| 叶片随机失谐与叶盘结构共振特性分析 |
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| 引用本文： | 王红建,贺尔铭,赵志彬. 叶片随机失谐与叶盘结构共振特性分析[J]. 西北工业大学学报, 2011, 29(2) |
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| 作者姓名： | 王红建 贺尔铭 赵志彬 |
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| 作者单位： | 西北工业大学航空学院,陕西西安,710072 |
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| 摘 要： | 叶片随机失谐对叶盘动力特性具有重要影响,导致叶盘系统模态局部化和受迫响应的急剧增大.文章针对叶片随机失谐,利用Monte Carlo分析方法,研究失谐叶盘结构模态局部化特性以及不同系统频率下的共振响应特性.随机失谐分布采用质量失谐和刚度失谐两种形式,着重分析其对叶片占优系统模态族的局部化程度、相应失谐共振响应及其最大振幅放大因子的影响规律.研究结果表明,失谐对叶盘低阶弯曲模态族的局部化程度影响最大,对应的最大振幅放大因子也相应较大.
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| 关 键 词： | 叶盘结构 随机失谐 共振特性 Monte Carlo 振幅放大因子 |
Investigating Further Resonant Response Characteristics of Disk with Randomly Mistuned Blades |
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| Wang Hongjian,He Erming,Zhao Zhibin. Investigating Further Resonant Response Characteristics of Disk with Randomly Mistuned Blades[J]. Journal of Northwestern Polytechnical University, 2011, 29(2) |
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| Authors: | Wang Hongjian He Erming Zhao Zhibin |
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| Abstract: | Aim.The second paragraph of the introduction of the full paper points out what we believe to be the shortcomings of Refs.2 through 5;so,we propose investigating further.Sections 1,2 and 3 explain the results of our investigation.The core of section 2 is that we use the Monte Carlo method to study the mode localization characteristics of a disk with randomly mistuned blades under the condtions of mass mistuning and stiffness mistuning respectively,focusing on the blade-dominated mode.The core of section 3 co... |
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| Keywords: | resonance turbomachine blades Monte Carlo methods disk randomly mistuned blade resonant response maximum amplitude magnification factor |
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