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Performance and reliability of semi-active equipment isolation

Publication ,  Journal Article
Gavin, HP; Zaicenco, A
Published in: Journal of Sound and Vibration
September 25, 2007

This study examines the performance and reliability of passive and semi-active damping in equipment isolation systems for earthquake protection. Performance and reliability measures are the peak accelerations sustained by the equipment and the peak displacements of the isolation system. A new hybridization of two previously studied semi-active control rules regulates the damping in the semi-active isolation system. A parameter study identifies suitable values for the stiffness and damping parameters of the passive isolation system, and feedback control constants for the semi-active equipment isolation and compares the performance for a set of historical earthquakes and for a set of different building models. The reliability of passive and semi-active equipment isolation systems is assessed separately for four historic earthquakes and in regards to uncertainties in the isolation system. The reliability assessment makes use of a polynomial metamodel of the responses as a function of the relevant random variables. Results illustrate the performance limitations of passive isolation systems in protecting shock- and vibration-sensitive equipment from near-fault ground motions and show the improvements associated with semi-active equipment isolation in terms of the mean and variability of the peak responses. Correlations between the isolation system variables and the responses provide guidance for improved behavior. © 2007 Elsevier Ltd. All rights reserved.

Duke Scholars

Published In

Journal of Sound and Vibration

DOI

EISSN

1095-8568

ISSN

0022-460X

Publication Date

September 25, 2007

Volume

306

Issue

1-2

Start / End Page

74 / 90

Related Subject Headings

  • Acoustics
  • 51 Physical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
 

Citation

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Chicago
ICMJE
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Gavin, H. P., & Zaicenco, A. (2007). Performance and reliability of semi-active equipment isolation. Journal of Sound and Vibration, 306(1–2), 74–90. https://doi.org/10.1016/j.jsv.2007.05.039
Gavin, H. P., and A. Zaicenco. “Performance and reliability of semi-active equipment isolation.” Journal of Sound and Vibration 306, no. 1–2 (September 25, 2007): 74–90. https://doi.org/10.1016/j.jsv.2007.05.039.
Gavin HP, Zaicenco A. Performance and reliability of semi-active equipment isolation. Journal of Sound and Vibration. 2007 Sep 25;306(1–2):74–90.
Gavin, H. P., and A. Zaicenco. “Performance and reliability of semi-active equipment isolation.” Journal of Sound and Vibration, vol. 306, no. 1–2, Sept. 2007, pp. 74–90. Scopus, doi:10.1016/j.jsv.2007.05.039.
Gavin HP, Zaicenco A. Performance and reliability of semi-active equipment isolation. Journal of Sound and Vibration. 2007 Sep 25;306(1–2):74–90.
Journal cover image

Published In

Journal of Sound and Vibration

DOI

EISSN

1095-8568

ISSN

0022-460X

Publication Date

September 25, 2007

Volume

306

Issue

1-2

Start / End Page

74 / 90

Related Subject Headings

  • Acoustics
  • 51 Physical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences