I.
ESTIMATION OF PARAMETERS OF RELIABILITY OF LATERAL FRAMES AND OVER SPRING BEAMS OF CARRIAGES OF FREIGHT CARS
Questions of an estimation tensely - deformed conditions of lateral frames of carriages such as ÖÍÈÈ-Õ3 and models 18-100 of freight cars are considered. It is shown, that destruction of frames from normalized operational loadings is improbable. Destruction of them is possible only in extreme conditions when in operation there are critical loadings, and deterioration an aperture of axle box achieves a limiting condition at which a skew of wheel pairs causes additional growth of pressure in dangerous sections and when in zones of high pressure of frames foundry defects get. Therefore processes of destruction of lateral frames casual also arise suddenly from an adverse combination of the specified factors. On materials of statistical distribution of damages of lateral frames and over spring beams probabilities of non-failure operation of details which testify are found, that at service life in 35 years reliability of details is sufficient and makes P (t=35)=0,9976.
|
34 |
|
Tretsiak D.V.
RESEARCH IN SELF-BOOSTING DISC BRAKES FOR HEAVY VEHICLES
Development of the analytical and practical scientific decisions is considered in the paper to increase the efficiency of automotive brake systems due to reduction of hysteresis losses and creation of perspective disk brake designs with self-boosting. The modification of disc brake design with self-boosting is proposed for heavy vehicles. The simulation models of the conventional disc brake and brake with self-boosting are developed using MSC.ADAMS software and virtual simulation of these models is carried out.
|
39 |
|
Zuk A.A., Naturieva M.K.
HYDRAULIC DRIVE FOR CUTTING FEED OF HORIZONTAL POWER-PRODUCING BED PLATES OF METAL-CUTTING EQUIPMENT
In article progressive schemes of a modern hydraulic drive of horizontal power knots of metal-cutting machine tools are considered; the review of the basic schemes developed with the assistance of scientists of Joint institute of mechanical engineering of the National academy of sciences of Belarus and successfully embody in designs of a hydraulic drive of special design bureau UP «ÌZAL of P.M. Masherova» is presented.
|
44 |
|
Nikonova T.V., Kuntsevich S.P., Mikhasev G.I.
ON BIFURCATION OF THIN CORRUGATED SHELL WITH AN ELASTIC FILLER UNDER ACTION OF NON-UNIFORM HYDROSTATIC PRESSURE
The problem of buckling of a thin corrugated shell with elastic filler under action of the non-uniform hydrostatic pressure is considered. The influence of the elastic filler is taken into account as the additional pressure within the framework of Winkler’s model. The semimoment equations of the thin elastic shell theory are assumed as the governing ones. The rigid clamped conditions are considered at the edges of the shell. Assuming that the hydrostatic pressure depends upon the circumferential co-ordinate, solutions of the governing equations are constructed in the form of functions decaying far from some generator on the shell surface. Using the complex WKB-method, the boundary-value problem is reduced to the sequence of the one-dimensional boundary-value problems. The equation for the critical normal pressure has been obtained. The influence of parameters of corrugation of the shell on the critical pressure has been analyzed.
|
48 |
|
Pleskachevsky Yu.M., Starovoytova E.E.
THE BENDING OF THREE7LAYER ELASTIC CORE WITH VARIABLE STIFF SHELL
The bending of three-layer elastic core with variable thickness of one of two stiff shells is considered. To describe kinematics of asymmetrical over thickness pack of the core the hypotheses of the broken normal are accepted. A system of equilibrium equations and its general analytical solution in terms of displacements haves been derived.
|
52 |
|
Nemtsov V.B., Kamluk A.N., Shirko A.V.
MOLECULAR-STATISTICAL THEORY OF ELASTIC AND VISCOUS PROPERTIES OF RUBBER-LIKE MATERIALS WITH ORIENTATIONAL ORDER
The paper contains the results of investigation of elastic and viscous properties of rubber-like materials with orientational order. The elastic properties are described with the help of the introduced microscopic Cauchy–Green tensor. The obtained results describe the nonlinear elastic properties well and predict the existence of the soft modes. In the theory of viscous properties the approved model for the time correlation function of the microscopic stress tensor is used.
|
56 |
|
Pirmamedov I.T.
TO INVESTIGATE CALCULATION OF PARAMETRIC VIBRATIONS OF VISO BAR IN MEDIUM WITH REGARD TO DAMAGEABILITY
In the paper on the basis of the theory of damageability consider parametric vibrations of a linear inhomogeneous in thickness bar with regard do physical and geometrical non-linearity, buried in viso medium. The problem is solbed by variational method. Characteristic curbes of dependend of applied force on frequency are constructed.
|
60 |
|
Bosacov S.V., Shchetsko Ì.S.
THE INFLUENCE OF SHEAR ENERGY AND ROTARY INERTIA TO BEAM ELEMENTS OSCILLATION
The influence of correction for shear and rotary inertia in the case of free oscillating physically – nonlinear beams is analysed in the paper. The solution obtained via energetic methods with the usage of «moment – curvature» diagram. Various types of materials and transversal shapes are studied. The influence of nonlinearity to the natural frequency is shown and analysed. Obtained solutions can be used in the calculations of building structures.
|
63 |
|
Vasilevich Y.V., Sakhonenko V.M., Sakhonenko S.V.
DEFORMATIVE CHARACTERISTICS OF PREPREG TEXTILE MATERIAL
The connection between relative coefficients of nonelastic and elastic strain duriug tension and compression of the prepreg textile material is found on the basis of the threads points displacement consideration.
|
67 |
|
Khomiak T.V.
ABOUT STABILIZATION FOR UNSTABLE ROTATION OF LAGRANGE TOP WITH CAVITY CONTAINING FLUID
The possibility of stabilization for unstable rotation of the Lagrange top with ideal fluid by means of rotating rigid bodies is shown in the limits of necessary conditions of stability. One of rotating rigid bodies has a fixed point. Numerical researches of influence parameters of rotating rigid bodies on effect of stabilization are carried out.
|
71 |
|
Grishkevich A.A., Klubkov A.P.
THEORETICAL BASIS OF CALCULATION OF SHORT DURABILITY OF WOODWORKING TOOLS CUTTER EDGE
Theoretical dependences permitting to define normal tensions in a cross-section of woodworking tools at the start-time of cutting with a sharp knife under different schemes of front surface load are developed. The leading factor determining the value of normal tensions arising in the cross-section of a wedge-knife from tangent (hogging) cutting force are discovered. The analysis of the previously developed formulas for defining the grade of the knife’s tip winding is presented.
|
75 |
|
Petko V.I., Kukonin V.E.
THE GENERALIZED METHOD OF IDENTIFICATION OF A NONLINEAR DYNAMIC OBJECT WITH UTILIZATION OF A CONSTANT LOW7INERTIA OF EXTERNAL FORCE
The generalized method of identification of a nonlinear dynamic object (NDO) and NDO’s mathematical model are considered. Instead of an NDO, the modeling of a linear dynamic object (LDO) is proposed, when in general case the pulse characteristic (PC) varies in form, amplitude and length depending on the level of an input signal. The research of the created mathematical model has been carry out by computer facilities.
|
80 |
|
Zhuravkov M.A., Kushunin A.A.
EXAMINATION OF MECHANIC AND MATHEMATIC MODEL OF MASSIF WITH EXCAVATION AND GAS7SATURATED TROUGH
This paper deals with results of modeling and examination of mechanic and mathematic model of massif approximated through continuous isotropic medium in excavations neighborhood with gas-saturated trough.
|
83 |
