Vibration response analysis of rubbing faults on a dual-rotor bearing system

被引：71

作者：

Wang, Nanfei ^{[1
]}

Jiang, Dongxiang ^{[1
]}

Behdinan, Kamran ^{[2
,3
]}

机构：

[1] Tsinghua Univ, Dept Thermal Engn, State Key Lab Control & Simulat Power Syst & Gene, Beijing 100084, Peoples R China

[2] Univ Toronto, Dept Mech & Ind Engn, Adv Res Lab Multifunct Light Weight Struct, Toronto, ON, Canada

[3] Univ Toronto, Dept Mech & Ind Engn, Toronto, ON, Canada

来源：

ARCHIVE OF APPLIED MECHANICS | 2017年 / 87卷 / 11期

关键词：

Aero-engine; Dual-rotor system; Unbalance-rubbing coupling faults; Lankarani-Nikravesh model; Dynamic characteristics; RUB-IMPACT; DYNAMIC CHARACTERISTICS; NONLINEAR DYNAMICS; FRICTION MODEL; STATOR; PREDICTION; STABILITY;

D O I：

10.1007/s00419-017-1299-9

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In order to study the dual-rotor system's rubbing fault, a new dynamic model is established. The unbalance and the rubbing faults are modeled, respectively. Considering the softening characteristics of casing, the Lankarani-Nikravesh model is utilized to describe the impact force between the disk and fixed limiter. The numerical integral method is applied to obtain system's dynamic behavior, and the characteristics of the rubbing faults are analyzed by time-domain waveform, 3D waterfall plot and spectrum cascades. The influences of rotational speed ratio, initial clearance, mass eccentricity and inter-shaft bearing stiffness on the dynamic characteristics are investigated. The vibration displacement of the low-pressure rotor is collected from the impact experiment performed on a dual-rotor test rig. The analysis result of simulation is identical with the experiment result. Consequently, this method can be used to study characteristics of rubbing faults of dual-rotor bearing system efficiently.

引用

页码：1891 / 1907

页数：17

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