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

Volume

37

Issue

2

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

799

Lastpage

804

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.917619

Filename

917619