Controllable acoustic rectification in one-dimensional piezoelectric composite plates

2013 ◽  
Vol 114 (16) ◽  
pp. 164504 ◽  
Author(s):  
Xin-Ye Zou ◽  
Bin Liang ◽  
Ying Yuan ◽  
Xue-Feng Zhu ◽  
Jian-Chun Cheng
Keyword(s):  
Composite Plates ◽  
Piezoelectric Composite ◽  
One Dimensional

scholarly journals LQR and PID Algorithms for Vibration Control of Piezoelectric Composite Plates

Mechanika ◽  
2018 ◽  
Vol 24 (5) ◽  
Author(s):  
Madjid EZZRAIMI ◽  
Rachid TIBERKAK ◽  
Abdelkader MELBOUS ◽  
Said RECHAK
Keyword(s):  
Vibration Control ◽  
Composite Plates ◽  
Piezoelectric Composite

scholarly journals Creating the Coupled Band Gaps in Piezoelectric Composite Plates by Interconnected Electric Impedance

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1656 ◽  
Author(s):  
Lin Li ◽  
Zhou Jiang ◽  
Yu Fan ◽  
Jun Li
Keyword(s):  
Band Gap ◽  
Piezoelectric Materials ◽  
Composite Plates ◽  
Forced Response ◽  
Band Gaps ◽  
Piezoelectric Composite ◽  
Flexural Wave ◽  
Response Analysis ◽  
Flexural Waves ◽  
Single Wave

In this paper, we investigate the coupled band gaps created by the locking phenomenon between the electric and flexural waves in piezoelectric composite plates. To do that, the distributed piezoelectric materials should be interconnected via a ‘global’ electric network rather than the respective ‘local’ impedance. Once the uncoupled electric wave has the same wavelength and opposite group velocity as the uncoupled flexural wave, the desired coupled band gap emerges. The Wave Finite Element Method (WFEM) is used to investigate the evolution of the coupled band gap with respect to propagation direction and electric parameters. Further, the bandwidth and directionality of the coupled band gap are compared with the LR and Bragg gaps. An indicator termed ratio of single wave (RSW) is proposed to determine the effective band gap for a given deformation (electric, flexural, etc.). The features of the coupled band gap are validated by a forced response analysis. We show that the coupled band gap, despite directional, can be much wider than the LR gap with the same overall inductance. This might lead to an alternative to adaptively create band gaps.

scholarly journals A critical review of reduced one-dimensional beam models of piezoelectric composite beams

2019 ◽  
Vol 30 (8) ◽  
pp. 1148-1162 ◽  
Author(s):  
Luca Luschi ◽  
Giuseppe Iannaccone ◽  
Francesco Pieri
Keyword(s):  
Three Dimensional ◽  
Beam Width ◽  
Composite Beams ◽  
Piezoelectric Composite ◽  
Beam Equation ◽  
Transverse Stress ◽  
One Dimensional ◽  
Piezoelectric Energy ◽  
Wide Range ◽  
Piezoelectric Layers

Simplified one-dimensional models for composite beams with piezoelectric layers, which are intrinsically three-dimensional structures, are important for many applications, including piezoelectric energy harvesters. To reduce the dimensionality of the system, assumptions on the stress/strain state in the transverse direction are typically made. The most common are those of null transverse stress, used for narrow beams, null transverse deformation, used for wide beams, and continuous interface strain, suited for thin piezoelectric layers (we call this assumption thin film continuous). We show that the models based on these assumptions are often used uncritically for beam geometries for which large errors may result. In particular, null transverse stress fails even for narrow beams if the thickness is much smaller than the beam width. We give clear geometric criteria that, for any geometry, allow the selection of the most accurate model among the three. We also develop a single, unified beam equation encompassing the three models and compare the analytical results from this equation with finite element simulations over a wide range of beam lengths, widths, and layer thicknesses. The selection criteria and the unified beam equation form a valuable tool for fast and accurate design of composite piezoelectric beams.

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