Mechanical Sciences
Mechanical Sciences
Mechanical Sciences
Articles | Volume 16, issue 2
Articles | Volume 16, issue 2
https://doi.org/10.5194/ms-16-375-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ms-16-375-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 2
Research article
 | 
21 Jul 2025
Research article |  | 21 Jul 2025

Vibration responses of a two-span three-support rotor system with sliding bearing elevation change

Ziyang Zhou, Guangfu Bin, Chao Li, Yaozhi Gao, and Maharaja Bayjid Md

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Cited articles

Al-Hussain, K. M. and Redmond, I.: Dynamic response of two rotors connected by rigid mechanical coupling with parallel misalignment, J. Sound Vib., 249, 483–498, https://doi.org/10.1006/jsvi.2001.3866, 2002. 
Avendano, R. D. and Childs, D. W.: One Explanation for Two-Times Running Speed Response Due to Misalignment in Rotors Connected by Flexible Couplings, J. Eng. Gas. Turb. Power, 135, 062501, https://doi.org/10.1115/1.4023232, 2013. 
Bin, G., Li, X., Shen, Y., and Wang, W.: Development of whole-machine high speed balance approach for turbomachinery shaft system with N+1 supports, Measurement, 122, 368–379, https://doi.org/10.1016/j.measurement.2018.02.035, 2018. 
Bin, G., Li, C., Li, J., and Chen, A.: Erosion-damage-induced vibration response of aero-gas generator rotor system, Mech. Syst. Signal Pr., 195, 110298, https://doi.org/10.1016/j.ymssp.2023.110298, 2023. 
Bin, G.-F., Huang, Y., Guo, S.-P., Li, X.-J., and Wang, G.: Investigation of Induced Unbalance Magnitude on Dynamic Characteristics of High-speed Turbocharger with Floating Ring Bearings, Chin. J. Mech. Eng., 31, 88, https://doi.org/10.1186/s10033-018-0287-5, 2018. 
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Short summary
The two-span three-support rotor is a typical structure of rotating machinery such as steam turbine units, compressor units, and water pumps. When the elevation of the sliding bearing changes, the misalignment excitation of the coupling and the stiffness damping of the bearing will change accordingly, which will affect the vibration characteristics of the rotor. This paper can provide theoretical guidance and data support for the structural design and fault diagnosis of the two-span three-support rotor.
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