| 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
2. 中国人民解放军空军驻京丰地区军代表室,北京,100074 |
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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: | Center of Aviation Safety Technology, CAAC |
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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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