NDLI: Performance Characteristics of a Smart Flexible Beam With Distributed ACLD Elements

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Hau, L. C. Eric, H. K. Fung
Copyright Year	2002
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.
Sponsorship	Aerospace Division
Starting Page	125
Ending Page	132
Page Count	8
File Format	PDF
ISBN	0791836258
DOI	10.1115/IMECE2002-33980
Volume Number	Adaptive Structures and Materials Systems
Conference Proceedings	ASME 2002 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2002-11-17
Publisher Place	New Orleans, Louisiana, USA
Access Restriction	Subscribed
Subject Keyword	Damping Degrees of freedom Vibration Computer simulation Control systems Equations of motion Finite element methods Performance characterization Design Finite element model Feedback Active damping Vibration control
Content Type	Text
Resource Type	Article

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