Experimental and numerical investigation of shock response in 3.5 and 2.5 in. form factor hard disk drives

Murthy, Aravind N.; Feliss, Bert; Gillis, D.; Talke, Frank E.

doi:10.1007/s00542-006-0232-x

Cited by 26 publications

(8 citation statements)

References 12 publications

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“…Comparison of the simulation results for the two models was used to develop a correlation between the linear and rotary shock tests. Murphy et al (2006) investigated the shock performance of two form factor HDDs, 3.5 and 2.5 in., respectively. The displacement of the actuator arm, the suspension, and the disk due to linear shock loads was studied experimentally for both nonoperating and operating states of the HDDs.…”

Section: Shock Robustness Of Hddsmentioning

confidence: 99%

Shock Simulation of Drop Test of Hard Disk Drives

Shu

Shi

Luo

2011

Structural Dynamics of Electronic and Photonic Systems

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Section: Shock Robustness Of Hddsmentioning

confidence: 99%

Shock Simulation of Drop Test of Hard Disk Drives

Shu

Shi

Luo

2011

Structural Dynamics of Electronic and Photonic Systems

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“…With the rapid growth of the application of small form factor hard disk drive (HDD) in consumer electronics products and portable devices, the shock resistance of HDD under operating conditions is one of the key design and optimization issues faced by the HDD industry (Murthy et al 2006). Numerical investigation of HDD shock resistance will provide guidance to the industry in terms of design verification and optimization.…”

Section: Introductionmentioning

confidence: 99%

Efficient simulation of hard disk drive operational shock response using model order reduction

Lin

Ong

2009

Microsyst Technol

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The complex structure, coupled mechanical and fluidic energy domains, and inherent nonlinearity of air bearing between slider and disk involved in the hard disk drive (HDD) are normally presented as a large scale problem which will result in very heavy computational costs in terms of intensive computation and time consuming for HDD research communities and industries to carry out the transient dynamic simulation for HDD design verification, performance analysis, and optimization by using the traditional full-order models, such as finite element model (FEM). This paper presents a method of application of model order reduction (MOR) technique to dramatically reduce the computation time for HDD transient shock performance analysis while capturing the behaviors of original problem faithfully. The reduced models are obtained by performing MOR directly to the FEMs through Krylov subspace and Arnoldi algorithm. The transient operational shock response results of the reduced models of a head suspension assembly (HSA) subjected to half-sine shock pulse demonstrate that the reduced models can dramatically reduce total computation by at least three orders and have very good agreement with those simulated from the original large problem by fullorder FEM.

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“…At present, the dynamic performance of the head/disk interface of hard disk drives subjected to an external shock have been studied from the perspective of simulation and experiments [5][6][7][8][9]. These studies showed that the stability of head/slider and the anti-shock performance of head/disk interface can be improved by using appropriate ramp load.…”

Section: Introductionmentioning

confidence: 99%

Simulation of the dynamic characteristics for a hard disk drive during load/unload process subject to an external shock

Wei

Jiang

2010

2010 3rd International Symposium on Systems and Control in Aeronautics and Astronautics

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The dynamics of the head/disk interface and the lift-tab ramp interface of hard disk drive subject to an external shock during load/unload process were modeled and simulated. The effects of the shock duration and amplitude of shock impulse on the dynamic and contact characteristics of related interfaces were analyzed. The results show that the effects of the shock on contact force and displacement response of dual sliders are different. The influence of the impact on the upper slider is greater than the lower one. These results are beneficial to the improvement of the head/disk interface and further application of the load/unload technology. Manuscript

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Experimental and numerical investigation of shock response in 3.5 and 2.5 in. form factor hard disk drives

Cited by 26 publications

References 12 publications

Shock Simulation of Drop Test of Hard Disk Drives

Shock Simulation of Drop Test of Hard Disk Drives

Efficient simulation of hard disk drive operational shock response using model order reduction

Simulation of the dynamic characteristics for a hard disk drive during load/unload process subject to an external shock

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