WHEELED VEHICLE MOTION CONTROL BASED ON MEASURING AND ANALYSIS OF FORCE FACTORS

Sazonov I.S., Doctor of Technical Sciences, Professor, Rector of the Belarusian-Russian University, Mogilev, Republic of Belarus

Kim V.A., Doctor of Technical Sciences, Professor, Professor of the Department "Technical maintenance of vehicles", Belarusian-Russian University, Mogilev, Republic of Belarus

Amelchenko P.A., Doctor of Technical Sciences, Professor, Deputy Chief of the Department of tractors and agricultural machinery - Chief Scientific Officer of the Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus

Dubovik D.A., Candidate of Technical Sciences, Associate Professor, Director of the STC "Mechanical engineering", Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus

The paper gives theoretical justification of the ways to measure actual braking torque of the wheels with the bearing face for drum and disk brakes which are necessary for creating automated brake control systems for vehicles based on load design. The results of measurement of braking torque and lateral reaction effecting the wheels of VAZ-2108 while
emergency braking («μ-split» surface) were obtained. New algorithms of braking control of vehicles which have been carried out in a model of automated control systems have been created on the basis of force factor change analysis. Test results have proved their efficiency. The paper presents methods of gaining new sources of information such as saddle-type articulated lorry segment interaction forces which make it possible to create braking control systems of articulated lorries ruling out folding of their parts at various modes of the vehicle motion. Prospects of electrical signal use which is proportionate to force factors (wheels-road contact force and force of interaction of the parts of the articulated lorry) for creating new on-board braking diagnostic systems and movement control stabilizing systems for vehicles at various motion modes (ESP systems on load design) are given in the paper.

coefficient of relative sliding, automatic control system, information sources, control algorithm, negative derivatives, circulation of power, power analysis, emergency braking, vehicle, actually realized moments, thresholds moments

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THE DETERMINATION OF THE TEXTILE BEHAVIOR REGULARITIES UNDER COMPRESSION

Vasilevich Y.V., Doctor of Physics and Mathematics, Professor, Head of the Department "Resistance of materials of engineering profile", Belarusian National Technical University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.

Sakhonenko V.M., Candidate of Physical and Mathematical Sciences, Professor, Head of the Department "Applied mathematics", Moscow State Open University, Moscow, Russia

Sakhonenko S.V., Candidate of Physical and Mathematical Sciences, Deputy Associate Professor of the Department "Resistance of materials of engineering profile", Belarusian National Technical University, Minsk, Republic of Belarus

Gorely K.A., General Director, OAO "Avangard", Safonovo, Russia

Malyutin E.V., Chief Designer, OAO "Avangard", Safonovo, Russia

The compression of the cross section of prepreg threads is carried out in conjunction with stretching of the second thread family. In the first stage it is inelastically consolidated, an irreversible compression takes place. The second stage of thread family compression is characterized by elastic deformations only. The established relationships between the relative deformation of compression and compression force are linear and reflect not only the thread material properties but the structural features of the textile too.

fabric, thread, compression, deformation, family of yarns, deformation model, yarn section

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PROBLEM OF PRESENCE OF THE RAILWAY ROLLING STOCK IN THE REPUBLIC OF BELARUS. RECYCLE, CAR BUILDING, TESTS

Senko V.I., Doctor of Technical Sciences, Professor, Rector of the Belarusian State University of Transport, Gomel, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.

Putyata A.V., Candidate of Technical Sciences, Associate Professor, Senior Researcher, Belarusian State University of Transport, Gomel, Republic of Belarus

The problem of security of conveyances by a railway rolling stock in Republic of Belarus and the basic ways of its solution is observed. It is specified, that working capacity maintenance, improvement of park of carriages by conducting of capitally-regenerative works with life extension are effective enough solutions of the specified problem along with development of car-building manufacture in republic. The effective scientific basis of working out of competitive designs of carriages is offered and instances of its implementation at the car-repair and car-building factories are resulted. Importance of development of test baseline of a railway rolling stock in Republic of Belarus is underlined.

rolling stock, amortization, share of a wagon, upgrade, recycling, wagon building, tests

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SOME DEVELOPMENTS FOR MATHEMATICAL THEORY OF MODERN MECHANICS

Zhuravkov M.A., Doctor of Physical and Mathematical Sciences, Professor, Vice-Rector, Head of the Department "Theoretical and applied mechanics", Belarusian State University, Minsk, Republic of Belarus

Pleskachevsky Yu.M., Corresponding Member of the NAS of Belarus, Doctor of Technical Sciences, Professor, Chairman of the Presidium of the Gomel branch of the NAS of Belarus, Gomel, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.

Romanova N.S., Head of the Department of Youth Programs and Projects, Competitor of the Department of Theoretical and Applied Mechanics, Mechanical and Mathematical Faculty of the Belarusian State University, Minsk, Republic of Belarus

Classical development and the formation of some new modern branches in mechanics require continuous improvement and modification of mathematical models and methods to solve the model problems. In this article we consider some developments in mechanics and mathematical models for the description of the mechanical state and different material behaviour and perspectives of fractional calculus for the use in mechanics, and describe the conjugate biophysical and biomechanical problems, the mathematical models of material deformation taking into account their complex heterogeneous structure.

mechanical and mathematical models of fractional order, generalized model of Maxwell, Kelvin-Voigt, Zener, models of viscoelasticity, heterogeneous environments

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