等角贴敷压电分流片圆柱壳有限元建模及减振分析

doi:10.13229/j.cnki.jdxbgxb.20220416

摘要/Abstract

摘要：

考虑到圆柱壳结构容易出现花瓣型振型的特点，提出了一种等角贴敷多个压电分流片来对其进行振动抑制的方法。基于ANSYS平台，实现圆柱壳与压电片结构耦合，给出了分流电路中电子元件参数输入方法以及和压电片之间的耦合过程。以等角贴敷4个压电分流片圆柱壳为对象进行实例研究，证明了建模方法的合理性以及压电分流阻尼对圆柱壳的减振效果。在此基础上进行参数影响分析，可以发现：对于电阻分流电路存在一个最优电阻值可使减振效果最优；压电片贴敷在变形相对大的区域以及增大尺寸对减振有利。

关键词: 机械设计及理论, 压电分流, 薄壁圆柱壳, 有限元建模, 减振分析, 等角度贴敷

Abstract:

Considering that the cylindrical shell structure is prone to produce the petal-shaped mode shape， a method of vibration suppression is proposed to attach multiple piezoelectric shunt patches with equal-angle. Based on the ANSYS platform， the coupling between the cylindrical shell and the piezoelectric patches structure is realized， and the parameter input method of the electronic components in the shunt circuit and the coupling process between the piezoelectric patches are given. A case study is carried out on a cylindrical shell with four piezoelectric shunt patches attached with equal-angle as the object， and the rationality of the proposed finite element modeling method and the vibration reduction effect of the piezoelectric shunt damping patches on the cylindrical shell are proved by experiments. Based on the analysis of the influence of parameters， it can be found that there is an optimal resistance value for the resistance shunt circuit to achieve the optimal damping effect and it is beneficial to reduce vibration when piezoelectric patches are attached to the region with relatively large deformation and increasing the size of piezoelectric patches.

Key words: mechanical design and theory, piezoelectric shunt, thin-walled cylindrical shell, finite element modeling, vibration reduction analysis, equal-angle attachment

中图分类号:

V232.6

孙伟,杨俊. 等角贴敷压电分流片圆柱壳有限元建模及减振分析[J]. 吉林大学学报(工学版), 2024, 54(2): 365-374.

Wei SUN,Jun YANG. Finite element modeling and vibration reduction analysis of cylindrical shell structures with equal⁃angle attachment of piezoelectric shunt patches[J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(2): 365-374.

图/表 12

图1

图2

图3

表1

固有频率测试与仿真结果的对比"

阶次	实验 $f t e x t$ /Hz	仿真 $f A N S Y S$ /Hz	$f t e x t - f A N S Y S / f t e x t$ /%
1	390.63	391.70	0.27
2	434.38	421.34	3.00
3	537.50	547.32	1.83
4	681.25	663.08	2.67
5	912.50	906.26	0.68

表1

表2

图4

图5

图6

图7

图8

图9

图10

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