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