TY - GEN
T1 - Development of herringbone-grooved aerodynamic journal bearing systems for ultra-high-speed rotations
AU - Miyanaga, Norifumi
AU - Tomioka, Jun
N1 - Publisher Copyright:
© (2015) Trans Tech Publications, Switzerland.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2015
Y1 - 2015
N2 - It is absolutely important for ultra-compact rotational machineries to achieve sable shaft rotation at ultra-high-speed. This paper discussed herringbone-grooved aerodynamic journal bearing systems developed for the purpose. In this system, the bearings are supported by rubber-O-rings for accurate and stable operations. To grasp the possibility for stabilization, two types of O-rings with different stiffness and damping properties under bearing supporting were tested in the experiment. As the results, the bearing system demonstrated the maximum rotational speed over 460,000 rpm without unstable phenomenon called whirl. However, the difference in rubber O-rings definitely affected the stability of the bearing system.
AB - It is absolutely important for ultra-compact rotational machineries to achieve sable shaft rotation at ultra-high-speed. This paper discussed herringbone-grooved aerodynamic journal bearing systems developed for the purpose. In this system, the bearings are supported by rubber-O-rings for accurate and stable operations. To grasp the possibility for stabilization, two types of O-rings with different stiffness and damping properties under bearing supporting were tested in the experiment. As the results, the bearing system demonstrated the maximum rotational speed over 460,000 rpm without unstable phenomenon called whirl. However, the difference in rubber O-rings definitely affected the stability of the bearing system.
KW - Aerodynamic bearings
KW - Herringbone-grooved bearings
KW - Precision rotations
KW - Ultra-high-speed rotations
KW - Viscoelastic supports
UR - http://www.scopus.com/inward/record.url?scp=84952334396&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84952334396&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.656-657.652
DO - 10.4028/www.scientific.net/KEM.656-657.652
M3 - Conference contribution
AN - SCOPUS:84952334396
SN - 9783038354956
T3 - Key Engineering Materials
SP - 652
EP - 657
BT - Recent Development in Machining, Materials and Mechanical Technologies
A2 - Chen, Jyh-Chen
A2 - Hiroshi, Usuki
A2 - Lee, Sheng-Wei
A2 - Fuh, Yiin-Kuen
PB - Trans Tech Publications Ltd
T2 - International Conference on Machining, Materials and Mechanical Technologies, IC3MT 2014
Y2 - 31 August 2014 through 5 September 2014
ER -