Share Email Print
cover

Proceedings Paper

Optimization of location and tuning of the state-switched absorber for controlling beam vibration
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

This paper considers the optimization of the performance of a state-switched absorber (SSA) in controlling the vibration of a continuous beam. A state-switched absorber has the capability to instantaneously change its stiffness, which allows the absorber to 'retune' to a new natural frequency instantaneously. Between each 'retuning', or switch event, the SSA is essentially a passive device, tuned to the resonance frequency of its current state. With proper switching logic, the SSA shows improved performance in vibration control as compared to classical passive devices when the excitation contains more than one frequency component. The SSA considered here is capable of switching between only two discrete stiffnesses. A direct search algorithm is employed for optimization of the absorber's location along the beam as well as the two tuning frequencies needed to achieve the best performance of the state-switched absorber. Several two-frequency component point excitations are considered at a few locations along the beam and over a range of frequencies. The optimized performance of the state-switched absorber is compared to the optimized performance of a classical tuned vibration absorber (TVA) for each forcing case.

Paper Details

Date Published: 1 August 2003
PDF: 10 pages
Proc. SPIE 5049, Smart Structures and Materials 2003: Modeling, Signal Processing, and Control, (1 August 2003); doi: 10.1117/12.484014
Show Author Affiliations
Mark Holdhusen, Georgia Institute of Technology (United States)
Kenneth A. Cunefare, Georgia Institute of Technology (United States)


Published in SPIE Proceedings Vol. 5049:
Smart Structures and Materials 2003: Modeling, Signal Processing, and Control
Ralph C. Smith, Editor(s)

© SPIE. Terms of Use
Back to Top