The effective properties of 1-3 piezocomposites are used to examine their passive vibration damping characteristics. An aluminum cantilever beam bonded with 1-3 piezocomposite dampers is modeled by means of “ANSYS” and “SIMULINK” softwares to investigate the dynamic behavior of the system. A method of determining the damping ratio introduced by the piezocomposite damper in conjunction with a simple resistive electrical circuit is established. The effect of volume fraction of the 1-3 piezocomposite on the damping of the system is analyzed. Damping ratio is observed to increase with rising volume fraction. At low volume fractions, the participation of piezoelectric fibers in the load-bearing pattern is to a lesser extent and hence the damping ratio is low. On the contrary as the volume fraction rises, the involvement of piezoelectric fibers increases resulting in higher damping ratios. Given that the inherent material damping in the aluminum beam is 0.0002, the additional damping provided by the bonded piezoelectric strips goes up to a maximum of 0.0042. Finally, the methodology developed in this paper can be used to model any type of vibratory structural system to determine the damping introduced by the piezocomposites.
Passive Vibration Damping of Aluminum by 1-3 Piezocomposites
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Saigal, A, Greif, R, & Nakhwa, S. "Passive Vibration Damping of Aluminum by 1-3 Piezocomposites." Proceedings of the ASME 2004 International Mechanical Engineering Congress and Exposition. Pressure Vessels and Piping. Anaheim, California, USA. November 13–19, 2004. pp. 47-55. ASME. https://doi.org/10.1115/IMECE2004-59433
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