|
|||||
|
|
Nonlinear dynamic analysis of a rotor system with fixed-tilting-pad self-acting gas-lubricated bearings support |
|
| Authors: | Yanjun Lu Yongfang Zhang Xiaolei Shi Weimin Wang Lie Yu |
| Affiliation: | 1. School of Mechanical and Instrumental Engineering, Xi??an University of Technology, Xi??an, Shaanxi, 710048, People??s Republic of China 5. State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing, 400044, People??s Republic of China 2. School of Printing and Packaging Engineering, Xi??an University of Technology, Xi??an, Shaanxi, 710048, People??s Republic of China 3. Building Machinery Co., XCMG Construction Machinery Co., Ltd., Xuzhou, Jiangsu, 221004, People??s Republic of China 4. Institute of Mechatronics and Information Systems, Xi??an Jiaotong University, Xi??an, Shaanxi, 710049, People??s Republic of China |
| Abstract: | Based on the nonlinear theory, the unbalanced responses of a fixed-tilting-pad gas-lubricated journal bearing-rigid rotor system are investigated. A?time-dependent mathematical model is established to describe the pressure distribution of gas-lubricated journal bearing with nonlinearity. The rigid rotor supported by a fixed-tilting-pad self-acting gas-lubricated journal bearing is modeled. The differential transformation method has been employed to solve the time-dependent gas-lubricated Reynolds equation, and the dynamic motion equation has been solved by the direct integral method. The unbalanced responses of the rotor system supported by fixed-tilting-pad gas-lubricated journal bearings are analyzed by the orbit diagram, Poincaré map, time series, and spectrum diagram. The numerical results reveal periodic, period-3, and quasiperiodic motions of nonlinear behaviors of the system. Finally, the effects of pivot ratio and preload coefficient on the nonlinear dynamic characteristics of the fixed-tilting-pad self-acting gas-lubricated journal bearing-rotor system are investigated. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |