Paper Title:
Study of Modal Parameter Identification from Ambient Vibration on a Deep Radial Gate
  Abstract

In the engineering background of the prototype test of a deep radial gate on three gorges dam, two methods are provided for the modal parameter identification of the radial gate, one is applying operation modal analysis (OMA) to a gate which is under flood discharge, the other one is applying experiment modal analysis (EMA) to a inactive gate with some other gates under flood discharge. This paper is based on the feasibility study on the former method. We use the natural excitation technology (NExT) combined with the eigensystem realization algorithm (ERA) to determine the dynamic characteristics of a gate. Displacement data at 7 locations were processed using NExT-ERA to extract the natural frequency and associated damping ratio. The results show the effectiveness of this modal identification methodology and the possibility of implementing it on other hydraulic structure.

  Info
Periodical
Chapter
Chapter 2: Dynamics
Edited by
Paul P. Lin and Chunliang Zhang
Pages
511-517
DOI
10.4028/www.scientific.net/AMM.105-107.511
Citation
Y. Q. Cai, K. Zhang, "Study of Modal Parameter Identification from Ambient Vibration on a Deep Radial Gate", Applied Mechanics and Materials, Vols. 105-107, pp. 511-517, 2012
Online since
September 2011
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Price
$32.00
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