Effect of disk support system dynamics on the stability of head–disk interface during an operational shock in a mobile hard disk drive

There has been a substantial increase in the demand of hard disk drives (HDD) for mobile electronic devices like laptop, camcorders, etc. Mobile HDDs are often subjected to harsh working environments and hence require higher shock resistance for better reliability performance. In this paper, we develop a model for the mobile disk drive to numerically investigate the dynamics of the head–disk interface (HDI) during an operational shock. The results show that the disk and its support system design have a strong influence on the shock resistance. This study can help improve the HDD components and air bearing design for a better shock performance.

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