4_2009_sen_12

Title of the article

STABILITY OF A FILLED CYLINDRICAL SHELL STRENGTHENED BY A CROSS SYSTEM OF RIBS UNDER ACTION OF DIFFERENT LOADS ALTERNATIVE IN TIME
Authors

Iskenderov R.A., Candidate of Physical and Mathematical Sciences, Azerbaijan University of Architecture and Construction; Baku, Azerbaijan, 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.
In the section DYNAMICS DURABILITY OF VEHICLES AND STRUCTURES
Year 2009 Issue 4 Pages 65-68
Type of article RAR Index UDK 539.37 Index BBK  
Abstract

The consider dynamical stability problems for a closed, medium-filled cylindrical shell simply supported by end faces and strengthened by a cross system of ribs, under axial compression and uniform external pressure. The formula for defining critical time and the values of critical stresses corresponding to the found critical time under the action of step impuls and for linear law of decrees of suddenly applied load are found.
Keywords

Dynamical stability, cylindrical shell, cross system of ribs, axial compression, external pressure
   
Bibliography
  • Amiro I.Ya. [et al.]. Ustojchivost rebristyh cilindricheskih obolochek pri sovmestnom dejstvii osevogo szhatija i kruchenija [Stability of ribbed cylindrical shells under combined action of axial compression and torsion]. Prikl. Mehanika [Applied mechanics], 1977, vol. 13, no. 12, pp. 51-57.
  • Volmir A.S. Nelinejnaja dinamika plastinok i obolochek [Nonlinear dynamics of plates and shells]. Moscow, Nauka Publ., 1972. 432 p.
  • Volmir A.S. Obolochki v potoke zhidkosti i gaza. Zadachi ajerouprugosti [Casing in liquid and gas flow. Aeroelasticity tasks]. Moscow, Nauka Publ., 1976. 416 p.
  • Latifov F.S., Isaev Z.F. Ustojchivost cilindricheskie obolochki, usilennye perekrestnoj sistemoj reber zapolnennoj sredoj pri prodol'nom osevom szhatii [Stability of cylindrical shells, reinforced cross-ribs system filled with fluid at the longitudinal axial compression]. Proceedings of IMM of NAS of Azerbaycan. 2007, pp. 115-122.
  • Amiro I.Ya., Zarutskiy V.A. Teorija rebristyh obolochek. Metody rascheta obolochek [The theory of ribbed shells. Methods of calculating shells]. Moscow, Hauk. Dumka Publ., 1980. 367 p.
  • Pasternak P.L. Osnovy novogo metoda rascheta fundamentov na uprugom osnovanii pri pomoshhi dvuh kojefficientov posteli [Fundamentals of the new method of calculation of foundations on an elastic foundation with two bed coefficients]. Moscow, Stroyizdat Publ., 1954. 56 p.
4_2009_sen_11

Title of the article

SEMI-ACTIVE SUPPRESSION OF BEAM VIBRATIONS BY USING ATTACHED DYNAMIC DAMPERS
Authors

Botogova M.G., Candidate of Physical and Mathematical Sciences; Belarusian National Technical University, Minsk, the Republic of Belarus

Mikhasev G.I., Doctor of Physical and Mathematical 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.
In the section DYNAMICS DURABILITY OF VEHICLES AND STRUCTURES
Year 2009 Issue 4 Pages 61-64
Type of article RAR Index UDK 539.3 Index BBK  
Abstract

Vibrations of a beam with attached dynamic absorbers are considered. Assuming neighborhood of fundamental frequencies of the dampers to frequencies of the controlled modes of the beam vibrations, by using the multiple-scale method over time, an approximate solution of the equations governing vibrations of the "beam-dampers" system is constructed.
Keywords

Vibrations, "beam-dampers" system, fundamental frequencies
   
Bibliography
  • Abe M., Igusa T. Semi-active dynamic vibration absorbers for controlling transient response. Journal of Sound and Vibration, 1996, no. 198(5), pp. 547-569.
  • Coulter J.P., Duclos T.G. Applications of electrorheological materials in vibration control. The Second International Conference on ER Fluids, North Carolina, 1989, pp. 300-325.
  • Seto K., Yamanouchi M. On the effect of a variable stiffness-type dynamic absorber with eddy)current damping. Bulletin of the Japan Society of Mechanical Engineers, 1978, no.21, pp. 1482-1489.
  • Nayfe A.Kh. Metody vozmushhenij [Perturbation methods]. Moscow, Mir Publ., 1972. 446 p.
  • Mikhasev G.I., Botogova M.G. O kontrole  mody kolebanij balki s prisoedinennym dinamicheskim gasitelem [About mode controlling the oscillation of the beam with an attached dynamic damper]. Teoretich. i prikladnaja mehanika [Theoretical and Applied Mechanics], 2009, vol. 24, pp. 30-33.
4_2009_sen_9

Title of the article

EIGEN VIBRATIONS OF A FLOWING LIQUID - FILLED CYLINDER SHELL REINFORCED BY A CROSS SYSTEM OF RIBS IN MEDIUM
Authors

Latifov F.S., Doctor of Physical and Mathematical Sciences, Institute of Mathematics and Mechanics, Azerbaijan National Academy of Sciences, Baku, Azerbaijan

Aliyev F.F., Institute of Mathematics and Mechanics, Azerbaijan National Academy of Sciences, Baku, Azerbaijan
In the section DYNAMICS DURABILITY OF VEHICLES AND STRUCTURES
Year 2009 Issue 4 Pages 55-57
Type of article RAR Index UDK 539.37 Index BBK  
Abstract

The paper is devoted to free vibrations of a flowing fluid - filled cylindrical shell reinforced by a cross system of ribs in on elastic medium. Frequency equations of vibrations of the considered system are constructed and numerically realized. It is shown that frequencies of vibrations of the system decrease due to increase of velocity.
Keywords

Free vibrations, cylindrical shell, frequency equations
   
Bibliography
  • Amiro I.Ya., Zarutskiy V.A. Teorija rebristyh obolochek. Metody rascheta obolochek [The theory of ribbed shells. Methods of calculating shells]. Kiev, Nauk. Dumka Publ., 1980. 367 p.
  • Latifov F.S. Kolebanija obolochek s uprugoj i zhidkoj sredoj [Fluctuations shells with elastic and liquid media]. Baku. Elm Publ., 1999. 164 p.
  • Volmir A.S. Obolochki v potoke zhidkosti i gaza. Zadachi gidrouprugosti [Casing in liquid and gas flow. Tasks of hydroelasticity]. Moscow, Nauka Publ., 1979. 320 p.
4_2009_sen_10

Title of the article

DETERMINATION OF THE TIME OF COMPLETE CORROSION WEAR OF THE COVER OF A RING-SHAPED ELEMENT
Authors

Ali-zadeh A.N., Doctor of Physical and Mathematical Sciences; Azerbaijan Technical University; Baku, Azerbaijan

Abbasov A.D., Azerbaijan Technical University; Baku, Azerbaijan
In the section DYNAMICS DURABILITY OF VEHICLES AND STRUCTURES
Year 2009 Issue 4 Pages 58-60
Type of article RAR Index UDK 621.793 Index BBK  
Abstract

The paper considers prestressed long cylindrical shell, outer surface of which is subjected to corrosion. It is supposed that initial stress is generated in two ways and corrosion brings to the change of outer surface radius. Assuming that corrosion rate depends on initial stress, the time of complete wear of outer surface for each of the both ways is determined.
Keywords

Long cylindrical shell, corrosion, outer surface radius
   
Bibliography
  • Antikain P.A. Metally i raschet na prochnost kotlov i truboprovodov [Metals and strength calculation of boilers and pipelines]. Moscow, Energiya Publ., 1980. 424 p.
  • Ali-zadeh A.N., Kocharli N.F. Variacionnye principy dinamiki tonkostennyh konstrukcij [Variational principles of dynamics of thin-walled structures]. Baku, Irshad Publ., 1997. 135 p.
  • Steklov O.I. Stojkost materialov i konstrukcij k korrozii pod naprjazheniem [Resistant materials and designs to stress corrosion]. Moscow, Mashinostroenie Publ., 1990. 384 p.
4_2009_sen_8

Title of the article

VIBRATION OF CIRCULAR METAL-POLYMERIC PLATES ON EN ELASTIC FOUNDATION ANDER HEAT STROKE
Authors

Pleskachevsky Yu.M., Corresponding Member of the NAS of Belarus; A.V. Luikov Heat and Mass Transfer Institute of NAS of Belarus; Minsk, the Republic of Belarus; E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Kubenko V.D., Academician of the NAS of Ukraine; S.P. Timoshenko Institute of Mechanics.of NAS, Kiev, Ukraine

Starovoitov Ed.I., Doctor of Physical and Mathematical Sciences

Leonenko D.V., Candidate of Physical and Mathematical Sciences; Belarusian State University of Transport; Gomel, the Republic of Belarus
In the section DYNAMICS DURABILITY OF VEHICLES AND STRUCTURES
Year 2009 Issue 4 Pages 50-54
Type of article RAR Index UDK 539.374 Index BBK  
Abstract

The axisymmetrical vibrations of elastic circular three-layer metal-polymeric plate on en elastic foundation ander heat stroke are explored. For the kinematics description asymmetrical on the thickness of package accepted hypothesises broken normal. Filler is light. Analytical deciding a problem are received and their numeric analysis are conducted.
Keywords

Axisymmetrical vibrations, metal-polymeric plate, elastic foundation
   
Bibliography
  • Pleskachevsky Yu.M., Starovoitov Ed.I., Yarovaya A.V. Dinamika metallopolimernyh system [Dynamics of Metal-Polymer Systems]. Minsk, Bel. Navuka Publ., 2004. 386 p.
  • Pleskachevsky Yu.M., Starovoitov Ed.I., Leonenko D.V. Dinamika krugovyh metallopolimernyh plastin na uprugom osnovanii. Ch. II. Vynuzhdennye kolebanija [Dynamics of Metal-circular plate on an elastic foundation. Part II. Forced oscillations]. Mehanika mashin, mehanizmov i materialov [Mechanics of machines, mechanisms and materials], 2008, no. 4(5), pp. 48-51.
  • Pleskachevsky Yu.M., Starovoitov Ed.I., Leonenko D.V. Dinamika krugovyh metallopolimernyh plastin na uprugom osnovanii. Ch. II. Vynuzhdennye kolebanija [Dynamics of Metal-circular plate on an elastic foundation. Part II. forced oscillations]. Mehanika mashin, mehanizmov i materialov [Mechanics of machines, mechanisms and materials], 2009, no. 1(5), pp. 48-51.
  • Starovoitov Ed.I., Yarovaya A.V., Leonenko D.V. Deformirovanie trehslojnyh jelementov konstrukcij na uprugom osnovanii [Deformation of sandwich structural elements on elastic foundation]. Moscow, FIZMATLIN Publ., 2006. 379 p.
  • Beytmen G., Erdeyn A. Vysshie transcendentnye funkcii [Higher transcendental functions]. Moscow, Nauka Publ., 1966. vol. 2, 295 p.

More Articles...

  1. 4_2009_sen_7
  2. 4_2009_sen_6
  3. 4_2009_sen_5
  4. 4_2009_sen_4