VARIOUS TYPES TENSION FOR T-SHAPED CENTRAL JOINTS OF BUS FRAMEWORK COMPARISON AND INFLUENCE OF JOINT FORM ON UNIT DURABILITY LEVEL ESTIMATION

Dovnar S.S., Candidate of Technical Sciences; Joint Institute of Mechanical Engineering of the NAS of Belarus; Minsk, the Republic of Belarus

Baulin S.S., Joint Institute of Mechanical Engineering of the NAS of Belarus; Minsk, the Republic of Belarus

Kovenya A.S., Joint Institute of Mechanical Engineering of the NAS of Belarus; Minsk, the Republic of Belarus

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.

T-shaped joint, durability, smoothed joint

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THE COMPARATIVE ANALYSIS OF EFFICIENCY OF WHEELS AND WAYS TO INCREASE IT

Mikhailau V.V., Candidate of Technical Sciences; Joint Institute of Mechanical Engineering of the NAS of Belarus; Minsk, the Republic of Belarus

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.

Kinematics factors, transmission control, wheel rolling resistance, traction wheel properties

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RESEARCH OF ZONES OF DEFICIENT PROFILE GEARINGS OF TOOTHED BELT DRIVES

Bakhanovich A.G., Doctor of Technical Sciences; Belarusian National Technical University; Minsk, the Republic of Belarus, E-mail: 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.

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.

Toothed belt drives, matrix transformation, incomplete gearings

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SIMULATION AND ANALYSIS OF VEHICLE VIBRATION BURDEN

Hursky N.N., Candidate of Technical Sciences; Belarusian National Technical University; Minsk, the Republic of Belarus

Fourounjiev R.I., Doctor of Technical Sciences; Belarusian National Technical University; Minsk, the Republic of Belarus

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.

Dynamic vibration burden, wheel, car

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