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On Application of the Conjugate-Gradient Method to Static Analysis of HDD Slider
Polina Veniaminovna Khan,Pyung Hwang 한국트라이볼로지학회 2004 한국트라이볼로지학회 학술대회 Vol.38 No.-
The object of the present work is the numerical analysis of the computer hard disk slider. The pressure between slider and disk surfaces is calculated using the Boundary Fitted Coordinate System and Divergence Formulation for the nonlinear Reynolds' equation solution. The optimization scheme is applied to locate the steady state position of the slider. Negative pressure femto-slider with five pads is considered as an example. The steady state position of the slider is studied as a function of the disk radius. It is found that the line search accuracy has significant influence on effectiveness of the conjugate gradient method. The curve fitting method is applied in the line search to achieve high accuracy with reasonable number of objective function evaluation.