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Ultra-thin Piezoelectric Lattice for Vibration Suppression in Pipe Conveying Fluid
Acta Mechanica Solida Sinica ( IF 2.2 ) Pub Date : 2020-07-03 , DOI: 10.1007/s10338-020-00174-z
Xiaofei Lyu , Fei Chen , Qingquan Ren , Ye Tang , Qian Ding , Tianzhi Yang

In this paper, an electrically active, ultra-thin, easy-to-implement, and tunable phononic crystal (PC)-based device is proposed to suppress excessive vibration in pipes conveying fluids. We demonstrate that this device can be realized by periodic implementation of piezoelectric patches with shunt circuits on the pipe acting as PCs for vibration suppression. The mathematical model of the pipe structure is simplified to the form of the Euler–Bernoulli beam, and the transfer matrix method and the finite element method are used to predict the effective bandgap. Conversion between mechanical vibration energy and electrical energy via the piezoelectric effect is observed. As a result, the pipe vibration is suppressed by combined Bragg and electroelastic bandgaps. The comparison with previous literature shows that this ultra-compact device provides a new solution for vibration and noise control in long-distance fluid-conveying pipe systems.



中文翻译:

用于抑制管道输送流体振动的超薄压电晶格

在本文中,提出了一种电活性,超薄,易于实现且可调谐的声子晶体(PC)的设备,以抑制输送流体的管道中的过度振动。我们证明了该设备可以通过在管道上周期性地使用压电分流器和并联电路来实现,该分流器充当PC来抑制振动。将管道结构的数学模型简化为Euler–Bernoulli梁的形式,并使用传递矩阵法和有限元法来预测有效带隙。通过压电效应观察到机械振动能和电能之间的转换。结果,通过布拉格和电弹性带隙的组合抑制了管道振动。

更新日期:2020-07-03
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