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Title: Performance characteristics of a smart flexible beam with distributed ACLD elements
Authors: Hau, LC
Fung, EHK
Keywords: Active damping
Performance characterization
Issue Date: 2002
Source: Proceedings of the ASME 2002 International Mechanical Engineering Congress and Exposition, Adaptive Structures and Materials Systems, New Orleans, Louisiana, USA, November 17–22, 2002, paper no. IMECE2002-33980, p. 125-132 How to cite?
Abstract: The finite element method, in conjunction with the Golla-Hughes-McTavish (GHM) viscoelastic model, is employed to model a clamped-free beam partially treated with active constrained layer damping (ACLD) elements. The governing equations of motion are converted to a state-space form for control system design. Prior to this, since the resultant finite element model has too many degrees of freedom due to the addition of dissipative coordinates, a model reduction is performed to revert the system back to its original size. Finally, optimal output feedback gains are designed based on the reduced models. Numerical simulations are performed to study the effect of different element configurations, with various spacing and locations, on the vibration control performance of a “smart” flexible ACLD treated beam. Results are presented for the damping ratios of the first two modes of vibration. It is found that improvement on the second mode damping can be achieved by splitting a single ACLD element into two and placing them at appropriate positions of the beam.
ISBN: 0-7918-3625-8
0-7918-1691-5 (E-ISBN)
0-7918-1692-3 (E-ISBN)
0-7918-1693-1 (E-ISBN)
DOI: 10.1115/IMECE2002-33980
Appears in Collections:Conference Paper

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