Dynamics Investigation on Axial-Groove Gas Bearing-Rotor System with Rod-Fastened Structure

被引：0
|
作者：
Li, Sha [1 ,2 ]
Lu, Yanjun [1 ,2 ]
Zhang, Yongfang [3 ]
Hei, Di [1 ,2 ,4 ]
Zhao, Xiaowei [1 ,2 ]
机构：
[1] Xian Univ Technol, Sch Mech & Precis Instrument Engn, Xian 710048, Peoples R China
[2] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China
[3] Xian Univ Technol, Fac Printing Packaging Engn & Digital Media Techn, Xian 710054, Peoples R China
[4] Shaanxi Railway Inst, Sch Railway Power, Weinan 714000, Peoples R China
来源：
APPLIED SCIENCES-BASEL | 2022年 / 12卷 / 01期
基金：
中国国家自然科学基金;
关键词：
rod-fastened rotor; axial-groove gas bearing; Newmark-beta method; differential transformation method; disturbance compensation; NONLINEAR-ANALYSIS;
D O I：
10.3390/app12010250
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
This research report discusses the dynamic behaviors of an axial-groove gas bearings-rotor system with rod-fastened structure. The time-based dependency-compressible Reynolds equation in the gas bearing nonlinear system is solved by the differential transformation method, and the continuous gas film forces of a three-axial-groove gas bearing are obtained. A dynamic mathematical model of the rotor system with rod-fastened structure supported in two- and three-axial-groove gas bearings with eight degrees of freedom is established. The dynamic motion equation of the rod-fastened rotor system is solved by the modified Newmark-beta method based on disturbance compensation, which can reduce the computing error and improve computing stability. The dynamic characteristics of the rod-fastened rotor-gas bearing system are analyzed efficiently by the diversiform unbalance responses. The influence of the position angle of the pad on the nonlinear characteristics of the rod-fastened rotor system is also studied.
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页数：20
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