本文選題：磁盤陣列　切入點(diǎn)：有限元方法　出處：《電子科技大學(xué)》2012年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著信息時(shí)代的來臨,各行各業(yè)的數(shù)據(jù)成爆發(fā)式增長,人們?nèi)粘Ｉ钪袩o不涉及大量數(shù)據(jù)的讀取與保存。作為數(shù)據(jù)存儲(chǔ)的最主要介質(zhì)——磁盤陣列,它本身的可靠性將直接影響數(shù)據(jù)的存儲(chǔ)安全。因此為了提高磁盤陣列的可靠性,對(duì)-其進(jìn)行結(jié)構(gòu)動(dòng)力學(xué)分析是有必要的。 本文以國內(nèi)某知名存儲(chǔ)設(shè)備供應(yīng)商的某款存儲(chǔ)產(chǎn)品為對(duì)象,利用有限元方法對(duì)其進(jìn)行結(jié)構(gòu)動(dòng)力學(xué)分析。并通過試驗(yàn)對(duì)有限元分析的結(jié)果進(jìn)行驗(yàn)證。 根據(jù)國軍標(biāo)GJB/Z126-99《振動(dòng)、沖擊環(huán)境測(cè)量數(shù)據(jù)歸納方法》對(duì)磁盤陣列內(nèi)部的振源(包括硬盤及風(fēng)扇)進(jìn)行隨機(jī)振動(dòng)歸納,所得PSD譜作為之后進(jìn)行隨機(jī)振動(dòng)分析的激勵(lì)譜。同時(shí)根據(jù)硬盤與風(fēng)扇的振動(dòng)特性以及硬盤本身的受振特性,提出了在選型時(shí)的原則。本文以硬盤為例介紹了隨機(jī)振動(dòng)數(shù)據(jù)歸納的一般方法。 對(duì)該磁盤陣列的硬盤框進(jìn)行有限元建模。本文詳細(xì)介紹了有限元建模過程中的關(guān)鍵步驟。并對(duì)部件的簡化進(jìn)行了規(guī)范,從固有頻率與振型出發(fā)明確了一定的簡化標(biāo)準(zhǔn),形成了一套科學(xué)的簡化方法。 對(duì)硬盤框進(jìn)行模態(tài)分析,得到相應(yīng)的固有頻率與振型,并結(jié)合工程上常用的結(jié)構(gòu)抗振優(yōu)化設(shè)計(jì)原則,從去諧、去耦、阻尼三個(gè)方面入手,提出了一些有建設(shè)性的修改意見。 對(duì)磁盤陣列進(jìn)行譜分析中的隨機(jī)振動(dòng)分析,由于計(jì)算機(jī)配置以及工作量的原因,本課題只研究了磁盤陣列在最小配置情況下的隨機(jī)振動(dòng)分析,最小配置即硬盤框內(nèi)包含兩塊硬盤、一個(gè)控制盒、一個(gè)電源模塊。由試驗(yàn)驗(yàn)證表明有限元分析結(jié)果與試驗(yàn)結(jié)果一致。通過研究有限元仿真結(jié)果可得到磁盤陣列中任何一點(diǎn)的響應(yīng)。 綜上所述,本文以有限元方法為主要手段,以ANSYS有限元仿真軟件為工具對(duì)磁盤陣列進(jìn)行了動(dòng)力學(xué)分析,分析結(jié)果對(duì)磁盤陣列的抗振優(yōu)化設(shè)計(jì)提供了一定的參考依據(jù),有助于公司降低研發(fā)成本,縮短設(shè)計(jì)周期。且相關(guān)的研究方法對(duì)其他類型的電子設(shè)備也適用。
[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.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TP333

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