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http://dx.doi.org/10.5050/KSNVN.2003.13.10.805

Analysis of Dynamic Characteristics of a HDD Spindle System Supported by Ball Bearing Due to Temperature Variation  

김동균 (한양대학교 기계공학부 초정밀회전기기연구실)
장건희 (한양대학교 기계공학부 초정밀회전기기연구실)
한재혁 (한양대학교 기계공학부 초정밀회전기기연구실)
김철순 (삼성종합기술원)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.13, no.10, 2003 , pp. 805-812 More about this Journal
Abstract
This paper presents a method to investigate the characteristics of a ball bearing and the dynamics of a HDD spindle system due to temperature variation. Finite element model is developed for the rotating and stationary parts of a HDD spindle system separately to determine their thermal deformations by using ANSYS, a finite element program. Then, the relative position of the rotating part with respect to the stationary part is determined by solving the equilibrium equation of the contact force between upper and lower ball bearings. The validity of the proposed method is verified by comparing the theoretical natural frequencies of a HDD spindle system with the experimental ones before and after temperature variation. It shows that the elevated temperature results in the increase of contact angle and the decrease of bearing deformation, contact force and bearing stiffness, which result in the decrease of the natural frequencies of a HDD spindle system.
Keywords
Temperature; Ball Bearing; HDD; Spindle Motor;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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