涡轮叶片双层干摩擦阻尼器减振特性研究

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振动与冲击 ›› 2022, Vol. 41 ›› Issue (21) : 238-245.

论文

涡轮叶片双层干摩擦阻尼器减振特性研究

满吉鑫1,2,3,4，高庆1,2,3，曾武1,2,3，邱欣可1,2,3,4

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Vibration reduction characteristics of double-layer dry friction damper for turbine blade

MAN Jixin1,2,3,4, GAO Qing1,2,3, ZENG Wu1,2,3, QIU Xinke1,2,3,4

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摘要

研究了某型燃气轮机双层干摩擦阻尼结构对涡轮叶片减振效果的影响。首先，将干摩擦阻尼接触局部滑动模型进行拓展，建立整体-局部统一滑动模型；其次，对摩擦力-位移曲线进行仿真，得到不同滑动阶段的迟滞回曲线，并利用等效线性化方法和一次谐波平衡法计算得到阻尼装置等效刚度和阻尼；最后，建立涡轮叶片双层阻尼结构有限元模型，分析阻尼结构关键参数对叶片振动响应的影响。结果表明：双层阻尼结构减振效果比单层阻尼结构更具优势，双层阻尼结构使得系统在更小的正压力下达到更好的减振效果，且外激励在较大变化范围内叶片响应峰值维持在较低的水平。
关键词：减振；滑动模型；迟滞回曲线；一次谐波平衡法

Abstract

The influence of the double friction damper on the vibration reduction of a gas turbine blade was studied. Firstly, the microslip model of friction damper was extended to establish a macro-micro slip model. Secondly, the friction-displacement curve was simulated, and the hysteresis curves of different slip stages were obtained. The equivalent stiffness and damping of the damper were calculated by using the equivalent linearization method associated with first order harmonic balance method (HBM). Finally, the finite element model of double friction damper of turbine blade was established, and the influence of key parameters of the damper on blade vibration response was analyzed. The results show that the double friction damper has a better damping effect than the single friction damper. The double friction damper makes the system achieve a better damping effect under a smaller normal force, and the blade response peak value is maintained at a lower level within a wide range of external excitation.
Key words: reduced vibration; slip model; hysteresis curve; first order harmonic balance method

导出引用

满吉鑫1,2,3,4，高庆1,2,3，曾武1,2,3，邱欣可1,2,3,4. 涡轮叶片双层干摩擦阻尼器减振特性研究[J]. 振动与冲击, 2022, 41(21): 238-245

MAN Jixin1,2,3,4, GAO Qing1,2,3, ZENG Wu1,2,3, QIU Xinke1,2,3,4. Vibration reduction characteristics of double-layer dry friction damper for turbine blade[J]. Journal of Vibration and Shock, 2022, 41(21): 238-245

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