Numerical Investigation of Flow Structure Interaction Coupling Effects in Hard Disk Drives

• 作者: Eddie Yin-Kwee Ng Ning Yu Liu Qing Ren Teo
• 来源期刊: 力学国际期刊(英文)
• 学科: 医学
• 关键词: HARD DISK DRIVES COUPLING Method Modeling Simulation and Optimization FSI
• 年，卷（期）: 2012,（1）
• 页码范围: 9-18
• 页数: 10页
• 分类号: R73

摘要

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.