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首页> 外文期刊>Mechanical systems and signal processing >Effects of blade's interconnection on the modal characteristics of a shaft-disk-blade system
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Effects of blade's interconnection on the modal characteristics of a shaft-disk-blade system

机译：刀片互连对轴盘叶片系统模态特性的影响

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摘要

Present work has further developed a packet blade-disk-shaft coupling model based on previous work to interpret the effects of tuned/mistuned lacing wire on the coupled modal properties. In the developed model, the flexible bladed disk system's swing motion inducing by shaft bending is further considered. Corresponding model validation indicates that the improved model is more accurate than our previous model. Present analysis has three parts: in the first part numerical results focus on the effects of varying lacing wire location (X_L) and stiffness ratio (K_L) on the coupling behavior between subcomponents. As the lacing wire participating in the coupling vibration, the SDB, DB_2, and BB mode shift to LSDB, LDB_2, and LB mode, while the TDB mode keeps in constant. The frequency values of new coupling modes conspicuously increase, altering the order of occurrence of the dominant modes as well as the patterns of coupling modes. In the second part, a mistuning severity factor has been introduced to represent the lacing wire damage level and its effects on different coupled modes are summarized clearly. Then further analysis points out that the sensitivity of mode frequencies to lacing wire damage depends on a series of factors. The conclusions can provide a reference for the mistuning identification in the shaft-disk-blade packet system. Finally, the effects of rotational speed on the tuned/mistuned shaft-disk-blade packet are compared and depicted in the Campbell diagram.
机译：目前的工作进一步开发了一种基于先前的工作的包刀片轴耦合模型，以解释调谐/雾化系带线对耦合模态特性的影响。在开发的模型中，进一步考虑柔性叶片磁盘系统的轴弯曲的摆动运动。相应的模型验证表明改进的模型比以前的模型更准确。目前的分析有三个部分：在第一部分中，数值结果侧重于不同的系带线位置（X11）和刚度比（K_L）对子组件之间的耦合行为的影响。作为参与耦合振动的系带线，SDB，DB_2和BB模式移至LSDB，LDB_2和LB模式，而TDB模式保持恒定。新耦合模式的频率值显着增加，改变主导模式的发生顺序以及耦合模式的模式。在第二部分中，已经引入了雾化严重性因素来表示系带导线损伤水平，并清楚地概述了对不同耦合模式的影响。然后进一步的分析指出，模式频率对系带导线损坏的灵敏度取决于一系列因素。结论可以提供轴盘 - 刀片包系统中的雾化识别的参考。最后，在坎贝尔图中比较和描绘了旋转速度对调谐/雾化轴盘 - 刀片包的影响。

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  • 来源
    《Mechanical systems and signal processing》 |2021年第1期|106955.1-106955.19|共19页
  • 作者

    Houxin She; Chaofeng Li; Qiansheng Tang; Bangchun Wen;

  • 作者单位

    School of Mechanical Engineering and Automation Northeastern University Shenyang 1108J9 China College of Energy and Power Engineering Nanjing University of Aeronautics and Astronautics Jiangsu Province Key Laboratory of Aerospace Power System Nanjing 210016 China;

    School of Mechanical Engineering and Automation Northeastern University Shenyang 1108J9 China Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education Northeastern University Shenyang 110819 China;

    School of Mechanical Engineering and Automation Northeastern University Shenyang 1108J9 China;

    School of Mechanical Engineering and Automation Northeastern University Shenyang 1108J9 China Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education Northeastern University Shenyang 110819 China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Lacing wire; Shaft-disk-blade; Coupling modal characteristics; Mistuning;

    机译：系带丝;轴盘叶片;耦合模态特征;迷失;

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