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Effects of structural configuration on vibration control of smart laminated beams under random excitations?

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Abstract

The influence of structural configuration on vibration responses of smart laminated beams under random loading is studied. The effect of laminate configurations and locations of sensors/actuators in the smart system is also investigated. The layer-wise approximation for displacement and electric potential is utilized to construct the finite element model. The closed-loop control response is determined through an optimal control algorithm based on the Linear Quadratic Regulator (LQR). The correlation coefficient between the input random force and the applied actuating voltage for various configurations is also computed. It is revealed that for softer configurations, the correlation coefficient is higher than that for harder configurations. The study on the effect of sensor/actuator collocation pairs on optimal vibration control reveals that as the actuator shifts away from the sensor location, the peak of power occurs at higher frequency and becomes more distributed through all the frequencies in the domain.

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Authors and Affiliations

  1. School of Science and Engineering, Sharif University of Technology, International Campus, Kish Island, Iran

    Abolghassem Zabihollah

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  1. Abolghassem Zabihollah
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Correspondence to Abolghassem Zabihollah.

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This paper was recommended for publication in revised form by Associate Editor Eung-Soo Shin

A. Zabihollah received his Ph.D. in mechanical engineering from Concordia University, Montreal, Canada in 2007. He is the author of over 25 publications on smart structures, vibration suppression, and design optimization. Dr. Zabihollah is currently working at the international campus of Sharif University of Technology on Kish Island.

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Zabihollah, A. Effects of structural configuration on vibration control of smart laminated beams under random excitations?. J Mech Sci Technol 24, 1119–1125 (2010). https://doi.org/10.1007/s12206-010-0304-9

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  • DOI: https://doi.org/10.1007/s12206-010-0304-9

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