Articles | Volume 17, issue 2
https://doi.org/10.5194/ms-17-857-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ms-17-857-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Shaft-flexibility-induced hydrodynamic support redistribution and modal response in a multi-support bearing-rotor system
Yulin Zhang
School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou 545006, Guangxi, China
Engineering Research Center of Advanced Engineering Equipment Intelligent Manufacturing, Liuzhou 545006, Guangxi, China
Engineering Research Center of Advanced Engineering Equipment, University of Guangxi, Liuzhou 545006, Guangxi, China
Bing Li
CORRESPONDING AUTHOR
School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou 545006, Guangxi, China
Engineering Research Center of Advanced Engineering Equipment Intelligent Manufacturing, Liuzhou 545006, Guangxi, China
Engineering Research Center of Advanced Engineering Equipment, University of Guangxi, Liuzhou 545006, Guangxi, China
Wubin Xu
Engineering Research Center of Advanced Engineering Equipment Intelligent Manufacturing, Liuzhou 545006, Guangxi, China
Engineering Research Center of Advanced Engineering Equipment, University of Guangxi, Liuzhou 545006, Guangxi, China
Hanyu Guo
School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou 545006, Guangxi, China
Engineering Research Center of Advanced Engineering Equipment Intelligent Manufacturing, Liuzhou 545006, Guangxi, China
Engineering Research Center of Advanced Engineering Equipment, University of Guangxi, Liuzhou 545006, Guangxi, China
Yanpeng Yuan
School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou 545006, Guangxi, China
Engineering Research Center of Advanced Engineering Equipment Intelligent Manufacturing, Liuzhou 545006, Guangxi, China
Engineering Research Center of Advanced Engineering Equipment, University of Guangxi, Liuzhou 545006, Guangxi, China
Short summary
Flexible shafts supported by several oil-lubricated bearings can bend under local loads, changing how the bearings carry the rotor. This study shows that end loading strongly alters the oil-film support near the loaded end and redistributes support along the shaft. These local changes reshape the first bending mode more clearly than they shift the main low-order critical speed.
Flexible shafts supported by several oil-lubricated bearings can bend under local loads,...