中国机械工程 ›› 2011, Vol. 22 ›› Issue (12): 1387-1392.

• 机械基础工程 • 上一篇    下一篇

考虑控制电路失谐的叶盘结构振动控制研究

王艾伦;李林   

  1. 中南大学现代复杂设备设计与极端制造教育部重点实验室,长沙,410083
  • 出版日期:2011-06-26 发布日期:2011-07-01
  • 基金资助:
    国家重点基础研究发展计划(973计划)资助项目(2007CB707706)
    National Program on Key Basic Research Project (973 Program)(No. 2007CB707706)

Study on Vibration Control of Bladed Disk Structure Considering Circuit Mistuning

Wang Ailun;Li Lin
  

  1. Key Laboratory of Modern Complex Equipment Design and Extreme Manufacturing(Central South University),Changsha,410083
  • Online:2011-06-26 Published:2011-07-01
  • Supported by:
    National Program on Key Basic Research Project (973 Program)(No. 2007CB707706)

摘要:

以适用于多能域系统建模的功率键合图为工具,建立了叶盘结构与压电回路耦合动力学模型,研究了电路参数失谐对叶盘结构振动特性的影响规律,并进行了验证。研究结果表明:控制电路失谐会使叶盘结构的动力学特性受到影响,且其影响大小与失谐支路离失谐叶片的距离有关,距离越远影响越小;在同一支路的各个参数中,电阻失谐对叶盘结构的最大振幅影响最大,电容失谐不影响叶盘最大振幅。此外,研究发现:控制电路失谐不一定会加剧叶盘结构振动局部化,在某些电路失谐模式下,叶盘结构振动局部化程度反而减小,说明谐调压电循环周期电路对失谐叶盘结构振动的控制效果并非最佳,而设计适当失谐的压电控制电路反而能得到更好的振动控制效果。

关键词:

Abstract:

A dynamic model of bladed disk structure with coupled piezoelectric network was established based on bond graph,which is an effective tool for modeling of system with multi-energy domains.The effects of circuit mistuning on vibration characteristics of bladed disk were investigated.
Then an experiment was design to validate the conclusion.The results show
that circuit mistuning will influence the dynamic characteristics of bladed disk,the effect is related to the distance between the blade and mistuned shunt circuit,the greater the distance the smaller the impact.And resistance mistuning makes the greatest effect on blade maximum amplitude, while capacitance mistuning has no effect.Additionally,the study indicates that circuit mistune does not always aggravate vibration localization in bladed disk,which may be decreased under certain circuit mistune mode. It indicates that compared to tuned piezoelectric network, an appropriate mistuned network can suppress bladed disk vibration better.

Key words: bladed disk structure, active vibration control, piezoelectric network, mistuning

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