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Finite element analysis of the shock response and head slap behavior of a hard disk drive

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1 Author(s)
Edwards, J.R. ; Western Digital Corp., San Jose, CA, USA

A study of the shock response of a hard disk drive dropped from a height onto a surface with a specific contact stiffness is presented. A finite element model of the hard disk drive was developed and transient response analysis of the model was performed to evaluate the shock problem. The study shows why a disk drive is particularly sensitive to shock inputs with narrow pulse widths in the order of 0.5 to 1 millisecond

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Magnetics, IEEE Transactions on  (Volume:35 ,  Issue: 2 )