OVERVIEW Hard disk drives (HDDs) must endure tremendous shock environments that occur during transportation, installation, and operation of the drives. The dynamic environments are very brief, 1 millisecond or less, and can have a peak acceleration of 800 g or more. This loading causes the deformation of the suspension arm for the read head and hard contact between internal components. ATA has a long history of supporting the design of sensitive electronics through the use of advanced dynamic analysis and test. To understand the interaction between the components of the HDD under shock loading, ATA simulated the highly nonlinear, short- duration dynamic events and recovered displacements and component stresses. Through this approach, ATA gained critical insight into the response of

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