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Proceedings Article

Design of passive piezoelectric damping for space structures

[+] Author Affiliations
Jack Aldrich, Nesbitt W. Hagood, Andreas H. von Flotow, David W. Vos

Massachusetts Institute of Technology (USA)

Proc. SPIE 1917, Smart Structures and Materials 1993: Smart Structures and Intelligent Systems, 692 (September 8, 1993); doi:10.1117/12.152815
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From Conference Volume 1917

  • Smart Structures and Materials 1993: Smart Structures and Intelligent Systems
  • Nesbitt W. Hagood; Gareth J. Knowles
  • Albuquerque, NM | February 01, 1993

abstract

Passive damping of structural dynamics using piezoceramic electromechanical energy conversion and passive electrical networks is a relatively recent concept with little implementation experience base. This paper describes an implementation case study, starting from conceptual design and technique selection, through detailed component design and testing to simulation on the structure to be damped. About 0.5 kg. of piezoelectric material was employed to damp the ASTREX testbed, a 5000 kg structure. Emphasis was placed upon designing the damping to enable high bandwidth robust feedback control. Resistive piezoelectric shunting provided the necessary broadband damping. The piezoelectric element was incorporated into a steel flextensional device in order to concentrate damping into the 30 to 40 Hz frequency modes at the rolloff region of the proposed compensator. The effective stiffness and damping of the flextensional device was experimentally verified.

© (1993) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Jack Aldrich ; Nesbitt W. Hagood ; Andreas H. von Flotow and David W. Vos
"Design of passive piezoelectric damping for space structures", Proc. SPIE 1917, Smart Structures and Materials 1993: Smart Structures and Intelligent Systems, 692 (September 8, 1993); doi:10.1117/12.152815; http://dx.doi.org/10.1117/12.152815


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