Title :
Vibration analysis of fluid dynamic bearing spindles with rotating-shaft design
Author :
Jintanawan, Thitima ; Shen, I.Y. ; Tanaka, Katsuhiko
Author_Institution :
Dept. of Mech. Eng., Chulalongkorn Univ., Bangkok, Thailand
fDate :
3/1/2001 12:00:00 AM
Abstract :
This paper is to present theoretical and experimental vibration analysis of fluid dynamic bearing (FDB) spindles with rotating-shaft design. In the theoretical analysis, a mathematical model is developed to predict half-speed whirls, rocking modes, frequency response functions, and shock responses. In the experimental studies, FDB spindles carrying multiple disks are tested at various spin speed. Frequency response functions (FRF) are obtained to verify the mathematical model. The theoretical results agree reasonably well with experimental results in both natural frequencies and resonance amplitudes
Keywords :
disc drives; frequency response; hard discs; machine bearings; vibrations; fluid dynamic bearing spindle; frequency response function; half-speed whirl; hard disc drive; mathematical model; natural frequency; resonance amplitude; rocking mode; rotating shaft design; shock response; vibration analysis; Deformable models; Electric shock; Fluid dynamics; Frequency response; Mathematical model; Mechanical engineering; Shafts; Springs; Stators; Vibrations;
Journal_Title :
Magnetics, IEEE Transactions on
