Investigation of the torsional vibrations of a rotor turbine engine with a differential reduction gearbox

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Abstract

In this paper, the dynamics of turbine engine with a differential reduction gearbox is considered. Only natural torsional oscillations are investigated. In the framework of solving the problem of dynamics of elastic systems, according to experimental data and in our studies by the finite element method for one pair of conjugate teeth, it can be assumed that the dependence is close to a quadratic parabola or to a sinusoid. The hydrodynamic damping of vibrations of the elastic system rotor and how lubricant layer in the gears engagements in the splined joints, are considered. The Eigenfrequencies (Hz) of all rotors together with the blades and without the blades at a constant overlap coefficient in the gear teeth are also investigated. Revealed that, overstrain of the teeth in engagement of the gear wheels leads to parametric oscillations of the engine blades.

About the authors

Mikhail Kurushin

Samara University

Email: 029-029@mail.ru
Russian Federation

Valeriy Balyakin

Samara University

Author for correspondence.
Email: 029-029@mail.ru

Head of Department of Machine Design Principles

Russian Federation

Venceslas Ossiala

Samara University

Email: ossialav@gmail.com

Assisnat of the Department of Machine Design Principles

Russian Federation

References

  1. Kurushin, M.I., Balyakin, V.B. and Kurushin, A.M. (2014), “Experimental investigation of the courses of vibration excitation of elements of gas turbine engines with a differential reduction gearbox” , Izvestija Samarskogo nauchnogo centra Rossijskoj akademii nauk,vol. 16, no.4, pp. 152-158.
  2. Balyakin, V.B. and Kurushin, M.I. (2015), “Mathematical Modeling of the Two Mass Gear System with Consider ration of of Shaft Compliances”, Applied Mechanics and Materials, vol. 770, pp. 343-348.
  3. Kurushin, M.I., Balyakin, V.B. and Kurushin, A.M. (2014), “Parametric instability of the dynamics of gearwheels” , Vestnik Samarskogo gosudarstvennogo ajerokosmicheskogo universiteta im. akademika S.P. Koroljova, no. 5/1, pp. 106 - 111.
  4. Kurushin, M.I. and Balyakin, V.B. (2015), “Methods of controling vibration in elastic systems with gear”, 2th Conference Dynamics and Vibroacoustics of Machines, Procedia Engineering, vol. 106, pp. 192-201.
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  7. Ankouni, M., Lubrecht, A.A. and Velex, P. (2015), “Modelling of damping in lubricated line contacts - Applications to spur gear dynamic simulations”, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, vol. 230 (7-8), pp. 1222-1232.
  8. Kodnir D.S.et al. (1968), “Calculation of lubricant layer thickness in gears and rolling bearings”, Materialy konferentsii “zubchftye peredachi aviatsionnykh isdeliy, pp. 452-463.
  9. Kurushin M.I., Balyakin, V.B. and Ossiala V.B. (2016), “Investigation of the stiffness of teeth of two and three gear pairs”, Izvestija Samarskogo nauchnogo centra Rossijskoj akademii nauk, vol. 18, no.4 (6), pp. 1013-1020.
  10. Novikov D.K. and Balyakin V.B. (1999), “Dynamics of the rotor of a gas turbine engine with hydrodynamic dampers in the supports” , Problemy mashinostroenya I nadezhnosni mashin, no. 2, pp. 28-34.

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Copyright (c) 2019 Михаил Иванович Курушин, Валерий Борисович Балякин, Венсеслас Осиалла

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Journal of Dynamics and Vibroacoustics

ISSN 2409-4579 (Online)

Publisher and Founder: Samara National Research University, 34, Moskovskoye shosse, Samara, 443086, Russian Federation.

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E. V. Shakhmatov 

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