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Titre du document / Document title

Topology designs of slider air bearings

Auteur(s) / Author(s)

YOON Sang-Joon (1) ; CHOI Dono-Hoon (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Center of Innovative Design Optimization Technology, Hanyang University, Seoul 133-791, COREE, REPUBLIQUE DE

Résumé / Abstract

A new approach for topology designs of slider air bearings in magnetic recording disk drives is suggested by using large-scale discrete variable optimization techniques. Conventional optimization techniques are restricted to the original topology of the slider by modifying the initial designs. To overcome the restriction, a new topology design approach is presented with enhanced mathematical techniques. Topology optimization of slider air bearings typically has a large number of design variables because the finite mesh must be fine enough to represent the shape of the air bearing surface (ABS). To handle a large number of design variables, an efficient strategy for the optimization including the sensitivity analysis must be established. As a gradient-based local optimization algorithm, the sequential unconstrained minimization technique (SUMT) using an exterior penalty function is used, which requires little computational effort and computer memory. For the gradient calculation, the analytical design sensitivity analysis method introducing an adjoint variable is employed. A topology design problem is formulated as a function of the residuals which is calculated by solving the generalized Reynolds equation. A very large number of discrete design variables (=9409) are dealt with, which denote the rail heights at grid cells. To validate the suggested design methodology a developed program is applied to two slider models with one and three trailing rails. The simulation results demonstrated the effectiveness of the proposed design methodology by showing that the optimized topologies have reasonable shapes without any initial designs.

Revue / Journal Title

Journal of tribology    ISSN  0742-4787   CODEN JOTRE9 

Source / Source

2004, vol. 126, no2, pp. 342-346 [5 page(s) (article)] (12 ref.)

Langue / Language

Anglais

Editeur / Publisher

American Society of Mechanical Engineers, New York, NY, ETATS-UNIS  (1984) (Revue)

Mots-clés anglais / English Keywords

Geometrical model

;

Modeling

;

Reynolds equation

;

Analytical method

;

Minimization

;

Optimization

;

Rail

;

Recording disk

;

Magnetic recording

;

Floppy disk

;

Magnetic disk

;

Magnetic bearing

;

Recording head

;

Gas bearing

;

Read head

;

Height

;

Memory effect

;

Drive mechanism

;

Mots-clés français / French Keywords

Modèle géométrique

;

Modélisation

;

Equation Reynolds

;

Méthode analytique

;

Minimisation

;

Optimisation

;

Rail

;

Disque enregistrement

;

Enregistrement magnétique

;

Disque magnétique souple

;

Disque magnétique

;

Palier magnétique

;

Tête enregistrement

;

Palier gaz

;

Tête lecture

;

Hauteur

;

Effet mémoire

;

Mécanisme entraînement

;

Mots-clés espagnols / Spanish Keywords

Modelo geométrico

;

Modelización

;

Ecuación Reynolds

;

Método analítico

;

Minimización

;

Optimización

;

Riel (vía férrea)

;

Disco grabación

;

Grabación magnética

;

Disco magnético flojo

;

Disco magnético

;

Cojinete magnético

;

Cabeza registro

;

Soporte gas

;

Cabeza lectura

;

Altura

;

Efecto memoria

;

Mecanismo accionamiento

;

Localisation / Location

INIST-CNRS, Cote INIST : 6120 F, 35400011168136.0170

Nº notice refdoc (ud4) : 15694714



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