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Article

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

by 1,2, 1,2,*, 3, 1,2,4 and 1,2
1
School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710048, China
2
State Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong University, Xi’an 710049, China
3
Faculty of Printing, Packaging Engineering and Digital Media Technology, Xi’an University of Technology, Xi’an 710054, China
4
School of Railway Power, Shaanxi Railway Institute, Weinan 714000, China
*
Author to whom correspondence should be addressed.
Academic Editors: Ji Wang, Weiqiu Chen and Bin Huang
Appl. Sci. 2022, 12(1), 250; https://doi.org/10.3390/app12010250
Received: 30 November 2021 / Revised: 20 December 2021 / Accepted: 21 December 2021 / Published: 28 December 2021
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-β 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. View Full-Text
Keywords: rod-fastened rotor; axial-groove gas bearing; Newmark-β method; differential transformation method; disturbance compensation rod-fastened rotor; axial-groove gas bearing; Newmark-β method; differential transformation method; disturbance compensation
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MDPI and ACS Style

Li, S.; Lu, Y.; Zhang, Y.; Hei, D.; Zhao, X. Dynamics Investigation on Axial-Groove Gas Bearing-Rotor System with Rod-Fastened Structure. Appl. Sci. 2022, 12, 250. https://doi.org/10.3390/app12010250

AMA Style

Li S, Lu Y, Zhang Y, Hei D, Zhao X. Dynamics Investigation on Axial-Groove Gas Bearing-Rotor System with Rod-Fastened Structure. Applied Sciences. 2022; 12(1):250. https://doi.org/10.3390/app12010250

Chicago/Turabian Style

Li, Sha, Yanjun Lu, Yongfang Zhang, Di Hei, and Xiaowei Zhao. 2022. "Dynamics Investigation on Axial-Groove Gas Bearing-Rotor System with Rod-Fastened Structure" Applied Sciences 12, no. 1: 250. https://doi.org/10.3390/app12010250

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