Abstract
Substructure coupling is an important tool in several applications of modal analysis. It is particularly relevant in virtual prototyping of complex systems and responds to actual industrial needs, especially in an experimental context. Furthermore, the reverse problem, the decoupling of a substructure from an assembled system, arises when a substructure cannot be tested separately but only when coupled to neighboring substructures, a situation often encountered in practice. In this paper, the dynamic behavior of the Ampair test bed wind turbine rotor, made by three blades – each one bolted to the hub at three points – is analyzed. The aim is both to identify the dynamic behavior of the rotor starting from the frequency response functions (FRFs) of blades and hub, and to select a reduced set of relevant DoFs to represent the interface between blades and hub. FRFs to be used in the coupling procedure are obtained starting from FE model of each substructure, by using a super-element based computational approach. The decoupling problem, with the aim of identifying the dynamic behavior of each blade from the FRFs of the assembled rotor and of the hub, is also considered.
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References
D’Ambrogio W, Sestieri A (2004) A unified approach to substructuring and structural modification problems. Shock Vib 11(3–4):295–310
Jetmundsen B, Bielawa R, Flannelly W (1988) Generalised frequency domain substructure synthesis. J Am Helicopter Soc 33(1):55–64
de Klerk D, Rixen DJ, Voormeeren S (2008) General framework for dynamic substructuring: history, review, and classification of techniques. AIAA J 46(5):1169–1181
de Klerk D (2009) Dynamic response characterization of complex systems through operational identification and dynamic substructuring. Ph.D. thesis, TU Delft
D’Ambrogio W, Fregolent A (2009) Decoupling procedures in the general framework of frequency based substructuring. In: Proceedings of 27th IMAC, Orlando, USA, Feb 2009
D’Ambrogio W, Fregolent A (2010) The role of interface DoFs in decoupling of substructures based on the dual domain decomposition. Mech Syst Signal Process 24(7):2035–2048. doi:10.1016/j.ymssp.2010.05.007; also in Proceedings of ISMA 2010, Leuven, Belgium, Oct 2010, pp 1863–1880
Vormeeren SN, Rixen DJ (2010) A dual approach to substructure decoupling techniques. In: Proceedings of 28th IMAC, Jacksonville, USA, Feb 2010
Voormeeren SN, Rixen DJ (2012) A family of substructure decoupling techniques based on a dual assembly approach. Mech Syst Signal Process 27:379–396. doi: 10.1016/j.ymssp.2011.07.028.
D’Ambrogio W, Fregolent A (2005) Prediction of substructure properties using decoupling procedures, In: Soize C, Schuëller G (eds) Structural dynamics - Eurodyn 2005. Proceedings of the 6th international conference on structural dynamics, Paris, France, Sep 2005, pp 1893–1898
Mayes RL, Arviso M (2010) Design studies for the transmission simulator method of experimental dynamic substructuring. In: Sas P, Bergen B (eds) Proceedings of ISMA 2010 - international conference on noise and vibration engineering, Leuven, Belgium, Sep 2010, pp 1929–1938
Mayes RL, Ross MR (2012) Advancements in hybrid dynamic models combining experimental and finite element substructures. Mech Syst Signal Process 31:56–66
D’Ambrogio W, Fregolent A (2008) Promises and pitfalls of decoupling procedures. In: Proceedings of 26th IMAC, Orlando, USA, Feb 2008
Sjövall P, Abrahamsson T (2008) Substructure system identification from coupled system test data. Mech Syst Signal Process 22(1):15–33
Mayes RL (2012) An introduction to the SEM substructures focus group test bed - the Ampair 600 wind turbine. In: Mayes R, Rixen D, Griffith D, De Klerk D, Chauhan S, Voormeeren S, Allen M, Proulx T (eds) Topics in experimental dynamics substructuring and wind turbine dynamics, vol 2. Conference proceedings of the society for experimental mechanics series, vol 27. Springer, New York, pp 61–70. 10.1007/978-1-4614-2422-2_7
Harvie J, Avitabile P (2012) Comparison of some wind turbine blade tests in various configurations. In: Mayes R, Rixen D, Griffith D, De Klerk D, Chauhan S, Voormeeren S, Allen M, Proulx T (eds) Topics in experimental dynamics substructuring and wind turbine dynamics, vol 2. Conference proceedings of the society for experimental mechanics series, vol 27. Springer, New York, pp 73–79. 10.1007/978-1-4614-2422-2_9
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This research is supported by grants from University of Rome La Sapienza and University of L’Aquila.
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Brunetti, J., Culla, A., D’Ambrogio, W., Fregolent, A. (2014). Selection of Interface DoFs in Hub-Blade(s) Coupling of Ampair Wind Turbine Test Bed. In: Mayes, R., Rixen, D., Allen, M. (eds) Topics in Experimental Dynamic Substructuring, Volume 2. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-6540-9_14
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DOI: https://doi.org/10.1007/978-1-4614-6540-9_14
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