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Wind and Structures Volume 17, Number 4, October 2013, pages 399-417 DOI: https://doi.org/10.12989/was.2013.17.4.399 |
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Analysis and active control for wind induced vibration of beam with ACLD patch |
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Jinqiang Li and Yoshihiro Narita
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| Abstract | ||
| The structural vibration suppression with active constrained layer damping (ACLD) was widely studied recently. However, the literature seldom concerned with the vibration control on flow-induced vibration using active constrained layer. In this paper the wind induced vibration of cantilevered beam is analyzed and suppressed by using random theory together with a velocity feedback control strategy. The piezoelectric material and frequency dependent viscoelastic layer are used to achieve effective active damping in the vibration control. The transverse displacement and velocity in time and frequency domains, as well as the power spectral density and the mean-square value of the transverse displacement and velocity, are formulated under wind pressure at variable control gain. It is observed from the numerical results that the wind induced vibration can be significantly suppressed by using a small outside active voltage on the constrained layer. | ||
| Key Words | ||
| wind induced vibration; active control; fluctuating wind; cantilevered beam; velocity feedback | ||
| Address | ||
| Jinqiang Li : College of Mechanics, Taiyuan University of Technology, China; Faculty of Engineering, Hokkaido University, Japan Yoshihiro Narita : Faculty of Engineering, Hokkaido University, Japan | ||