Dynamics of gas turbine engines rotors taking into account non-linear effects

O. Repetckii1 , I. Ryzhikov2 , Tien Quyet Nguyen3

1Irkutsk State Agrarian University named after A.A. Ezhevsky, Irkutsk, Russia

2, 3Irkutsk National Research Technical University, Irkutsk, Russia

2Corresponding author

Vibroengineering PROCEDIA, Vol. 8, 2016, p. 361-365.
Received 29 June 2016; accepted 3 September 2016; published 7 October 2016

Copyright © 2016 JVE International Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Creative Commons License
Abstract.

Different types of non-linearity must be considered in solving the problem of determining the fatigue life of gas turbine engines rotors on the base of numerical methods. When turbomachinery rotors are simulated for assessment their fatigue life it is necessary take into account geometrical and physical nonlinearity of the model. As a result of partial steam or gas admission and edge tracks from stator blades it is important to consider the non-linear nature of the loads impacting on the rotor elements during the transient conditions of the work. While determining real stresses at the last stage of fatigue life assessment it is also necessary to take into account their non-linear nature.

Keywords: gas turbine engines rotors, stress, fatigue life, natural frequencies, mode shapes.

References

  1. Repetckii O. V. Automation of Strength Calculations of Turbomachines. Irkutsk Publishing House, Irkutsk, 1990, p. 100, (in Russian). [CrossRef]
  2. Repetckii O. V., Buy Man Kyong A question of the choice of a numerical method of the analysis of stresses at an assessment of a multi-cycle fatigue of blades of transport turbomachines. News of IGEA, Vol. 6, 2010, p. 153-158, (in Russian). [CrossRef]
  3. Repetckii O. V., Do Man Tung Mathematical model operation and numerical analysis of vibrations of ideal cyclic and symmetric systems finite element method. IGEA News, Vol. 3, 2012, p. 149-153, (in Russian). [CrossRef]
  4. Repetckii O. V., Do ManTung Investigation of the characteristics of mistuned turbomachinery bladed discs vibration based on the reduced-order modeling by finite element method. Bulletin SibSAU, Vol. 1, Issue 53, 2014, p. 60-66, (in Russian). [CrossRef]
  5. Repetckii O. V. Computer Analysis of the Dynamics and Strength of Machines. Irkutsk State Technical University Publishing House, Irkutsk, 1999, p. 301, (in Russian). [CrossRef]
  6. Beirow B. Grundlegende Untersuchungen zum Schwingungsverhalten von Verdichterlaufrädern in Integralbauweise. Shaker Verlag, Aachen, 2009. [CrossRef]
  7. Klauke T. Schaufelschwingungen Realer Integraler Verdichterräder im Hinblick auf Verstimmung und Loaklisierung. Der Andere Verlag, Cottbus, 2008. [CrossRef]
  8. Maywald T., Beirow B., Kühhorn A. Mistuning und Dämpfung II. FVV Abschlussbericht, 2014. [CrossRef]
  9. Maywald T., Beirow B., Kühhorn A. Mistuning und Dämpfung II. FVV Informationstagung Turbomaschinen, 2014. [CrossRef]
  10. Heiman B., Gerdt V., Popp K., Repetckii O. V. Mechatronics: Components, Methods, Examples. Publishing House of the SB RAS, Novosibirsk, 2010, p. 602. [CrossRef]
  11. Zainchkovsky K. S., Repetckii O. V. Sensitivity Analysis of Gas Turbine Engine Blades by Finite Element Method. Intercollege Scientific Collection IrSTU “The Asymptotic Methods in Problems of Aerodynamics and Design of Aircraft”, Irkutsk State Technical University, Irkutsk, 1996, p. 83-88, (in Russian). [CrossRef]
  12. Irretier H., Repetski O. Vibration and Life Estimation of Rotor Structure. IFToMM Conference on Rotor Dynamics, Darmstadt, 1998. [CrossRef]
  13. Kayser A. Entwicklung eines Programmes zur Lebensdauer berechnung von Turbinenschaufeln. B.Sc. Thesis, Institute of Mechanics, University of Kassel, Kassel, 1990, p. 110. [CrossRef]
  14. Rieger N. F., Steele J. M., Lara T. C. T. Turbine blade life prediction computer program. Proceedings of EPRI Workshop on Steam Turbine Blade Reliability, 1982. [CrossRef]
  15. Wei S. T., Pierre C. Localization phenomena in mistuned assemblies with cyclic symmetry. Part 1: Free vibrations. Journal of Vibration, Acoustics, Stress, and Reliability in Design, Vol. 110, Issue 4, 1987, p. 429-438. [CrossRef]