Experiment and characteristics extraction of rub-impact in rotor-support-case system

被引：0
作者：
机构：
[1] School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics
[2] Shenyang Engine Design and Research Institute, Aviation Industry Corporation of China
来源：
Liang, Z.-C. | 1600年 / Beijing University of Aeronautics and Astronautics (BUAA)卷 / 29期
关键词：
Blade; Case; Rotor; Rub-impact; Time-frequency analysis;
D O I：
10.13224/j.cnki.jasp.2014.03.017
中图分类号：
学科分类号：
摘要：
A rotor-support-case system simulated test rig was established by considering the structure characteristics and dynamic characteristics in blade to case rub-impact of aero-engine. The responses of both slight rub-impact and serious rub-impact were measured. Time frequency analysis methods, continuous wavelet transform and wavelet packet energy were used to perform the feature extraction of rotor and case. The results indicate that the response of case contents both high frequency signal and low frequency signal. The high frequency signal in case is mainly attributable to impact during slight rub-impact, and the friction effect is improved in serious rub-impact. As a conclusion, it may play a role in rub-impact fault diagnosis and identification.
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页码：604 / 611
页数：7
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