Study on Damping Structure Parameters of Blades Based on the Microslip Model

徐自力; 谷伟伟; 吕强; 王尚锦

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Study on Damping Structure Parameters of Blades Based on the Microslip Model

更新时间：2025-12-08

- Study on Damping Structure Parameters of Blades Based on the Microslip Model
- Vol. 41, Issue 5, Pages: 507-511(2007)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK263.3;V231.92
- Online First：10 May 2007，
  
  Published：2007
- 稿件说明：
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徐自力, 谷伟伟, 吕强, et al. Study on Damping Structure Parameters of Blades Based on the Microslip Model[J]. 2007, 41(5): 507-511.
DOI：

徐自力, 谷伟伟, 吕强, et al. Study on Damping Structure Parameters of Blades Based on the Microslip Model[J]. 2007, 41(5): 507-511. DOI：

摘要

基于单边微动滑移的干摩擦阻尼模型

采用Timoshenko梁单元模化叶片

建立了带干摩擦阻尼结构叶片的动力学方程.针对该微分方程的非线性特点

采用一阶谐波平衡法

进行了动力响应的计算分析.研究了阻尼器的正压力、位置、截面拉伸刚度

以及激振力的位置和大小等阻尼结构参数对叶片系统响应的影响.研究结果表明:阻尼器的正压力和截面拉伸刚度存在一个最优值

使系统响应最小; 阻尼器的位置对共振频率有较大的影响; 激振力的大小和位置同样影响系统的动力特性.研究结果为叶片的最佳阻尼结构设计提供理论依据.

Abstract

Equations of motion for damped blades were established using the finite element method

in which the friction dampers of blades were regarded as a microslip model and the blade structures was modeled with the Timoshenko beam. The harmonic balance method(HBM)was employed to solve the forced response of damped blades considering nonlinear feature of differential equations. Influence of parameters of damping structures such as normal force

location and tensile stiffness of the damper

location and magnitude of excitation force

on forced response of blades was studied. The calculated results show that the optimal normal force and tension stiffness exist for the system with the least forced response. Moreover

the location of the damper has a big effect on the resonance frequency of the system

and the location and magnitude of the excitation force also affect the dynamic characteristics of the system.

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references

Wang J H, Chen W K. Investigation of the vibration of a blade with friction damper by HBM[J]. Journal of Engineering for Gas Turbine and Power, 1993, 115:294-299.

徐自力,李辛毅,袁奇,等.用改进的摩擦模型计算带阻尼结构叶片的响应[J]. 西安交通大学学报,1998,32(1):42-44.

Xu Zili,Li Xinyi,Yuan Qi,et al. Analysis of response blades with friction damping interconnector using a new friction model[J].Journal of Xi'an Jiaotong University,1998,32(1):42-44.

Chen J J, Yang B D, Menq C H. Periodic forced response of structures having three-dimensional frictional constraints[J]. Journal of Sound and Vibration, 2000, 229(4):755-792.

Menq C H, Bielak J, Griffin J H. The influence of microslip on vibratory response: part 1 [J]. Journal of Sound and Vibration, 1986, 107(2): 279-293.

Csaba G. Modeling microslip friction damping and its influence on turbine blade vibrations [D]. Linkoping,Sweden:Linkoping University, 1998.

Lazan B J. Damping in materials and members in structural mechanics[M]. London:Pergamon Press Ltd, 1968.

王勖成,邵敏. 有限单元法基本原理和数值方法 [M]. 北京:清华大学出版社,1995.

Wang H, Chen W K. Investigation of the vibration of a blade with friction damper by HBM[J]. ASME Journal of Engineering for Gas Turbines and Power,1993, 115:294-299.

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