TY - GEN
T1 - Investigations of cylindrical and conical whirl instabilities on hydrodynamic journal bearings
AU - Miyanaga, Norifumi
AU - Tomioka, Jun
N1 - Publisher Copyright:
© (2015) Trans Tech Publications, Switzerland.
PY - 2015
Y1 - 2015
N2 - Hydrodynamic journal bearings induced serious shaft vibrations called oil whirl. Since they often give severe damages to the mechanical systems, it is important to fully understand the phenomenon to avoid the occurrence by the proper bearing design. This study theoretically and experimentally investigated both cylindrical and conical whirl instabilities, which can be appeared in journal bearings, and their relation was discussed. As the result, the span length of the bearings had a significant effect on the vibration mode. The transitional state in which the cylindrical and conical whirl instabilities alternately appeared was observed.
AB - Hydrodynamic journal bearings induced serious shaft vibrations called oil whirl. Since they often give severe damages to the mechanical systems, it is important to fully understand the phenomenon to avoid the occurrence by the proper bearing design. This study theoretically and experimentally investigated both cylindrical and conical whirl instabilities, which can be appeared in journal bearings, and their relation was discussed. As the result, the span length of the bearings had a significant effect on the vibration mode. The transitional state in which the cylindrical and conical whirl instabilities alternately appeared was observed.
KW - Conical whirl instability
KW - Cylindrical whirl instability
KW - Hydrodynamic bearings
KW - Journal bearing
UR - http://www.scopus.com/inward/record.url?scp=84952362248&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84952362248&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.656-657.688
DO - 10.4028/www.scientific.net/KEM.656-657.688
M3 - Conference contribution
AN - SCOPUS:84952362248
SN - 9783038354956
T3 - Key Engineering Materials
SP - 688
EP - 693
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 -