Effects of dry friction damping on forced vibration response of mistuned bladed disk

被引:1
|
作者
Liu Y. [1 ]
Shangguan B. [2 ]
Xu Z. [3 ]
机构
[1] School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an
[2] Xi'an Thermal Power Research Institute Co., Ltd., Xi'an
[3] State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an
来源
Xu, Zili | 2016年 / Xi'an Jiaotong University卷 / 50期
关键词
Antialiasing hybrid frequency-time domain method; Dry friction damping; Mistuned blade disc; Three-dimensional friction contact;
D O I
10.7652/xjtuxb201602019
中图分类号
学科分类号
摘要
In the existing vibration characteristics research of mistuned bladed disk system with nonlinear dry friction damping structures, we have to encounter establishment of nonlinear friction contact model and solution of high degree of freedom nonlinear systems. Here the anti-aliasing hybrid frequency-time domain method and three-dimensional microslip friction contact model are chosen to evaluate the forced vibration response of a mistuned bladed disk with dry friction damping structure. The friction damping effect on forced vibration response of mistuned bladed disk, and the vibration characteristics of mistuned bladed disk under the condition of friction mistuned are investigated. It is found that the nonlinear friction vibration damping structure enables to inhibit vibration of mistuned bladed disk system with a 9.53% average amplitude decrease. The friction damping effect on each blade is different, and the corresponding optimal initial normal load of each blade reaching the optimal damping effect is not identical too. The normal contact stiffness mistuning and initial normal load mistuning also have the damping effect on the mistuned bladed disk. When the mistuned strength and mistuned distribution of the normal contact stiffness mistuning are the same as those of mistuned bladed disk, the friction damping effect attenuates in comparison with the situation of friction tuned, and the average decline of vibration amplitude reduces by 3.45%. © 2016, Editorial Office of Journal of Xi'an Jiaotong University. All right reserved.
引用
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页码:111 / 117
页数:6
相关论文
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