MECHANICS AND STABILITY OF OSCILLATORY PROCESSES OF A TRACKLAYING VEHICLE AT RECTILINEAR MOVEMENT

Derzhanski V.B., Doctor of Technical Sciences, Institute of Engineering Science of the UD of the RAS, Ekaterinburg, Russia, This email address is being protected from spambots. You need JavaScript enabled to view it.

Taratorkin I.A., Doctor of Technical Sciences, Institute of Engineering Science of the UD of the RAS, Ekaterinburg, Russia, This email address is being protected from spambots. You need JavaScript enabled to view it.

The analysis of conditions of excitation and stability of selfoscillations of the case of a tracklaying vehicle are resulted at movement with the big speed and on roads with the limited coupling properties.

selfoscillations, tracklaying vehicle, limited coupling properties

• Panovko Ja.G. Vvedenie v teoriju mehanicheskih kolebanij [Introduction to the theory of mechanical vibrations]. Moscow, Nauka, 1980. 272 p.
• Blagonravov A.A., Derzhanskij V.B. Dinamika upravljaemogo dvizhenija gusenichnoj mashiny [Dynamic of managed traffic of tracked vehicle]. Kurgan, Izd-vo KMI, 1995. 162 p.
• Kolesnikov K.S. ed. Teorija kolebanij [Theory of oscillations]. Moscow, MGTU im. N.Je. Baumana, 2003. 272 p.
• Derzhanskij V.B. Issledovanie dinamiki upravljaemogo dvizhenija bystrohodnyh gusenichnyh mashin [Research of dynamics of controlled movement of high-speed tracked vehicles]. Vestn. MGTU im. N.Je. Baumana [Herald of the MSTU n.a. N.Je. Bauman], 2008, no. 3(72), pp. 86-99.

A PROBLEM ON NATURAL VIBRATIONS OF ORTHOTROPIC CYLINDRICAL SHELL FILLED BY FLOWING LIQUID IN INFINITELY ELASTIC MEDIUM

Latifov F.S., Doctor of Physical and Mathematical Sciences, Institute of Mathematics and Mechanics, National Academy of Sciences of Azerbaijan, Baku, Azerbaijan, This email address is being protected from spambots. You need JavaScript enabled to view it.

Seifullaev F.A., Institute of Mathematics and Mechanics of the National Academy of Sciences of Azerbaijan, Baku, Azerbaijan

The present paper is devoted to investigation of vibrations of orthotropic cylindrical shells filled by flowing liquid in infinitely elastic medium. Complementing of equations of motion of orthotropic cylindrical shell, medium and liquid by contact conditions, we get a frequency equation for finding of naturalvibration frequency of shell in an infinite medium filled by flowing liquid. Influences of liquid flow rate and inertia properties of medium on naturalvibration frequency of the construction under consideration are investigated.

vibrations, orthotropic cylindrical shell, contact conditions, inertia properties

• Il'gamov M.A. [et al.]. Prochnost', ustojchivost' i dinamika obolochek s uprugim zapolnitelem [Strength, stability and dynamics of shells with elastic filler]. Moscow, Nauka, 1977. 331 p.
• Latifov F.S. Kolebanija obolochek s uprugoj i zhidkoj sredoj [Fluctuations of shells with elastic and liquid media]. Baku, Jelm, 1999. 164 p.
• Obuhov A.S. Raschet na prochnost' konstrukcij iz stekloplastikov i plastmassa neftepererabatyvajushhej i himicheskoj promyshlennosti [Strength analysis of structures made of fiberglass and plastic of oil refining and chemical industry]. Moscow, Mashinostroenie, 1978. 142 p.
• Vol'mir A.S. Obolochki v potoke zhidkosti i gaza [Skins in flow of liquid and gas]. Zadachi gidrouprugosti [Tasks of hydroelasticity]. Moscow, Nauka, 1979. 320 p.
• Pavlovskij V.S. Nelinejnye kolebanija i ustojchivost' ortotropnyh cilindricheskih obolochek s zhidkost'ju pri periodicheskih vozdejstvijah [Nonlinear oscillations and stability of orthotropic cylindrical shells with liquid at periodic actions]. Prikladnaja mehanika [Applied mechanics], 2000, no. 10, pp. 115-124.

RADIAL NATURAL VIBRATION OF THE ELASTIC THREE&LAYERED CYLINDRICAL SHELLS

Leonenko D.V., Candidate of Physical and Mathematical Sciences, Belarusian State University of Transport, Gomel, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.

The radial natural vibrations of the threelayered cylindrical shell are considered. Kirchhoff-Love`s hypotheses are accepted for the thin isotropic bearing layers. The work of the inplane shear, compression over thickness and variations in displacements are taken linear along the transverse coordinate for the thick filler the conditions of displacement continuity are not used on the contact boundaries. The deformations are small. The investigation of variations in natural frequencies of a cylindrical shell as dependent on the wave parameter is given as an example.

radial natural vibrations, threelayered cylindrical shell, inplane shear, contact boundaries

• Novichkov Ju.N. Dinamika sloistyh konstrukcij [Dynamics of layered structures]. Mat. metody i fiz. meh. polja [Mathematical methods and physical-mechanical fields], 1986, no. 24, pp. 41-46.
• Golovko K.G., Lugovoj P.Z., Mejsh V.F. O reshenii osesimmetrichnyh zadach dinamiki cilindricheskih obolochek na uprugom osnovanii [Solution of axisymmetric problems of dynamics of cylindrical shells on elastic foundation]. Prikladnaja mehanika [Applied mechanics], 2007, 43, no. 12, pp. 103-109.
• Pleskachevskij Ju.M., Starovojtov Je.I., Leonenko D.V. Dinamika krugovyh metallopolimernyh plastin na uprugom osnovanii. Ch. 1: Svobodnye kolebanija [Dynamics of circular metal-polymeric plates on en elastic foundation. Part 1. Free vibrations]. Mehanika mashin, mehanizmov i materialov [Mechanics of machines, mechanisms and materials], 2008, no. 4(5), pp. 48-52.
• Pleskachevskij Ju.M., Starovojtov Je.I., Leonenko D.V. Dinamika krugovyh metallopolimernyh plastin na uprugom osnovanii. Ch. 2: Vynuzhdennye kolebanija [Vibrations of circular metal-polymeric plates on en elastic foundation. Part II. Forced vibrations]. Mehanika mashin, mehanizmov i materialov [Mechanics of machines, mechanisms and materials], 2009, no. 1(6), pp. 48-52.
• Pleskachevskij Ju. M. [et al.]. Kolebanija krugovoj metallopolimernoj plastiny, svjazannoj s uprugim osnovaniem, pri teplovom udare [Vibration of circular metal-polymeric plates on en elastic foundation under heat stroke]. Mehanika mashin, mehanizmov i materialov [Mechanics of machines, mechanisms and materials], 2009, no. 4(9), pp. 50-54.
• Starovojtov Je.I., Jarovaja A.V., Leonenko D.V. Lokal'nye i impul'snye nagruzhenija trehslojnyh jelementov konstrukcij [Local and pulse loading of sandwich construction elements]. Gomel', BelGUT, 2003. 367 p.

FUNCTIONAL PROPERTIES OF STEPLESS TOOTHED TRANSMISSIONS

Ivanov K.S., Doctor of Technical Sciences, Institute of mechanics and engineering science n.a. acad. U.A. Dzholdasbekov MES of Republic of Kazakhstan, Almaty, Republic of Kazakhstan

Dzhomartov A.A., Doctor of Technical Sciences, Institute of mechanics and engineering science n.a. acad. U.A. Dzholdasbekov MES of Republic of Kazakhstan, Almaty, Republic of Kazakhstan, This email address is being protected from spambots. You need JavaScript enabled to view it.

Gear adaptive stepless transfer can be created in the form of a kinematic chain with two degrees of freedom having a mobile closed loop which consists of cogwheels. The closed loop imposes constraint on motion of links and transforms a kinematic chain into the mechanism with one input. Such mechanism gets property of automatic adaptation to variable technological loading. Laws of interrelation of force and kinematic parameters are resulted. The design of gear adaptive transfer is presented.

gear adaptive stepless transfer, kinematic chain, cogwheels, automatic adaptation, variable technological loading

• Markeev A.P. Teoreticheskaja mehanika [Theoretical mechanics]. Moscow, Nauka, 1990. 414 p.
• Ivanov K.S. The Question of the Synthesis of Mechanical Automatic Variable Speed Drives. Proceedings of the Ninth World Congress on the Theory of Machines and Mechanisms, Politechnico di Milano, Italy, 1995, vol.1, pp. 580-584.
• Ivanov K.S. Discovery of the Force Adaptation Effect. Proceedings of the 11th World Congress in Mechanism and Machine Science. Tianjin, China, vol. 2-4, pp. 581-585.
• Ivanov K.S. Gear Automatic Adaptive Variator with Constant Engagement of Gears. Proceedings of the 12th World Congress in Mechanism and Machine Science. Besancon, France, 2007, vol. 2, pp. 182-188.
• Ivanov K.S. Peredacha s avtomaticheski reguliruemoj skorost'ju [Transmission with automatically adjustable speed]. Patent RK, no. 3208, 1996.
• Ivanov K.S. Avtomaticheskaja transmissija [Automatic transmission]. Patent RK, no. 12236, 2002.
• Ivanov K.S. Adaptivnaja zubchataja peredacha (varianty) [Adaptive gear (versions)].Patent RK, no. 14477, 2004.