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Petrov, E P (2014) Sensitivity analysis of multiharmonic self-excited limit-cycle vibrations in gas-turbine engine structures with nonlinear contact interfaces. In: ASME Turbo Expo 2014: Turbine Technical Conference and Exposition, Volume 7A: Structures and Dynamics Düsseldorf, Germany, June 16–20, 2014. Proceedings of the ASME Turbo Expo . American Society of Mechanical Engineers (ASME). ISBN 9780791845769
Full text not available from this repository.Abstract
An efficient frequency-domain method is developed to calculate the sensitivity of multiharmonic amplitudes of the limit-cycle oscillations and their primary frequency to variation of the nonlinear contact interface parameters and aerodynamic characteristics. The method allows highly accurate and fast determination of the sensitivity coefficients together with the calculation of the limit-cycle amplitudes and frequencies using realistic large-scale finite element models of structures. The nonlinear contact interactions analysed include: friction contacts, unilateral interaction along normal direction at a contact interface, closing and opening clearances and interferences, cubic spring nonlinearity. The capabilities of the method are demonstrated on a set of test cases. Copyright 2014 by ASME.
| Item Type: | Book Section |
|---|---|
| Additional Information: | Paper No. GT2014-26673, pp. V07AT34A006; 11 pages |
| Keywords: | Sensitivity analysis Finite element method Frequency domain analysis Gas turbines Phase interfaces Vibration analysis |
| Schools and Departments: | School of Engineering and Informatics > Engineering and Design |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ0170 Mechanics applied to machinery. Dynamics T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL0500 Aeronautics. Aeronautical engineering |
| Depositing User: | Yevgen Petrov |
| Date Deposited: | 04 May 2015 07:29 |
| Last Modified: | 05 May 2015 07:29 |
| URI: | http://sro.sussex.ac.uk/id/eprint/53859 |