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Appl. Sci. 2017, 7(5), 496; doi:10.3390/app7050496

Random Vibration Suppression of a Truss Core Sandwich Panel Using Independent Modal Resonant Shunt and Modal Criterion

Research Center of Applied Mechanics, School of Mechano-Electronic Engineering, Xidian University, P.O. Box 187, Xi’an 710071, China
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Academic Editor: César M. A. Vasques
Received: 21 March 2017 / Revised: 28 April 2017 / Accepted: 9 May 2017 / Published: 11 May 2017
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Abstract

The aim of this paper is to suppress the random spatial vibration of the face sheet of a lightly damped truss core sandwich panel structure. Because broad-bandwidth vibration energy is concentrated in resonance peaks for lightly damped structures, an independent modal resonant shunt control method is utilized to add damping ratios to the chosen modes. In this method, each piezoelectric transducer is connected to a single resonant shunt which is tuned to control the vibration of a single mode. An H2 norm sensitivity-based modal criterion is proposed in order to determine which modes to control under a given bandwidth of excitation and input-output condition. Numerical simulation is implemented while control strategies with different controlled modes are compared. The result shows that the independent modal resonant shunt control method can suppress random vibration response of the face sheet by using only a few piezoelectric transducers, and the proposed modal criterion can be used to determine which modes to control. View Full-Text
Keywords: random vibration; independent modal resonant shunt; H2 norm; modal criterion random vibration; independent modal resonant shunt; H2 norm; modal criterion
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Guo, K.; Xu, Y. Random Vibration Suppression of a Truss Core Sandwich Panel Using Independent Modal Resonant Shunt and Modal Criterion. Appl. Sci. 2017, 7, 496.

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