Reduction of flow induced vibration of head-arm and disk in high rotational HDD

减少高旋转 HDD 中磁头臂和磁盘的流动引起的振动

• 批准号: 16560233
• 负责人: IMAI Satomitsu
• 金额: $ 2.18万
• 依托单位: Nihon University (2005)Tokyo Metropolitan College of Aeronautical Engineering (2004)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16560233/
• 关键词: Hard Disk Drive; Flow induced vibration; Rotaional flow; Turbulent flow; Positioning; Disk vibration; 流れ場測定; ヘッド位置決め

The flow induced vibration of the head-arm of HDD (Hard Disk Drive) has increased due to the increase of the disk rotational speed. The head vibration leads to the head positioning error. This research deals with making the excitation mechanism of the flow induced vibration clear and examining the reduction method of the vibration. Since the frequency characteristics of the head vibration do not have specific frequency peaks in the vibration amplitude, the excitation is not caused by Karman vortex. The excitation force is considered to be generated from the alteration of the velocity and the direction of the turbulent flow. The decrease of the flow alteration is important. As a reduction method, installing a spoiler on the upper side of the head and optimizing the value in the length and the thickness of the head-arm are effective.

由于磁盘旋转速度的增加，流动引起的HDD头部（硬盘驱动器）的振动增加了。头部振动导致头部定位误差。这项研究涉及使流动引起的振动的激发机理清晰，并检查了振动的还原方法。由于头部振动的频率特性在振动幅度中没有特定的频率峰，因此激发不是由Karman涡流引起的。激发力被认为是从速度的改变和湍流方向产生的。流动变化的减少很重要。作为减少方法，在头部上侧安装扰流板，并在头部的长度和厚度中优化值有效。

项目成果

磁気ディスク装置における浮上スライダとディスクの接触力の特性に関する検討

磁盘驱动器浮动滑块与盘片接触力特性研究

• 发表时间: 2006
• 期刊: 日本機械学会論文集・C編 72巻.717号(掲載決定)
• 作者: 山田 弘;他6名;今井 郷充
• 通讯作者: 今井 郷充

「研究成果報告書概要(欧文)」より

摘自《研究结果报告摘要（欧洲）》

• 发表时间: 2006
• 期刊: Seibutsu Butsuri 46(1)
• 作者: Yasushi Shigeri;Keiko Shimamoto
• 通讯作者: Keiko Shimamoto