한국윤활학회:학술대회논문집 (Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference)
- 한국윤활학회 2004년도 학술대회지
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- Pages.143-148
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- 2004
교란 유한요소법을 이용한 하드 디스크 슬라이더의 동특성 해석
Dynamic Characteristics of HDD Slider by Perturbed Finite Element Method
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Hwang Pyung
(School of Mechanical Engineering, Yeungnam University) ;
- Khan Polina V. (Mechanical Engineering Department, Yeungnam University)
- 발행 : 2004.11.01
초록
The numerical analysis of the hard disk drive slider is presented. The pressure distribution was calculated using the finite element method. The generalized Reynolds equation was applied in order to include the gas rarefaction effect. The balance of the air bearing force and preload force was considered. The characteristics of the small vibrations near the equilibrium were studied using the perturbation method. Triangular mesh with variable element size was employed to model the two-rail slider. The flying height, pitching angle, rolling angle, stiffness and damping of the two-rail slider were calculated for radial position changing from the inner radius to the outer radius and for a wide range of the slider crown values. It was found that the flying height, pitching angle and rolling angle were increased with radial position while the stiffness and damping coefficients were decreased. The higher values of crown resulted in increased flying height, pitching angle and damping and decreased stiffness.