WJM  Vol.2 No.1 , February 2012
Numerical Investigation of Flow Structure Interaction Coupling Effects in Hard Disk Drives
ABSTRACT
This paper studies the flow structural interaction (FSI) within a hard disk drive (HDD) through the use of a novel coupling method. The interaction studied was the fluid induced vibration in the HDD. A two step coupling approach was used, where the fluid and structural components were solved sequentially. The result obtained was a ratio of 0.65 between the vibration amplitudes of a fixed head stack assembly (HSA) and a moving HSA. The ratio was next applied on a real 3.5 inch HDD, to allow the parameter to be further improved upon. A new benchmark index of 0.69 was developed from this. This parameter may allow future researchers to model the out of plane vibrations of a HSA easily, saving precious time. A 31% more accurate simulation of FSI within 3.5 inch HDD at 15000 rpm is achieved by the use of this new coupling method and benchmark index.

Cite this paper
nullE. Ng, Q. Teo and N. Liu, "Numerical Investigation of Flow Structure Interaction Coupling Effects in Hard Disk Drives," World Journal of Mechanics, Vol. 2 No. 1, 2012, pp. 9-18. doi: 10.4236/wjm.2012.21002.
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