本文選題：礦用自卸車 + 后橋殼��； 參考：《西安工業(yè)大學(xué)》2014年碩士論文

【摘要】：隨著近年來(lái)經(jīng)濟(jì)的快速發(fā)展,人們對(duì)資源的需求亦與日俱增。作為大型露天礦石場(chǎng)所運(yùn)輸工具的主力軍,大噸位礦用自卸車的市場(chǎng)需求迅速提高。由于國(guó)內(nèi)技術(shù)的相對(duì)滯后,國(guó)內(nèi)在很長(zhǎng)一段時(shí)間內(nèi)對(duì)礦用自卸車的需求主要依賴進(jìn)口,為了改變這種格局,某公司成功研發(fā)了具有自主知識(shí)產(chǎn)權(quán)的KZ492型240噸大型礦用自卸車。 后橋殼作為礦用自卸車的主要承載部件之一,其性能的好壞一定程度上決定了整車的質(zhì)量。對(duì)于新產(chǎn)品的研發(fā)設(shè)計(jì)不可能通過大量的重復(fù)試驗(yàn)來(lái)獲得產(chǎn)品性能的品質(zhì),因此,本文借助先進(jìn)的虛擬仿真技術(shù),對(duì)后橋殼的靜動(dòng)態(tài)特性和疲勞壽命進(jìn)行了數(shù)值仿真分析。 本文首先利用ADAMS/View模塊,依據(jù)多體系統(tǒng)動(dòng)力學(xué)原理,建立了礦用自卸車的整車模型,對(duì)三種工況下的自卸車進(jìn)行了動(dòng)力學(xué)分析,輸出了后橋殼承載部位的受力曲線。 然后建立了后橋殼有限元分析模型,根據(jù)動(dòng)力學(xué)分析結(jié)果,對(duì)后橋殼進(jìn)行了靜力學(xué)分析,并將其應(yīng)力結(jié)果與試驗(yàn)結(jié)果進(jìn)行了對(duì)比分析,得出兩者誤差在工程允許范圍之內(nèi),從而驗(yàn)證了該模型的準(zhǔn)確性。另外,根據(jù)第四強(qiáng)度理論,對(duì)后橋殼進(jìn)行了強(qiáng)度校核,三種工況下的安全系數(shù)均大于1。同時(shí),還對(duì)后橋殼的動(dòng)態(tài)特性進(jìn)行了數(shù)值仿真模擬,得出了前16階模態(tài)分析的頻率和振型。 最后,借助MSC.Fatigue商業(yè)軟件,對(duì)正常工況和極限工況下的后橋殼疲勞壽命進(jìn)行了分析,得知后橋殼正常工況下的疲勞壽命能夠滿足使用要求,并且對(duì)不滿足要求的后橋殼極限工況下疲勞壽命進(jìn)行了優(yōu)化分析。同時(shí),本文還研究了后橋殼疲勞壽命對(duì)載荷變化的靈敏性,發(fā)現(xiàn)其對(duì)后橫拉桿和懸架支撐處的反作用力比較敏感。
[Abstract]:With the rapid development of economy in recent years, people's demand for resources is increasing day by day. As the main force of large-scale open-air ore site transportation, the market demand of large-tonnage dump truck is increasing rapidly. Because of the relative lag of domestic technology, the domestic demand for mine dump truck mainly depends on import for a long time. In order to change this pattern, a company has successfully developed the KZ492 type 240-ton large mine dump truck with independent intellectual property rights. As one of the main bearing parts of mine dump truck, the rear axle shell determines the quality of the whole truck to a certain extent. It is impossible to obtain the quality of the new product by a large number of repeated tests. Therefore, the static and dynamic characteristics and fatigue life of the rear axle shell are numerically simulated with the help of advanced virtual simulation technology. In this paper, based on the dynamic principle of multi-body system and Adams / View module, the whole truck model of mine dump truck is established, and the dynamic analysis of the dump truck under three working conditions is carried out, and the loading curve of the bearing part of the rear axle shell is outputted. Then the finite element analysis model of the rear axle shell is established. According to the dynamic analysis results, the static analysis of the rear axle shell is carried out, and the stress results are compared with the test results, and the error between the two is within the allowable range of the project. The accuracy of the model is verified. In addition, according to the fourth strength theory, the strength of the rear axle shell is checked. At the same time, the dynamic characteristics of the rear axle shell are simulated, and the frequency and mode shape of the first 16 order modal analysis are obtained. Finally, with the help of MSC.Fatigue commercial software, the fatigue life of the rear axle shell under normal and limiting conditions is analyzed, and it is found that the fatigue life of the rear axle shell under normal working conditions can meet the requirements. The fatigue life of the rear axle shell is optimized under the limit condition. At the same time, the sensitivity of the fatigue life of the rear axle shell to the load variation is also studied, and it is found that it is sensitive to the reaction force of the rear transverse tension bar and the suspension support.
【學(xué)位授予單位】：西安工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TD422

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 萬(wàn)海如,唐新蓬,段家典;重型礦用電動(dòng)輪自卸車的現(xiàn)狀和發(fā)展趨勢(shì)[J];汽車工業(yè)研究;2001年04期

2 魏建鋒,鄭修麟;原始載荷譜下拖拉機(jī)半軸的疲勞壽命預(yù)測(cè)[J];固體力學(xué)學(xué)報(bào);2000年02期

3 錢明華;;電動(dòng)輪自卸車技術(shù)發(fā)展概述[J];電工文摘;2009年04期

4 李瑞濤,方湄,張文明;虛擬樣機(jī)技術(shù)的概念及應(yīng)用[J];機(jī)電一體化;2000年05期

5 米承繼;谷正氣;伍文廣;陶?qǐng)?jiān);梁小波;彭國(guó)譜;;隨機(jī)載荷下礦用自卸車后橋殼疲勞壽命分析[J];機(jī)械工程學(xué)報(bào);2012年12期

6 劉建偉;;疲勞累積損傷理論發(fā)展概述[J];山西建筑;2008年23期

7 谷正氣;王備;李偉平;;大噸位礦用自卸車操縱穩(wěn)定性仿真分析[J];科技導(dǎo)報(bào);2009年01期

8 劉晉霞,張文明,董翠燕;鉸接式自卸車與剛性自卸車的比較[J];礦山機(jī)械;2003年09期

9 李勇;楊耀東;馬飛;;礦用電動(dòng)輪自卸車的概況及未來(lái)發(fā)展趨勢(shì)[J];礦山機(jī)械;2010年14期

10 于蓬;張為春;戴成;;某礦用自卸車車架的靜態(tài)有限元分析[J];煤礦機(jī)械;2010年06期

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