Research on vibration suppression of a mistuned blisk by a piezoelectric network

作     者：Jiuzhou LIU Lin LI Yu FAN Pengcheng DENG 

作者机构：School of Energy and Power Engineering Beihang University 100083 Beijing China Collaborative Innovation Center for Advanced Aero-Engine 100083 Beijing China Beijing Key Laboratory of Aero-engine Structure and Strength 100083 Beijing China Beijing Institute of Space Launch Technology 100076 Beijing China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2018年第31卷第2期

页      面：285-299页

核心收录：

学科分类：082502[工学-航空宇航推进理论与工程] 08[工学] 0825[工学-航空宇航科学与技术] 

基　　金：support of the National Natural Science Foundation of China (No. 51675022, 11702011) China Postdoctoral Science Foundation (No. 2017M610741) 

主　　题：Amplitude magnification Bi-periodic Blisk Mistuning Mono-periodic Parallel piezoelectric network Statistical analysis Vibration suppression 

摘      要：The work aims to provide a further investigation of the dynamic characteristics of an integral bladed disk（also called ‘blisk＇） with a Parallel Piezoelectric Network（PPN）. The PPN is constructed by parallelly interconnecting the piezoelectric patches distributed in the blisk. Two kinds of PPN are considered, namely mono-periodic PPN and bi-periodic PPN. The former has a piezoelectric patch in each sector, and the later has one patch every few sectors. The vibration suppression performance of both kinds of PPN has been studied through modal analysis, forced response analysis, and statistical analysis. The research results turn out that the PPN will only affect mechanical frequencies near the electrical frequency clusters slightly, and the bi-periodic PPN will make the nodal diameter spectrum of the modes more complex, but the amplitude corresponding to the new nodal diameter component is much smaller than that of the nodal diameter component corresponding to the mono-periodic system. The mechanical coupling between the blades and the disk plays an important role in the damping effect of the PPN, and it should be paid attention to in applications. The mono-periodic PPN can effectively suppress the amplitude magnification of the forced response induced by the mistuning of the blisk; meanwhile, it can mitigate the vibration localization of the mistuned electromechanical system. If piezoelectric patches are set only in part of the sectors, the bi-periodic PPN still has a vibration suppression ability, but the effect is related to the number and spatial distribution of the piezoelectric patches.