磁盘阵列的动力学分析及研究

发布时间：2018-03-13 10:47

本文选题：磁盘阵列　切入点：有限元方法　出处：《电子科技大学》2012年硕士论文　论文类型：学位论文

【摘要】：随着信息时代的来临,各行各业的数据成爆发式增长,人们日常生活中无不涉及大量数据的读取与保存。作为数据存储的最主要介质——磁盘阵列,它本身的可靠性将直接影响数据的存储安全。因此为了提高磁盘阵列的可靠性,对-其进行结构动力学分析是有必要的。本文以国内某知名存储设备供应商的某款存储产品为对象,利用有限元方法对其进行结构动力学分析。并通过试验对有限元分析的结果进行验证。根据国军标GJB/Z126-99《振动、冲击环境测量数据归纳方法》对磁盘阵列内部的振源(包括硬盘及风扇)进行随机振动归纳,所得PSD谱作为之后进行随机振动分析的激励谱。同时根据硬盘与风扇的振动特性以及硬盘本身的受振特性,提出了在选型时的原则。本文以硬盘为例介绍了随机振动数据归纳的一般方法。对该磁盘阵列的硬盘框进行有限元建模。本文详细介绍了有限元建模过程中的关键步骤。并对部件的简化进行了规范,从固有频率与振型出发明确了一定的简化标准,形成了一套科学的简化方法。对硬盘框进行模态分析,得到相应的固有频率与振型,并结合工程上常用的结构抗振优化设计原则,从去谐、去耦、阻尼三个方面入手,提出了一些有建设性的修改意见。对磁盘阵列进行谱分析中的随机振动分析,由于计算机配置以及工作量的原因,本课题只研究了磁盘阵列在最小配置情况下的随机振动分析,最小配置即硬盘框内包含两块硬盘、一个控制盒、一个电源模块。由试验验证表明有限元分析结果与试验结果一致。通过研究有限元仿真结果可得到磁盘阵列中任何一点的响应。综上所述,本文以有限元方法为主要手段,以ANSYS有限元仿真软件为工具对磁盘阵列进行了动力学分析,分析结果对磁盘阵列的抗振优化设计提供了一定的参考依据,有助于公司降低研发成本,缩短设计周期。且相关的研究方法对其他类型的电子设备也适用。
[Abstract]:With the advent of the information age, the data of all kinds of industries are explosively growing, and people's daily life involves the reading and saving of a large amount of data. As the most important medium for data storage, the disk array, In order to improve the reliability of the disk array, it is necessary to analyze the structure dynamics of the disk array. In this paper, the finite element method is used to analyze the structural dynamics of a storage product from a well-known storage equipment supplier in China, and the results of the finite element analysis are verified by experiments. According to the "Vibration, impact Environment Measurement data Induction method", the vibration sources (including hard disk and fan) inside the disk array were induced by random vibration according to the National military Standard (GJB/Z126-99). The obtained PSD spectrum is used as the excitation spectrum for random vibration analysis. At the same time, according to the vibration characteristics of the hard disk and fan and the vibration characteristics of the hard disk itself, This paper introduces the general method of random vibration data induction taking hard disk as an example. Finite element modeling of the hard disk frame of the disk array is carried out. The key steps in the process of finite element modeling are introduced in detail in this paper. The simplification of the components is standardized, and the simplified standard is defined from the natural frequency and vibration mode. A scientific simplification method has been developed. The modal analysis of the hard disk frame is carried out, the corresponding natural frequency and mode shape are obtained, and some constructive modification suggestions are put forward from the aspects of detuning, decoupling and damping in combination with the structural anti-vibration optimization design principles commonly used in engineering. Random vibration analysis of disk array is carried out in spectrum analysis. Due to the reason of computer configuration and workload, this paper only studies random vibration analysis of disk array in the case of minimum configuration. The minimum configuration is that the hard disk box contains two hard disks, a control box, A power supply module. The experimental results show that the finite element analysis results are consistent with the experimental results. The response of any point in the disk array can be obtained by studying the finite element simulation results. To sum up, the dynamic analysis of the disk array is carried out by using the finite element method and the ANSYS finite element simulation software. The results provide a certain reference for the optimum design of the disk array anti-vibration. Helps companies reduce R & D costs and design cycles. And relevant research methods are applicable to other types of electronic devices.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP333

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