0

Full Content is available to subscribers

Subscribe/Learn More  >

A Nonlinear Vibration Absorber Based on Nonlinear Shunted Piezoelectrics

[+] Author Affiliations
Biao Zhou, Fabrice Thouverez, David Lenoir

Ecole Centrale de Lyon, Ecully, France

Paper No. GT2012-69322, pp. 1295-1306; 12 pages
doi:10.1115/GT2012-69322
From:
  • ASME Turbo Expo 2012: Turbine Technical Conference and Exposition
  • Volume 7: Structures and Dynamics, Parts A and B
  • Copenhagen, Denmark, June 11–15, 2012
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4473-1
  • Copyright © 2012 by ASME

abstract

In this research, a nonlinear shunted piezoelectric is proposed for practical realization of nonlinear vibration absorbers. The main advantage of the electro-mechanical system is that non-linearity can be readily achieved by proper circuit design. First, the dynamics of a SDOF linear mechanical oscillator coupled to a nonlinear shunted piezoelectric attachment is studied. Both the nonlinear normal modes and the nonlinear forced response of the electro-mechanical system are investigated. Numerical simulation reveals that under certain condition, a fast, passive energy transfer from the mechanical oscillator to the piezoelectric attachment is observed. The essentially nonlinear absorber is also able to work over broad frequency band under periodic excitation with a smaller inductance requirement compared with the linear piezoelectric vibration absorber. The application of piezoelectric vibration absorbers to simplified blade-disk structures is also taken into consideration. It is shown that when blades become mistuned, the nonlinear vibration absorber yields better vibration mitigation performance than the linear shunt circuit does. Namely, the blade mistuned vibration could be reduced by the nonlinear effect in the piezoelectric absorber. However, to improve the performance of piezoelectric-based vibration absorber, a systematic and rigorous study of the optimal tuning design deserves further investigation.

Copyright © 2012 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In