本文選題：接觸件 + 收口量��； 參考：《哈爾濱工業(yè)大學》2017年碩士論文

【摘要】：接觸件作為電連接器的核心部件,接觸磨損是導(dǎo)致接觸件接觸失效的主要原因,而插針與插孔之間的插拔常會導(dǎo)致磨損的發(fā)生。本文以航天電連接器中常用的直開槽片簧式接觸件為研究對象,通過搭建接觸件插拔實驗系統(tǒng),研究接觸件收口量、插拔速度和水平偏移量對接觸件插拔特性的影響規(guī)律。首先,基于非線性有限元仿真軟件Abaqus,采用聯(lián)合仿真的方法建立具有不同收口量的接觸件有限元模型。在不同的收口量和水平偏移量的條件下,對接觸件插拔特性進行仿真分析,得到了接觸件的接觸面積和接觸壓力的變化特性以及接觸壓力和等效應(yīng)力的分布特性。其次,搭建電連接器接觸件插拔實驗系統(tǒng),主要包括插拔力測量裝置和接觸電阻采集裝置,可以對插拔速度和水平偏移量實現(xiàn)調(diào)節(jié)。選擇三類收口的接觸件進行插拔實驗,得到了接觸件的插拔力和接觸電阻隨插拔次數(shù)的變化規(guī)律。從微觀角度分析表面粗糙度的變化是導(dǎo)致插拔力增大的主要原因,并且表面主要的磨損特征為犁溝和顆粒物。從理論角度分析了接觸壓力對接觸件磨損率的影響。然后,基于實驗研究了不同的插拔速度對接觸件插拔特性影響,分析了插拔力和接觸電阻隨插拔次數(shù)的變化規(guī)律。結(jié)合磨損區(qū)域表面形貌和元素分析,歸納總結(jié)了接觸件插拔時,接觸表面存在的三種典型磨損形式為擦傷、顆粒物和堆積。根據(jù)接觸件材料磨損率的變化,通過建立切線沖擊碰撞磨損模型,得到了插拔過程中接觸界面的材料的磨損特征。最后,根據(jù)接觸件水平偏移特征,將水平偏移量劃分為不同種�；趯嶒炑芯苛私佑|件在不同的水平偏移量下對插拔特性的影響,分析了接觸件插拔力和接觸電阻隨插拔次數(shù)的變化規(guī)律以及水平偏移量對接觸件磨損率和插孔收口量的影響。并從微觀角度總結(jié)了插針三種典型的磨損形式為犁溝、顆粒物和流動層疊。本研究方法和結(jié)論可為航天電連接器插拔工況下的電接觸性能和機械性能的退化失效分析提供依據(jù),從而提高電氣和電子系統(tǒng)的可靠性。
[Abstract]:Contact wear is the main cause of contact failure as the core component of electrical connector, and the insertion and drawing between pin and socket often lead to wear. In this paper, the direct-slotted spring contacts commonly used in aerospace electrical connectors are taken as the research object. By setting up the contact plugging experiment system, the effects of the contact closing amount, the insertion speed and the horizontal offset on the insert characteristics of the contact are studied. Firstly, based on the nonlinear finite element simulation software Abaqus, the contact finite element model with different volume is established by the method of joint simulation. Under the condition of different inlet volume and horizontal offset, the contact area and contact pressure and the distribution of contact pressure and equivalent stress are obtained by simulation and analysis. Secondly, the electrical connector contact plug experiment system is built, which mainly includes the device for measuring the force of insertion and the device for collecting contact resistance, which can adjust the insertion speed and horizontal offset. The insertion force and contact resistance of three types of contacts are obtained by the experiment of inserting. The change of the contact force and contact resistance with the number of inserts is obtained. The change of surface roughness is the main reason for the increase of the pull-out force, and the main wear characteristics of the surface are ploughing and particulate matter. The influence of contact pressure on the wear rate of contact is analyzed theoretically. Then, based on the experiments, the effects of different plugging speeds on the plugging characteristics of the contact are studied, and the variation of the insertion force and the contact resistance with the number of insertions is analyzed. Based on the surface morphology and elemental analysis of the wear area, three typical wear forms of contact surface were summarized, such as abrasion, particulate matter and accumulation. According to the wear rate of the contact material, the wear characteristics of the contact interface during the process of insertion are obtained by establishing the tangent impact wear model. Finally, the horizontal offset is divided into different kinds according to the feature of horizontal migration. Based on the experiments, the influence of the contact on the plugging characteristics under different horizontal deviations is studied. The variation of the contact insertion force and contact resistance with the number of inserts and the influence of the horizontal offset on the contact wear rate and the socket size are analyzed. The three typical wear patterns of the pin are plow, particle and flow stratification from the microscopic point of view. The methods and conclusions of this study can provide a basis for the degenerative failure analysis of electrical contact and mechanical properties of aerospace electrical connectors under the condition of plugging, thus improving the reliability of electrical and electronic systems.
【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM503.5

【參考文獻】

相關(guān)期刊論文 前10條

1 陳俊寰;夏延秋;曹正鋒;;銅基銀鍍層的導(dǎo)電性及摩擦磨損性能[J];材料保護;2016年10期

2 凌三強;徐樂;付饒;翟國富;;基于穩(wěn)健性設(shè)計原理的接觸件插拔力質(zhì)量一致性優(yōu)化方法[J];機械工程學報;2017年04期

3 駱燕燕;劉旭陽;郝杰;王振;劉磊;林小明;;航空電連接器熱疲勞失效機理研究[J];兵工學報;2016年07期

4 楊奮為;房大慧;;彈性接觸件選用和可靠性研究[J];機電元件;2015年06期

5 謝鑫林;張雷;肖金坤;錢志源;張濤;周科朝;;AuAgCu電刷與Au鍍層的滑動電接觸性能（英文）[J];Transactions of Nonferrous Metals Society of China;2015年09期

6 Hemant PAL;Vimal SHARMA;;碳納米管增強銀復(fù)合材料的導(dǎo)熱性(英文)[J];Transactions of Nonferrous Metals Society of China;2015年01期

7 趙春穎;溫曉蘭;李一;;電連接器的機械壽命淺析[J];機電元件;2014年04期

8 任萬濱;王鵬;馬曉明;薛升俊;崔黎;翟國富;;電連接器鍍金銅觸點材料微動磨損特性的實驗研究[J];電工技術(shù)學報;2013年12期

9 湛利華;王萌;黃明輝;;基于蠕變公式的時效應(yīng)力松弛行為預(yù)測模型[J];機械工程學報;2013年10期

10 王松;付作鑫;王塞北;沈月;謝明;張吉明;;銀基電接觸材料的研究現(xiàn)狀及發(fā)展趨勢[J];貴金屬;2013年01期

相關(guān)博士學位論文 前1條

1 李庶;銀基復(fù)合電接觸材料滑動電摩擦磨損性能研究[D];合肥工業(yè)大學;2009年

相關(guān)碩士學位論文 前7條

1 李哲;分離脫落電連接器穩(wěn)健設(shè)計技術(shù)的研究[D];哈爾濱工業(yè)大學;2015年

2 嚴升;電連接器接觸特性與溫度場的數(shù)值模擬研究[D];北京交通大學;2014年

3 賈博賢;分離脫落電連接器分離可靠性評估的研究[D];浙江大學;2014年

4 楊智杰;基于有限元仿真的連接器插拔力及載流特性分析[D];北京郵電大學;2014年

5 王鵬;銅鍍金觸點材料微動磨損實驗及其失效物理分析[D];哈爾濱工業(yè)大學;2013年

6 靳方建;電連接器接觸件可靠性分析與高溫插拔試驗[D];浙江理工大學;2013年

7 馬松君;電連接器觸點材料高頻微動磨損特性與失效機理的研究[D];哈爾濱工業(yè)大學;2012年

，

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