Application of Optimization Approach to Static FE Analysis of Hard Disk Drive Slider

The objective of the present work is to present the numerical analysis of the computer hard disk slider. The air film pressure is calculated using the finite element method. The conjugate-gradient method and the perturbation method are employed in the static analysis of the slider. The steady state attitude of the femto slider is studied for various radial positions and skew angles. It is found that the perturbation method is an efficient method for gradient evaluation. Also, it is shown that optimization of the Hessian matrix form accelerates the search process.

[1]  Dong-Hoon Choi,et al.  Adjoint Design Sensitivity Analysis of Molecular Gas Film Lubrication Sliders , 2003 .

[2]  K. Huebner.  The finite element method for engineers , 1975 .

[3]  Luis San Andrés,et al.  On the Numerical Modeling of High-Speed Hydrodynamic Gas Bearings , 1999 .

[4]  Shigehisa Fukui,et al.  A Database for Interpolation of Poiseuille Flow Rates for High Knudsen Number Lubrication Problems , 1990 .

[5]  M. S. Bazaraa,et al.  Nonlinear Programming , 1979 .

[6]  David B. Bogy,et al.  Flying Height Modulation Due to Disk Waviness of Sub-5 nm Flying Height Air Bearing Sliders , 2002 .

[7]  D. Choi,et al.  Static Analysis of Flying Characteristics of the Head Slider by Using an Optimization Technique , 1994 .

[8]  H. Ota,et al.  Stiffness and Damping of Compressible Lubricating Films Between Computer Flying Heads and Textured Media: Perturbation Analysis Using the Finite Element Method , 1991 .

[9]  David B. Bogy,et al.  Unstructured Adaptive Triangular Mesh Generation Techniques and Finite Volume Schemes for the Air Bearing Problem in Hard Disk Drives , 2000 .

[10]  Jih-Ping Peng,et al.  Characteristics of air bearing suction force in magnetic recording disks , 1996 .

[11]  David B. Bogy,et al.  Effect of the Intermolecular Forces on the Flying Attitude of Sub-5 NM Flying Height Air Bearing Sliders in Hard Disk Drives , 2002 .

[12]  J. W. White,et al.  Flying Characteristics of the Transverse and Negative Pressure Contour (“TNP”) Slider Air Bearing , 1997 .

[13]  David B. Bogy,et al.  Stiffness and Damping Evaluation of Air Bearing Sliders and New Designs With High Damping , 1999 .

[14]  Dong-Hoon Choi,et al.  Optimal Design of HDD Air-Lubricated Slider Bearings for Improving Dynamic Characteristics and Operating Performance , 2001 .

[15]  Dong-Hoon Choi,et al.  Topology Designs of Slider Air Bearings , 2004 .

[16]  E. Cuthill,et al.  Reducing the bandwidth of sparse symmetric matrices , 1969, ACM '69.

[17]  K. Ono.  Dynamic Characteristics of Air-Lubricated Slider Bearing for Noncontact Magnetic Recording , 1975 .