| 具有干摩擦散乱失谐的叶盘受迫响应特性 |
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| 引用本文： | 王红建,贺尔铭,余仕侠.具有干摩擦散乱失谐的叶盘受迫响应特性[J].航空动力学报,2006,21(4):711-715. |
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| 作者姓名： | 王红建 贺尔铭 余仕侠 |
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| 作者单位： | 西北工业大学,航空学院,陕西,西安,710072;西北工业大学,航空学院,陕西,西安,710072;西北工业大学,航空学院,陕西,西安,710072 |
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| 摘 要： | 阻尼件是叶盘结构中起减振作用的主要部件,而阻尼件的干摩擦散乱失谐会影响其在叶盘振动中的减振作用。本文利用谐波平衡法与快速傅立叶变换技术,对具有非线性干摩擦力的叶盘受迫响应进行了数学建模,仿真分析了叶盘系统在各种耦合、粘性阻尼比、干摩擦强度、干摩擦散乱失谐程度等参数影响下的受迫响应规律。研究结果显示,叶盘系统在弱耦合和粘性阻尼比较大的情况下,干摩擦散乱失谐会导致叶盘共振幅值显著增大。
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| 关 键 词： | 航空、航天推进系统 干摩擦散乱失谐 叶盘 受迫振动 非线性 谐波平衡法 |
| 文章编号： | 1000-8055(2006)04-0711-5 |
| 收稿时间： | 2005/9/23 0:00:00 |
| 修稿时间： | 2005年9月23日 |
Forced response characteristics of bladed disks with disordered dry friction |
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| WANG Hong-jian,HE Er-ming and YU Shi-xia.Forced response characteristics of bladed disks with disordered dry friction[J].Journal of Aerospace Power,2006,21(4):711-715. |
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| Authors: | WANG Hong-jian HE Er-ming and YU Shi-xia |
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| Institution: | College of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China |
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| Abstract: | Dampers in bladed disks are main components for reducing vibration.The dry friction disorder among those dampers can affect their damping performance.In this paper,the harmonic balance method and the technique of fast Fourier transmission were employed to simulate the forced response of bladed disks with nonlinear dry friction.The characteristics of bladed disks with disordered dry friction were investigated and analyzed under different coupling,viscous damping ratio,dry friction strength and the degree of dry friction disorder.The study indicates that the disorder of dry friction can significantly increase the resonant response of bladed disks,especially in the system with weaker coupling and larger viscous damping ratio. |
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| Keywords: | aerospace propulsion system dry friction disorder bladed disk forced vibration non-linearity harmonic balance method |
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