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Experimental-Analytical Dynamic Substructuring of Ampair Testbed: A State-Space Approach

Mladen Gibanica (Institutionen för tillämpad mekanik, Dynamik) ; Anders T Johansson (Institutionen för tillämpad mekanik, Dynamik) ; Anders Liljerehn (Institutionen för tillämpad mekanik, Dynamik) ; Per Sjövall ; Thomas Abrahamsson (Institutionen för tillämpad mekanik, Dynamik)
Dynamics of Coupled Structures, Volume 1, Proceedings of the 32nd IMAC, A Conference and Exposition on Structural Dynamics, 2014 (2191-5644). Vol. 1 (2014), p. 1-14.
[Konferensbidrag, refereegranskat]

The Society for Experimental Mechanics (SEM) Substructuring Focus Group has initiated a research project in experimental dynamic substructuring using the Ampair 600W wind turbine as a testbed. In this paper, experimental as well as analytical models of the blades of said wind turbine are coupled to analytical models of its brackets. The focus is on a state-space based substructuring method designed specifically for experimental-analytical dynamic substructuring. It is shown a) theoretically that the state-space method gives equivalent results to the second order methods under certain conditions, b) that the state-space method numerically produces results equivalent to those of a well-known frequency-based substructuring technique when the same experimental models are used for the two methods and c) that the state-space synthesis procedure can be translated to the general framework given by De Klerk et al.

Nyckelord: substructuring, experimental-analytical dynamic, modal analysis, vibration testing, state-space, component mode synthesis, frequency based substructuring, automatic system identification, wind turbines



Denna post skapades 2014-02-10. Senast ändrad 2016-07-11.
CPL Pubid: 193606

 

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Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Dynamik

Ämnesområden

Maskinteknik

Chalmers infrastruktur