Research on Automatic Test System of Engine Blade Natural Frequency

作     者：LU Yonghua LIU Jingjing YANG Haibo HUANG Chuan MA Zhicheng 陆永华;刘京京;杨海波;黄川;马志成

作者机构：College of Mechanical and Electrical EngineeringNanjing University of Aeronautics and AstronauticsNanjing 210016P.R.China College of Mechanical EngineeringNanjing Institute of Industry TechnologyNanjing 210016P.R.China 

基　　金：supported by the National Natural Science Foundation of China (No.51975293) Aeronautical Science Foundation of China (No.2019ZD052010) Postgraduate Research & Practice Innovation Program of NUAA (No.xcxjh20230502) 

出 版 物：《Transactions of Nanjing University of Aeronautics and Astronautics》 (南京航空航天大学学报（英文版）)

年 卷 期：2024年第41卷第4期

页      码：476-487页

摘      要：Blades are one of the important components on aircraft *** they break due to vibration failure,the normal operation of the entire engine will be ***,it is necessary to measure their natural frequency before installing them on the engine to avoid *** present,most blade vibration testing systems require manual operation by operators,which has high requirements for operators and the testing process is also very ***,the testing efficiency is low and cannot meet the needs of efficient *** solve the current problems of low testing efficiency and high operational requirements,a high-precision and high-efficiency automatic test system is *** testing accuracy of this system can reach ±1%,and the testing efficiency is improved by 37% compared to manual ***,the influence of compression force and vibration exciter position on natural frequency test is analyzed by amplitude-frequency curve,so as to calibrate servo cylinder and fourdimensional motion ***,the sine wave signal is used as the excitation to sweep the blade linearly,and the natural frequency is determined by the amplitude peak in the frequency ***,the accuracy experiment and efficiency experiment are carried out on the developed test system,whose results verify its high efficiency and high precision.

主 题 词：blade vibration failure natural frequency automatic test system 

学科分类：08[工学] 0804[工学-材料学] 0802[工学-机械学] 0835[0835] 080201[080201] 

核心收录：

D　O　I：10.16356/j.1005-1120.2024.04.005

馆 藏 号：203140829...