基于具有抗震功能的硬盘磁头气垫面的仿真分析

发布时间：2018-01-17 15:20

本文关键词：基于具有抗震功能的硬盘磁头气垫面的仿真分析　出处：《上海交通大学》2012年硕士论文　论文类型：学位论文

【摘要】：为了提高磁头的抗震性能，保证硬盘内部数据的安全。本文使用磁头气垫面设计软件兼气垫面动态特性仿真软件，该软件是美国加州大学伯克利分校CML（Computer Mechanics Laboratory）实验室开发的CMLAir，从增强磁头的刚度系数和提高其阻尼率入手来研究硬盘的抗震性能，降低硬盘受到外部撞击时磁头损毁的几率，延长硬盘的使用寿命。首先，本文选取一个已知抗震能力较差、刚度系数和阻尼率均较低的初始磁头气垫面作为研究对象，在该气垫面基础上，使用气垫面设计软件分析研究如何通过改变磁头气垫面形状而改变气流流向，优化磁头表面的压强分布,增强其机械强度和提高其阻尼率；其次，使用碰撞仿真器预测优化后的磁头气垫面的最大抗震能力，，将其与初始磁头气垫面的抗震能力作比较；然后，通过测试优化后的磁头气垫面实验工程样品的抗震能力验证硬盘的抗震性能是否得到有效的提高；最后，归纳总结通过改变气垫面形状提高磁头抗震性能的气垫面设计方法。
[Abstract]:In order to improve the seismic performance of the magnetic head and ensure the safety of the internal data of the hard disk, the design software of the magnetic head air cushion surface and the simulation software of the dynamic characteristics of the air cushion surface are used in this paper. The software was developed by the CML(Computer Mechanics LaboratoryLab at the University of California, Berkeley. The aseismic performance of the hard disk is studied by increasing the stiffness coefficient and damping rate of the hard disk, reducing the probability of the head damage when the hard disk is hit by the outside, and prolonging the service life of the hard disk. First of all, this paper selects an initial magnetic head air cushion with poor seismic capacity, low stiffness coefficient and low damping rate as the research object, on the basis of the air cushion surface. The air cushion surface design software is used to analyze and study how to change the flow direction of the magnetic head air cushion surface by changing the shape of the magnetic head air cushion surface, optimize the pressure distribution of the magnetic head surface, enhance its mechanical strength and increase its damping rate. Secondly, the impact simulator is used to predict the maximum seismic capacity of the optimized magnetic head air cushion surface, and the seismic capacity of the initial magnetic head air cushion surface is compared with that of the original magnetic head air cushion surface. Then, the seismic performance of the hard disk is proved to be improved effectively by testing the seismic capability of the optimized magnetic head air cushion surface. Finally, the design method of air cushion surface is summarized to improve the seismic performance of magnetic head by changing the shape of air cushion surface.
【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP333.35

【参考文献】