Wa700型裝載機工作裝置的動力學仿真及靜力學有限元分析
發(fā)布時間：2018-04-25 11:47
本文選題：剛?cè)狁詈?/strong> + 動臂�。� 參考：《內(nèi)蒙古科技大學》2014年碩士論文
【摘要】：用于裝運物料的工程機械設(shè)備有很多種，，而裝載機是其中應(yīng)用最為廣泛和普遍的一種，在多種場合都可以看見它的身影。由于用途廣泛，應(yīng)用場合較多，所以裝載機會經(jīng)歷在多種繁重、復(fù)雜工況下的工作。而多種繁重、復(fù)雜工況也會在不同程度上體現(xiàn)在裝載機相應(yīng)零件的損壞的情況，這就對裝載機的適應(yīng)性和其相應(yīng)的可靠性提出了更嚴峻的要求。同時，裝載機整體而言其工作裝置更是直接面對物料以及多種復(fù)雜情況進行作業(yè)，所以工作裝置的工作可靠性成為了裝載機設(shè)計工作中最為重要的一部分。而針對其重要性，需要對工作裝置進行更加深入的研究。研究所使用的方法主要為對工作裝置的動力學仿真分析及靜力學的有限元分析，找到相應(yīng)的不可靠的位置，經(jīng)行優(yōu)化對以提高裝載機作業(yè)效率及安全性。本課題以Wa700型裝載機工作裝置為例，經(jīng)行相應(yīng)的動靜相結(jié)合的分析方法，找出設(shè)計中的缺陷點，根據(jù)所得到的分析結(jié)果結(jié)合相關(guān)的設(shè)計標準、技術(shù)要求及生產(chǎn)實際中的發(fā)現(xiàn)，對工作裝置的相依的零部件進行了優(yōu)化，改善了工作裝置的零部件的設(shè)計方案。據(jù)此開展一下幾方面的工作： 1、根據(jù)三維實體模型建立及簡化的相應(yīng)的理論，結(jié)合動力學仿真和有限元分析的模型的需要，通過UG建立裝載機工作裝置的動臂、搖臂及連桿等模型。根據(jù)實際的裝配情況，對模型零件進行相應(yīng)的裝配，為裝載機工作裝置的動力學仿真和有限元分析研究完成前期的準備。 2、根據(jù)研究需要結(jié)合裝載機的實際情況，進行了工作裝置作業(yè)流程及相應(yīng)的工作狀況的分析，篩選出相應(yīng)的可能出現(xiàn)危險的典型工作狀況。同時，分析并計算了裝載機在一個完整的工作循環(huán)中受到的外載荷的力，得到裝載機受到的偏載情況和正載情況的力的大小。 3、根據(jù)多體動力學和虛擬樣機的相關(guān)理論，結(jié)合使用已經(jīng)建立好的三維模型，動力學仿真軟件ADASM和有限元仿真軟件ANSYS，建立裝載機工作裝置的剛?cè)狁詈夏Ｐ�，其中最為主要的動臂、搖臂和連桿為柔形體。完成了動力學仿真分析，獲得了工作裝置的相應(yīng)零件的動力學受力的實時的數(shù)據(jù)分析，同時可以更直觀的看到動臂、搖臂和連桿的應(yīng)力應(yīng)變圖。 4、根據(jù)有限元分析的相關(guān)理論結(jié)合前面的分析結(jié)果，使用ANSYS Workbench對工作裝置的核心部件動臂和連桿進行靜力學分析，得到了動臂和連桿各自在正載和偏載的情況下產(chǎn)生的應(yīng)力和應(yīng)變。再結(jié)合前面的動力學分析，找到動臂和連桿各自的危險區(qū)域。 5、根據(jù)機械設(shè)計優(yōu)化原理結(jié)合動力學仿真分析結(jié)果和有限元靜力學分析結(jié)果，進行了裝載機工作裝置動臂和連桿的優(yōu)化，并對工作裝置動臂和連桿的優(yōu)化結(jié)果進行再次的分析驗證。
[Abstract]:There are many kinds of construction machinery and equipment used to transport materials, and loader is one of the most widely used and widely used, it can be seen in a variety of occasions. Because of its wide application and many applications, the loader will experience many heavy and complicated working conditions. Many kinds of heavy and complex working conditions will also be reflected in different degrees of damage to the relevant parts of the loader, which puts forward a more severe requirement for the adaptability of the loader and its corresponding reliability. At the same time, the working device of the loader as a whole is directly facing the material and a variety of complex situations to work, so the working reliability of the working device has become the most important part of the loader design work. In view of its importance, it is necessary to do more in-depth research on the working device. The main methods used in the research are dynamic simulation analysis of the working device and finite element analysis of the statics to find the corresponding unreliable position and optimize the operation efficiency and safety of the loader. Taking the working device of Wa700 loader as an example, the paper finds out the defect points in the design by combining the analysis method with the corresponding dynamic and static analysis, and combines the relevant design standards, technical requirements and the findings in the production practice according to the analysis results obtained. The dependent parts of the working device are optimized and the design scheme of the parts is improved. Accordingly, the following areas of work have been carried out: 1. According to the corresponding theory of establishing and simplifying 3D solid model, combined with the need of dynamic simulation and finite element analysis model, the moving arm, rocker arm and connecting rod of loader working device are established by UG. According to the actual assembly conditions, the corresponding assembly of the model parts is carried out, which completes the preliminary preparation for the dynamic simulation and the finite element analysis of the working device of the loader. 2.According to the actual situation of the loader, the working flow of the working device and the corresponding working condition are analyzed, and the typical working conditions which may appear dangerous are screened out. At the same time, the external load force of the loader in a complete working cycle is analyzed and calculated, and the biasing load and the positive load force of the loader are obtained. 3. According to the theory of multi-body dynamics and virtual prototyping, the rigid-flexible coupling model of loader working device is established by using the established three-dimensional model, dynamics simulation software ADASM and finite element simulation software ANSYS. The main arm, rocker arm and connecting rod are flexible bodies. The dynamic simulation analysis is completed, and the real-time data analysis of the dynamic force of the corresponding parts of the working device is obtained. At the same time, the stress-strain diagram of the moving arm, rocker arm and connecting rod can be seen more intuitively. 4According to the relevant theory of finite element analysis and the results of the previous analysis, ANSYS Workbench is used to carry out the static analysis of the moving arm and connecting rod of the core components of the working device. The stress and strain of the moving arm and the connecting rod are obtained under the positive load and the eccentric load, respectively. Combined with the previous dynamic analysis, the moving arm and the link are found to be the respective danger zone. 5. According to the optimization principle of mechanical design and the result of dynamic simulation and finite element static analysis, the working arm and connecting rod of loader are optimized. The optimization results of the working arm and connecting rod are analyzed and verified again.
【學位授予單位】：內(nèi)蒙古科技大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TH243
【參考文獻】
相關(guān)期刊論文 前10條
1 于碩,閆涵;裝載機工作裝置的機構(gòu)分析[J];工程機械;2001年08期
2 寧曉斌;孟彬;姚宏;徐進永;;裝載機工作裝置強度的動態(tài)仿真研究[J];工程機械;2008年05期
3 石沛林;徐冠林;張立榮;;ZL50型裝載機鏟斗的應(yīng)力分析與結(jié)構(gòu)優(yōu)化設(shè)計[J];工程機械;2008年06期
4 鄭曉亞;尤軍峰;張鐸;徐超;;ADAMS和ANSYS在機構(gòu)分析中的應(yīng)用(英文)[J];固體火箭技術(shù);2010年02期
5 高秀華;王云超;安二中;韓佳偉;;基于ADAMS的裝載機工作裝置優(yōu)化[J];計算機仿真;2007年01期
6 王虎奇;陳樹勛;;基于ADAMS的裝載機前車架有限元分析載荷求解[J];機械設(shè)計與制造;2007年03期
7 龔捷;崔玉鑫;;裝載機鏟掘作業(yè)的軌跡規(guī)劃[J];機械工程學報;2009年07期
8 王國彪,施建春,遲峰,潘仲興;ZL30F裝載機搖臂強度有限元計算[J];建筑機械化;2003年01期
9 吳冰;陳波;;ADAMS動力學求解算法特性比較分析[J];內(nèi)江科技;2011年09期
10 鄭建校;李建新;賀利樂;羅丹;;基于APDL的裝載機工作裝置動臂參數(shù)化有限元分析[J];煤礦機械;2008年08期
本文編號：1801177
本文鏈接：http://sikaile.net/kejilunwen/jixiegongcheng/1801177.html
最近更新
教材專著
