测控技术2024，Vol.43Issue(8)：29-36,8.DOI:10.19708/j.ckjs.2024.08.303
一种用于转子叶片叶尖定时法研究的装置设计及应用
Design and Application of a Device for Study on Rotor Blades Tip-Timing Menthod
摘要
Abstract
In order to validate the accuracy of the identification results(vibration frequency and amplitude of blades)obtained by the circumferential Fourier fit(CFF)method in the tip-timing technique,so as to apply the test results obtained by this method to evaluate the safety margin of rotor blades dynamic strength,a simple simulated test device with simultaneous strain gauge method and CFF method is designed,and experimental re-search is conducted.The result of the research shows that in the identification of blade vibrating amplitude,the difference between strain gauge method and CFF method is between±15％;in the identification of blade vi-brating frequency,the difference between strain gauge method and CFF method is between±1.8％;by means of finite element analysis,the measured results of the tip-timing method are reversely calculated as dynamic stress,well then the dynamic stress of blades in actual work can be understood.The proposed method is simple and easy,which is very meaningful in engineering applications.关键词
转子叶片/叶尖定时/周向傅里叶拟合/应变片法Key words
rotor blades/tip-timing/circumferential Fourier fit/strain gauge method引用本文复制引用
侯明,栾想,闫贺,孙宇星,刘杰薇..一种用于转子叶片叶尖定时法研究的装置设计及应用[J].测控技术,2024,43(8):29-36,8.基金项目
国家自然科学基金重大研究计划培育项目(92060105) （92060105）
