Spectrum Analysis of a Coaxial Dual-Rotor System with Coupling Misalignment

• Published in: Shock and vibration Vol. 2020; no. 2020; pp. 1 - 19
• Main Authors: Miao, Jingjing, Yang, Dalian, Jiang, Lingli, Li, Xuejun, Huang, Liangpei, Zhang, Hongxian, Zhang, Fanyu
• Format: Journal Article
• Language: English
• Published: Cairo, Egypt Hindawi Publishing Corporation 2020; Hindawi; John Wiley & Sons, Inc; Wiley
• Subjects: Computer simulation; Coupling; Excitation; Fault diagnosis; Finite element method; Jet engines; Journal bearings; Load; Machinery; Mathematical models; Military helicopters; Misalignment; Resonant frequencies; Rotors; Spectrum analysis; Timoshenko beams; Turbines; Vibration

The finite element model of a dual-rotor system was established by Timoshenko beam element. The dual-rotor system is a coaxial rotor whose supporting structure is similar to that of an aero-engine rotor system. The inner rotor is supported by three bearings, which makes it a redundantly supported ro...