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MECHANICS OF MOBILE MACHINES |
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Algin V.B., Verbitski A.V., Kovalenko A.V.
The life expense of the car. A part II: Models of life expenses for the basic parts
The dependences of life expenses on the run (kilometrage) and age for various basic car parts are developed. Getting dependences is based on two typical approaches: 1) the analysis of basic parts features and their operation conditions; 2) use of the substantial regularities presenting link between damaging factors and life expenses of the basic parts in car operation. The second approach is demonstrated for a truck tank..
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5 |
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Karabtsev V.S., Valeev D.Kh.
The vehicle aerodynamics and its consumer properties
One of the main ways of improving consumer properties, particularly fuel efficiency of trucks, is to increase their aerodynamic properties. This work includes results of experimental studies that are based on impact assessment of different aerodynamic devices on fuel consumption of trucks. Qualitative and quantitative research techniques were used. The reserves of improving other consumer properties are also shown.
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11 |
Korsakov V.V., Vygonnyi A.G.
Choice of the engine power for line haul trains
In the article basic approaches of determination of road train engine power are examined. Statistic data of engine power variation, average speeds and fuel consumption of line haul trains from 1966 to 2007 are presented. On the basis of analysis of modern requirements for line haul trains on highways the determination of engine power in terms of maximum speed of 60 km/h on the grade of 3—4% is proposed.
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15 |
Dovgyalo V.A., Bochkaryov D.I., Shapovalov V.M.
Modern condition and future trends of machines and equipment for hole repair of the highway asphalt pavement
The review of technological aspects and constructions of the machines and equipment for hole repair of the highway asphalt pavement has been developed. In this review the technologies of hole repair by laying the little grainy, flow asphalt mixes and emulsion-mineral mixes has been analysed. The constructive features, merits and demerits of machines and equipment, which realized each of exist technologies has been studied. Determined the perhaps roads of its modernization and directions of improvement. Showed, that the most effective is introduction in its constructions devices, which can modify asphalt mixes and activate the components of emulsion-mineral mixes, lowering energy consumption and enlargement technological possibilities, in particular, by using in distribution of the against ice-crusted ground materials during winter period.
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18 |
Hursky N.N, Fourounjiev R.I.
Simulation and analysis of vehicle vibration burden
The article deals with the simulation and analysis of vehicle dynamic vibration burden. Mathematical model of vibrations of wheel machines, the basic geometric and physical-mechanical parameters of the research are presented. The results of the analysis of the vertical accelerations of the most salient points of a car moving at a given speed range for certain types of roads are expounded.
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25 |
Mikhailau V.V.
The comparative analysis of efficiency of wheels and ways to increase it
The article offers a method to estimate the wheel efficiency and identifies the ways to increase it. The propositions are based on the power and kinematics factors analysis. The substantiation is given to the following variants: the transmission control, the proposals to remove working mode zone to lowest values of wheel rolling resistance, to use an original wheel design to reduce wheel rolling resistance. The offered innovations concern the increase of general efficiency of mobile cars, the improvement of traction wheel properties and reduction of fuel consumption.
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29
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ENGINEERING COMPONENTS |
Bakhanovich A.G.
Research of zones of deficient profile gearings of toothed belt drives The kinematics of toothed belt drives on the basis of matrix transformation of coordinates is investigated. Analytical dependences of corners of incomplete gearings of toothed from key parameters of drive are received.
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35 |
Dovnar S.S., Baulin S.S., Kovenya A.S.
Various types tension for T-shaped central joints of bus framework comparison and influence of joint form on unit durability level estimation
On the basis of finite-element models analysis influence of central joint form of bus framework rods on level of its durability is estimated. The variant of the smoothed joint, which durability is essentially higher (3—5 times) as usual T-shaped joint is offered.
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42 |
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MECHANICS OF DEFORMED SOLIDS |
Bulanov Å.A.
Flat contact deformation. Restricted half space. Constant pressure
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48 |
Pirmamedov I.T.
Calculation of parametric vibrations of homogeneous in thickness visco'elastic bar in visco'elastic soil
In the present paper we consider parametric vibrations of rectilinear inhomogeneous in thickness bar allovering for physical and geometrical non-linearity, buried under visco-elastic soil. The problem is solved by variational method typical curves for dependence of applied force on frequency are constructed.
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52 |
Kuntsevich S.P., Nikonova T.V., Mikhasev G.I.
On the influence of modulus of subgrade reaction and the wavelength of corrugation on bifurcation of thin corrugated shell lying on elastic foundation under action of hydrostatic pressure
The problem of buckling of a thin corrugated shell lying on elastic foundation under action of the non-uniform hydrostatic pressure is considered. The influence of the elastic foundation is taken into account as the additional pressure within the framework of Winkler’s model. The semi-moment 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. Its numeric solution has been obtained. The influence of parameters of corrugation of the shell and modulus of subgrade reaction on the critical pressure has been analyzed.
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57 |
Akhoundova I.A.
Disruption of corroded rod with piecewise constant thickness under dynamic longitudinal loading
The present paper considers longitudinal oscillations of corroded rod with piecewise constant thickness taking initial stress into account. The value of proper frequency is defined. In addition, the value of the frequency when the rod breaks in the place of connection of rod elements is defined.
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61 |
Shwed O.L.
Defining relation of nonlinearly elastic'viscoplastic material with reference to metals and alloys
Overall principles of build-up of the physical equations are offered. Essential modeling hypotheses are made. The statement of a defining relation for considered model of a material is given. The example of a numerical modeling of process of simple shearing strain is resulted.
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65 |
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TECHNOLOGICAL MECHANICS |
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Belotserkovsky M.A., CHEKULAEV A.V., Kukareko V.A.
Technological parameters of flame spraying coatings thermoplastic polymers
The article includes description of the flame spraying process of thermoplastic polymer coatings in the form of powder and wire. Implemented a theoretical assessment of thermal and dynamic parameters of the jet flame, the spray polymer wire to form a coating. It is shown that the physical and mechanical properties of polymer coatings essentially depend on the initial state (powder, wire), caused by the material. After the formation of coatings by applying layers of polymer powders are predominantly amorphous structure, and after spraying wires mainly crystalline. It was found that the formation of antifriction coatings operating in the tribe<paired with the unit loads of up to 4 MPa can be used as a dispersion of polymer rods, and coating polymer powders. For more loaded friction units should be used only powder coating. It is shown that the modification of a powder charge on the basis of polyamide nano size carbon filler type UDAG enhances the value limit of unit loads, with dry friction from 7 to 10 MPa.
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69 |
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Shulyak V.A., Buhlak A.V.
Ñapacity expenses on granular materials mixing research
In given article materials of capacity expenses on granular materials mixture in periodic action drying device research are presented. Design procedures of mass characteristics (position of gravity centre) with use of three-dimensional models of device working chamber and various volumes of material loadings are resulted. Comparison of experimental data with theoretical researches results is made.
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75 |
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Smychnik A.D., Prushak V.J., Dakuko S.N., Ischenko R.V.
Experience of working of mine fields districts of potash mines with a longwall turn in rue «PA «Belaruskali»
In the article the regularities of interaction of the modern mechanized complexes and the elastic deformed medium of districts of mine fields of potash mines of RUE «PA «Belaruskali» with the small sizes are shown. Offered new schemes of working with a turn of the mechanized complex on the boundary of a panel, preventing rock falls of a roof at driving of the end districts are examined. Possible ways of increase of productivity of the mining equipment are described.
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80 |
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BIOMECHANICS |
Mikhasev G.I., Ermochenko S.A.
Static model of the middle ear subjected to reconstruction by using the «large island» tympanoplasty technology. Part II: Strain'stress state
The mathematical and mechanical model of the reconstructed middle ear subjected to tympanoplasty by using the «large island» technique is constructed. The restored tympanic membrane (TM) is modeled as the system of two concentrically conjugate annular plates from which the internal plate is monolayer and made from the cartilaginous tissue and the external one consists of two layers — remnants of the ear-drum and transplant. The influence of dimension of the deleted or damaged area of the TM, the transplant thickness on the strain<stress state is studied.
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86 |
Pokatilov A.E., Zagrevsky V.I., Lavshuk D.A.
The equations of purposeful movement of the sportsman in conditions of the elastic support
The equations of movement of the sportsman in conditions of an elastic support on an example of performance of exercises in sports gymnastics are considered. Models of purposeful movement of the person, led are shown to the universal form independent of number of degrees of freedom of full system. It enables easily to use models in computer research of movement and carrying out of computing experiment. The analysis of the equations of movement of the sportsman in view of influence of a shell is executed for the big turn back on a crossbeam on the moments of the operating forces operating concerning joints.
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91 |
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INNOVATION MANAGEMENT |
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Rusetski W.A.
Using information technology in management industrial enterprises
In article are considered questions of the creation and introducing the information systems of support of the life cycle to competitive products on enterprises.
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94 |
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OUR JUBILEES ARE CELEBRATED |
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Sergey Chizhik (to the 50 anniversary from the date of a birth)
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98 |
