由涂层引入失谐的整体叶盘集中参数建模与振动特性分析

doi:10.3901/JME.2019.19.043

机械工程学报 ›› 2019, Vol. 55 ›› Issue (19): 43-50.doi: 10.3901/JME.2019.19.043

• 特邀专栏：高端透平机械动力学 • 上一篇下一篇

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由涂层引入失谐的整体叶盘集中参数建模与振动特性分析

李然^1,2, 孙伟^1,2

1. 东北大学机械工程与自动化学院沈阳 110819;
2. 东北大学航空动力装备振动及控制教育部重点实验室沈阳 110819

收稿日期:2018-10-23 修回日期:2019-05-29 出版日期:2019-10-05 发布日期:2020-01-07
通讯作者: 孙伟(通信作者),男,1975年出生,教授,博士研究生导师。主要研究方向为机械系统动力学分析及振动控制。E-mail:weisun@mail.neu.edu.cn
作者简介:李然,女,1994年出生。主要研究方向为硬涂层叶盘集中参数建模与分析。E-mail:ranli_2016@163.com
基金资助:
国家自然科学基金资助项目（51775092）。

Lumped-parametric Modeling and the Analysis of Vibration Characteristics of the Mistuned Blisk Introduced by Hard Coating

LI Ran^1,2, SUN Wei^1,2

1. School of Mechanical Engineering&Automation, Northeastern University, Shenyang 110819;
2. Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education, Northeastern University, Shenyang 110819

Received:2018-10-23 Revised:2019-05-29 Online:2019-10-05 Published:2020-01-07

摘要/Abstract

摘要： 为了研究涂层参数失谐对整体叶盘振动特性的影响，创建含涂层的两自由度扇区集中参数模型，引入四种常见的主动失谐形式，详细分析了涂层质量、刚度、阻尼等参数失谐对系统振动特性的影响规律。创建含涂层参数失谐的整体叶盘集中参数模型，并由涂层引入常用的谐波、交替、线性及伪谐波四种形式的主动失谐。建立失谐后整体叶盘结构的运动方程，确定求解其固有频率及振动响应的方法，并给出了评价失谐程度的量化参数。通过实例分析了由涂层引入主动失谐后叶盘结构的振动特性。研究表明，叶盘系统发生由涂层引起的主动失谐后，系统最大响应随失谐量的增大呈现先上升后下降的趋势，有“阈值”现象。

关键词: 失谐振动, 硬涂层, 整体叶盘, 集中参数建模, 振动特性

Abstract: In order to study the influence of mistuned coating parameters on the vibration characteristics of the blisk, a lumped-parametric model with two-degree-of-freedom sector is created. Four common types of intentional mistuning are introduced, and the influence of mistuned parameters such as the coating mass, stiffness and damping on the vibration characteristics of the system are analyzed in detail. The lumped parameter model with mistuned coating parameters is provided, and four common types of intentional mistuning such as harmonic, alternating, linear, and pseudo-harmonic are introduced by the coating. The equation of motion of the mistuned hard-coating blisk is established, and the method of solving the natural frequency and vibration response of the blisk is determined. The quantitative parameters for evaluating the strength of mistuning were given. Vibration characteristics of mistuned blisk introduced by hard coating is analyzed by an example. The results show that after the intentional mistuning produced by the coating, the maximum response of the blisk rapidly increases with increasing mistuning up to a certain value, but the response decrease with a further increase in mistuning, so the "threshold" phenomenon exist for this mistuning system.

Key words: mistuned vibration, hard coating, blisk, lumped-parametric model, vibration analysis

中图分类号:

V231
TB535

李然, 孙伟. 由涂层引入失谐的整体叶盘集中参数建模与振动特性分析[J]. 机械工程学报, 2019, 55(19): 43-50.

LI Ran, SUN Wei. Lumped-parametric Modeling and the Analysis of Vibration Characteristics of the Mistuned Blisk Introduced by Hard Coating[J]. Journal of Mechanical Engineering, 2019, 55(19): 43-50.

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由涂层引入失谐的整体叶盘集中参数建模与振动特性分析

Lumped-parametric Modeling and the Analysis of Vibration Characteristics of the Mistuned Blisk Introduced by Hard Coating

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