| Analytical Method Determining Resonant Response of Blade with Dry Friction Damper |
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| 作者姓名： | 丁千 周翔 |
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| 作者单位： | School of Mechanical Engineering Tianjin University，School of Mechanical Engineering Tianjin University，Tianjin 300072 China，Tianjin 300072 China |
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| 基金项目： | 国家自然科学基金;教育部高等学校博士学科点专项科研基金 |
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| 摘 要： | Service failures of turbine blades in many instancescan be attributedto highcyclefatigue caused bylarge reso-nance stress .As dryfrictioninterface may be the most im-portant source of energy dissipation,thefriction damperis atypical devicetoreduce vibrati…
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| 关 键 词： | 摩擦阻尼器 溶液分解 共振技术 技术性能 |
| 修稿时间： | 2007-01-29 |
Analytical Method Determining Resonant Response of Blade with Dry Friction Damper |
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| DING Qian,ZHOU Xiang.Analytical Method Determining Resonant Response of Blade with Dry Friction Damper[J].Transactions of Tianjin University,2007,13(4):291-296. |
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| Authors: | DING Qian ZHOU Xiang |
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| Institution: | School of Mechanical Engineering, Tianjin University, Tianjin 300072,China |
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| Abstract: | This paper presents an analytical method for determining the steady state response of blade with dry friction damper. A complete vibration cycle is divided into four successive intervals. The system possesses linear vibration characteristic during each of these intervals, which can be determined by using analytical solution forms. An analytical solution of the system periodic motion can be formed by combining the four intervals' solutions. Numerical simulation shows that there are two response peaks in passage through the resonant frequencies of the system without the friction damper and with the friction damper fully stuck respectively. The amplitude of the first peak can be reduced up to 90% by adjusting the value of normal pressure force between the damper's contacting surfaces. Whereas to determine the optimum pressure force, reduction of amplitudes of two peaks should be considered together. |
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| Keywords: | dry friction damper analytical solution stick-slip resonance |
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