Prestressing for reduction of local vibrations in a rotorcraft

• Autorzy: Suwała G. , Holnicki-Szulc J. , Knap L.
• Języki publikacji: EN

Abstrakty

EN

The main objective of this paper is to investigate the possibility of local structural vibration suppression via introducing initial prestressing. In order to evaluate the effectiveness of the proposed method, a two-step approach has been used. Firstly, a prestressed modal analysis was conducted to measure the influence of the prestressing on changes of eigenfrequencies and eigenmodes. In the second step, a steady dynamic analysis was performed to harmonic excitation to demonstrate the reduction of local amplitudes. Numerical experiments have been conducted on the model of a small rotorcraft. Our results indicate that introduction of initial prestressing may be used to affect natural structure frequencies and to lower the amplitude of vibrations of the structure exposed to external extortions.

Słowa kluczowe

EN

prestressing; rotorcraft; vibration suppression

PL

drgania; tłumienie drgań; wiropłat

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Engineering Transactions
• Rocznik: 2016
• Tom: Vol. 64, iss. 3
• Strony: 367--380
• Opis fizyczny: Bibliogr. 14 poz., rys., tab., wykr.

Twórcy

autor

Suwała G.

• Institute of Fundamental Technological Research Polish Academy of Sciences Pawińskiego 5B, 02-106 Warszawa, Poland

autor

Holnicki-Szulc J.

• Institute of Fundamental Technological Research Polish Academy of Sciences Pawińskiego 5B, 02-106 Warszawa, Poland

autor

Knap L.

• Institute of Vehicles Faculty of Automotive and Construction Machinery Engineering Warsaw University of Technology Narbutta 84, 02-524 Warszawa, Poland

Bibliografia

• 1. Sekuła K., Graczykowski C., Holnicki-Szulc J., On-line impact load identification, Shock and Vibration, 20(1): 123–141, 2013.
• 2. Mikułowski G., Wiszowaty R., Holnicki-Szulc J., Characterization of a piezoelectric valve for an adaptive pneumatic shock absorber, Smart Materials and Structures, 22(12): 125011-1-12, 2013.
• 3. Graczykowski C., Holnicki-Szulc J., Protecting offshore wind turbines against ship impacts by means of Adaptive Inflatable Structures, Shock and Vibration, 16(4): 335–353, 2009.
• 4. Faraj R., Holnicki-Szulc J., Knap L., Seńko J., Adaptive inertial shock-absorber, Smart Materials and Structures, 25(3): 035031-1-9, 2016.
• 5. Mróz A., Orłowska A., Holnicki-Szulc J., Semi-active damping of vibrations, Prestress Accumulation-Release strategy development, Shock and Vibration, 17(2): 123–136, 2010.
• 6. Mróz A., Holnicki-Szulc J., Biczyk J., Prestress Accumulation-release technique for damping of impact-born vibrations: application to self-deployable structures, Mathematical Problems in Engineering, 2015: 720236-1-9, 2015.
• 7. Holnicki-Szulc J, Haftka R., Vibration mode shape control by prestressing, AIAA Journal, 30(7): 1924–1927, 1992.
• 8. Radkowski S., Szulim P., Analysis of vibration of rotors in unmanned aircraft, 19th International Conference on Methods and Models in Automation and Robotics (MMAR), pp. 748–753, Międzyzdroje, Poland, September, 2–5, 2014.
• 9. Bajkowski J., Jasiński M., Mączak J., Radkowski S., Zalewski R., The active magnetorheological support as an element of damping of vibrations transferred from the ground to large-scale structure supports, Key Engineering Materials, 518: 350–357, 2012.
• 10. Lazar I.F., Neild S.A., Wagg D.J., Using an inerter-based device for structural vibration suppression, Earthquake Engineering and Structural Dynamics, 43(8): 1129–1147, 2014.
• 11. Humar J.L., Dynamics of structures, CRC Press, Boca Raton, London, New York, Leiden, 2002
• 12. Bedri R., Al-Nais M.O., Prestressed modal analysis using finite element package ANSYS, Lecture Notes in Computer Science vol. 3401, pp. 171–178, 2005. ([in:] Numerical Analysis and Its Applications: 3rd International Conference, NAA 2004, Rousse, Bulgaria, June 29 – July 3, 2004, Springer, Berlin, Heidelberg, pp. 171–178, ISBN 978-3-540-31852- 1).
• 13. Rana R., Song T.T., Parametric study and simplified design of tuned mass dampers, Engineering Structures, 20(3): 193–204, 1998.
• 14. Allemang R.J., The modal assurance criterion (MAC): twenty years of use and abuse, Proceedings of IMAC 20, The International Modal Analysis Conference, Los Angeles, CA, USA, pp. 397–405, 2002.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.