Vibration control of plates through a periodic array of shunted piezoelectric patches with negative capacitance circuits

A two-dimensional array of piezoelectric transducer (PZT) shunted on negative capacitance circuit is designed and applied to achieve broadband vibration reduction of a flexible plate over tunable frequency bands. Each surface-bonded patch is connected to a single independent negative capacitance synthetic circuit. A finite element-based design methodology is used to predict and optimize the attenuation properties of the smart structure. The predictions are then experimentally validated by measuring the harmonic response of the plate and evaluating some derived quantity such as the loss factor and the kinetic energy ratio. The validated model is finally used to explore different configurations with the aim of defining some useful design criteria.

[1]  Owen G. Thorp,et al.  Attenuation of wave propagation in fluid-loaded shells with periodic shunted piezoelectric rings , 2005 .

[2]  Eugène Dieulesaint,et al.  Elastic Waves in Solids II , 2000 .

[3]  Mohamed Ichchou,et al.  Semi-active optimization of 2D wave dispersion into shunted piezo-composite systems for controlling acoustic interaction , 2012 .

[4]  J. Hollkamp Multimodal Passive Vibration Suppression with Piezoelectric Materials and Resonant Shunts , 1994 .

[5]  Daniel L. Palumbo,et al.  A New Approach to Identify Optimal Properties of Shunting Elements for Maximum Damping of Structural Vibration Using Piezoelectric Patches , 2004 .

[6]  M. Ruzzene,et al.  Vibration and Wave Propagation Control of Plates with Periodic Arrays of Shunted Piezoelectric Patches , 2009 .

[7]  Robert L. Forward,et al.  Electronic damping of vibrations in optical structures. , 1979, Applied optics.

[8]  Mohamed Ichchou,et al.  Structural energy flow optimization through adaptive shunted piezoelectric metacomposites , 2012 .

[9]  Shu-yau Wu,et al.  Multiple PZT transducers implemented with multiple-mode piezoelectric shunting for passive vibration damping , 1999, Smart Structures.

[10]  Manuel Collet,et al.  Structural multi-modal damping by optimizing shunted piezoelectric transducers , 2011 .

[11]  Nesbitt W. Hagood,et al.  Damping of structural vibrations with piezoelectric materials and passive electrical networks , 1991 .

[12]  Y. Bobrovnitskiĭ,et al.  Conservation laws in vibration theory , 2004 .

[13]  Andrew J. Fleming,et al.  Synthetic impedance for implementation of piezoelectric shunt-damping circuits , 2000 .