| 带阻尼套筒的某型发动机低压涡轮部件的动力特性分析 |
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| 引用本文： | 曾亮,王孝利.带阻尼套筒的某型发动机低压涡轮部件的动力特性分析[J].航空动力学报,2009,24(12):2789-2795. |
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| 作者姓名： | 曾亮 王孝利 |
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| 作者单位： | 1.中国民用航空总局航空安全技术中心, 北京 100028 |
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| 摘 要： | 以某型发动机低压涡轮部件中带有阻尼套筒的后轴颈结构为例,运用有关理论对其固有特性和动力响应特性进行了全面的分析.对不同的激励形式(单点激励、旋转激励),阻尼套筒通过"移频"和干摩擦作用,均显示了良好的减振性能.在后轴颈和阻尼套筒的组合结构中,阻尼套筒的名义半径有最优值,此时干摩擦对结构振动的衰减效果最好;同时,对组合结构不同节径型的周波振动,阻尼套筒对振动的抑制效果也不同.通过该实例,对后轴颈的工程设计提出了合理的改进建议.
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| 关 键 词： | 干摩擦 减振 阻尼套筒 低压涡轮部件 |
| 收稿时间： | 12/9/2008 8:47:09 AM |
| 修稿时间： | 9/9/2009 11:05:52 AM |
Dynamic performance analysis of low pressure turbine(LPT) component with damping-sleeves |
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| ZENG Liang and WANG Xiao-li.Dynamic performance analysis of low pressure turbine(LPT) component with damping-sleeves[J].Journal of Aerospace Power,2009,24(12):2789-2795. |
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| Authors: | ZENG Liang and WANG Xiao-li |
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| Institution: | 1.Center of Aviation Safety Technology, General Administration of Civil Aviation of China, Beijing 100028, China2.The Chinese People's Liberation Army, Military Representative Office of Air Force in Beijing Fengtai, Beijing 100074, China |
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| Abstract: | The natural characteristics and dynamic response of low pressure turbine(LPT) component with damping-sleeve was analyzed by elastic and contact mechanics.For different disturbing forces(single radial exciter and rotating radial exciter),the damping-sleeve has shown great effect in vibration control with the action of "frequency-transfer" and friction damping.The simulation results confirm the validity of the proposed model and method.There are best parameters of damping-sleeve,which lead to the best effect of vibration control.The vibration control of damping-sleeve differs from various modal shapes of LPT component.Some suggestions are given for the design of labyrinth air seals in vibration control according to the analysis. |
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| Keywords: | dry friction vibration control damping-sleeve low pressure turbine(LPT)component |
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