SSDI压电网络对失谐叶盘结构振动局部化的抑制研究

doi:10.3901/JME.2024.21.168

摘要/Abstract

摘要： 针对航空发动机失谐叶盘的振动局部化问题，提出了一种基于电感的同步开关阻尼方法(Synchronized switch damping on inductor, SSDI)。首先介绍了SSDI方法的运行原理，阐述其减振的机理；然后建立了叶盘的集中参数模型，推导出了失谐叶盘的动力学方程，包括开路状态以及SSDI分支、SSDI串联压电网络和SSDI并联压电网络四种工况；接着提出了一种新的评价因子—能量均匀化因子，并比较了四种工况下SSDI对失谐叶盘的局部化抑制效果；最后通过引入具有SSDI压电网络的双梁系统以模拟航空发动机的叶盘进行实验验证。结果表明SSDI并联压电网络不仅可以使用更少的开关来实现更好的减振效果，还可以使失谐叶盘的振动局部化大大改善，而且无需进行电学参数优化，具有非常显著的应用前景。

关键词: 失谐叶盘, 振动局部化, 同步开关阻尼, 压电网络, 能量均匀化

Abstract: A method named synchronized switch damping on inductor (SSDI) is proposed to aim at the issue of vibration localization in mistuned bladed-disk (blisk) structures of aero-engines. Firstly, the operational principle of the SSDI method is introduced, and its vibration reduction mechanism is analyzed. Subsequently, a lumped parameter model of the blisk is established, and the dynamic equations for the mistuned blisk are derived. Four cases are considered including open-circuit state, SSDI shunting, series-connected SSDI piezoelectric network, and parallel-connected SSDI piezoelectric network. Furthermore, a novel evaluation factor - the energy homogenization factor - is proposed, and the effectiveness of SSDI in suppressing localization of mistuned blisks under these four cases is compared. Finally, a dual-beam system with an SSDI piezoelectric network is employed for experimental validation, simulating the aero-engine's blisks. The results demonstrate that the parallel-connected SSDI piezoelectric network not only achieves better damping performance with fewer switches, but also significantly suppresses the vibration localization in mistuned blisks. Moreover, SSDI piezoelectric network does not need for electrical parameter optimization, showing significant potential for practical applications.

Key words: mistuned bladed-disk, vibration localization, synchronized switch damping, piezoelectric network, energy homogenization

中图分类号:

V231

张凤玲, 张大炜, 艾延廷, 田晶, 王志. SSDI压电网络对失谐叶盘结构振动局部化的抑制研究[J]. 机械工程学报, 2024, 60(21): 168-179.

ZHANG Fengling, ZHANG Dawei, AI Yanting, TIAN Jing, WANG Zhi. Suppression of Vibration Localization in Mistuned Bladed-disk Structures by SSDI Piezoelectric Network[J]. Journal of Mechanical Engineering, 2024, 60(21): 168-179.

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