Open AccessDynamic Analysis and Experimental Research on the Cantilever High Speed Rotor of Turbofan Engine
Author(s) -
Weijian Nie,
Wenfeng Deng,
Sheng Wan Yuan,
Yag Chen
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1081/1/012029
Subject(s) - turbofan , rotor (electric) , finite element method , structural engineering , critical speed , dynamic balance , helicopter rotor , vibration , dynamic pressure , cantilever , engineering , aerodynamics , damper , mechanical engineering , automotive engineering , physics , aerospace engineering , acoustics
Taking a simulated low-pressure rotor of a turbofan engine as the research object, the dynamic characteristic calculation model of the simulated low-pressure rotor with hollow shaft and solid shaft was established respectively by using the finite element method. The first three order critical speeds and mode shapes of the rotor were calculated systematically. The dynamic balance test of the simulated low-pressure rotor and the research on the damping effect of the squeeze film damper were carried out on the high-speed rotating test rig, and the dynamic characteristic test was completed in the full speed range. The results show that the finite element results agree well with the experimental results. The rationality of the rotor’s hollow shaft structure and rotor dynamic design was verified. The research provides reference and technical support for structural design, dynamic design and experimental research of real low-pressure rotor in engine.