發(fā)布時間：2018-09-07 13:11

【摘要】：分離脫落電連接器廣泛應(yīng)用于導(dǎo)彈、火箭等需要分離的場合,它的分離可靠性對整個系統(tǒng)的正常運(yùn)行至關(guān)重要,然而,目前國內(nèi)外還未系統(tǒng)地對其進(jìn)行研究,對影響其分離脫落失敗的原因缺乏清晰認(rèn)識,沒有形成系統(tǒng)的可靠性評估方法。鑒于此,本文以YF6-57型分離脫落電連接器(以下簡稱YF6-57電連接器)為研究對象,系統(tǒng)分析電連接器分離失效模式、失效機(jī)理,研究電連接器分離可靠性評估方法,為提高電連接器的分離可靠性提供理論基礎(chǔ)。 本文的研究內(nèi)容如下： 第一章闡述了論文研究背景、目的和意義,介紹了可靠性工程發(fā)展歷史與研究現(xiàn)狀、產(chǎn)品失效分析技術(shù)與方法發(fā)現(xiàn)現(xiàn)狀、電連接器可靠性研究的現(xiàn)狀和存在的問題,最后提出了本文的研究目標(biāo)和研究內(nèi)容。 第二章分析了電連接器結(jié)構(gòu)、功能、材料；分析分離鎖緊機(jī)構(gòu)及其工作原理,并進(jìn)行了受力分析,基于受力得出電連接器的失效模式、失效機(jī)理。 第三章介紹了電連接器接觸對結(jié)構(gòu)及加工工藝；對不規(guī)則插孔簧片結(jié)構(gòu)進(jìn)行半剛性梁連接的等效、簡化處理；對簡化梁進(jìn)行基于Timoshenko深梁理論的簧片受力分析,求解簧片撓曲線；最后建立接觸對插拔力與簧片彎曲關(guān)系模型,獲得了插拔力精確計算公式。 第四章結(jié)合第三章節(jié)插拔力計算式,研究插針、插孔尺寸誤差對接觸對插拔力的影響；通過統(tǒng)計的方法,得出各個尺寸的概率分布,進(jìn)而建立了考慮尺寸誤差下的插拔力概率分布,并通過蒙特卡洛方法模擬插拔力,擬合得到插拔力概率分布參數(shù)；進(jìn)行試驗測試插拔力數(shù)據(jù),對插拔力模擬概率分布進(jìn)行檢驗；最終獲得了接觸對插拔力的概率分布。 第五章通過分析分離電連接器接觸對的裝配關(guān)系,研究了接觸對對中性；通過研究接觸對、絕緣片之間配合關(guān)系,完成了接觸對之間干涉分析；最終建立了電連接器分離阻力計算式； 第六章分析了影響彈簧彈力的因素；通過試驗,給出彈簧剛度、彈簧壓縮量的概率分布模型；建立了彈簧彈射力概率分布數(shù)學(xué)表達(dá)式；最終建立分離可靠性計算模型,計算并評價分離可靠度； 第七章最后對全文的研究進(jìn)行總結(jié),并提出對分離電連接器可靠性研究未來的展望。
[Abstract]:Separation and shedding electrical connectors are widely used in missile, rocket and other occasions. Its separation reliability is very important to the normal operation of the whole system. However, there is no systematic research on it at home and abroad. There is a lack of clear understanding of the causes affecting the failure of separation and shedding, and a systematic reliability evaluation method is not formed. In view of this, this paper takes YF6-57 type separating and shedding electrical connector (hereinafter referred to as YF6-57 electric connector) as the research object, systematically analyzes the separation failure mode and failure mechanism of the electrical connector, and studies the method of evaluating the separation reliability of the electrical connector. It provides a theoretical basis for improving the separation reliability of electrical connectors. The research contents of this paper are as follows: the first chapter describes the background, purpose and significance of the thesis, introduces the history and research status of reliability engineering, the current situation of product failure analysis technology and method discovery. The present situation and existing problems of reliability research of electrical connectors are discussed. Finally, the research objectives and contents of this paper are put forward. In the second chapter, the structure, function and material of the electrical connector are analyzed, and the separation locking mechanism and its working principle are analyzed. The failure mode and failure mechanism of the electrical connector are obtained based on the force. The third chapter introduces the contact pair structure and processing technology of electric connector, the equivalent and simplified treatment of semi-rigid beam connection for irregular socket Reed structure, the analysis of spring force based on Timoshenko deep beam theory, and the solution of spring deflection curve. Finally, a model of the relation between the contact force and the bending of the Reed is established, and the accurate formula for calculating the force is obtained. The fourth chapter combined with the third chapter of the formula to calculate the insertion force, the pin, the hole size error on the impact of the contact force, through the statistical method, get the probability distribution of each dimension, Then, the probability distribution of insert force considering dimension error is established, and the probability distribution parameter of insertion force is obtained by Monte Carlo method, the data of inserting force is tested and the probability distribution of interpolation force is tested. Finally, the probability distribution of contact to insert force is obtained. The fifth chapter studies the neutral contact pair by analyzing the assembly relation of the contact pair of the separated electrical connector, and completes the interference analysis of the contact pair by studying the coordination relationship between the contact pair and the insulator. In chapter 6, the factors influencing spring elasticity are analyzed, and the probability distribution model of spring stiffness and spring compression is given through experiments. The mathematical expression of the probability distribution of spring ejection force is established. Finally, the calculation model of separation reliability is established, and the separation reliability is calculated and evaluated. The prospect of the reliability research of separated electrical connectors is put forward.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TB114.3;TM503.5

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本文編號：2228357