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As small form factor (one-inch and smaller) hard disk drives are widely used in portable consumer appliances and gadgets, their mechanical robustness is of greater concern. In this paper, the non-operational shock response for the one-inch drive is investigated. A finite element model of the hard disk drive was developed in the commercially available finite element package, ANSYS. The overall model...
Finite element model of the head disk assembly (HDA) of a small-form factor drive was created. Operational shock simulation and modal analysis were conducted with this model. The pulse width effect of a half-sine acceleration pulse on the shock responses was investigated. Three possible approaches were suggested for reducing the shock responses.
A thorough understanding of the dynamic behavior under shock is essential to the development of new generation disk drives. In this paper, the effects of the acceleration pulse shape under conditions of different pulse widths are studied for a given resonant frequency. To emphasize the fundamental aspects of the pulse shape effects, the dynamic system investigated was a single actuator arm without...
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