本文選題：門式斗輪堆取料機(jī) + 有限元��； 參考：《吉林大學(xué)》2012年碩士論文

【摘要】：MDQ1250/1250.50型門式斗輪堆取料機(jī)屬于大型復(fù)雜鋼結(jié)構(gòu)，主要工作在大型水利工地等工礦企業(yè)的儲(chǔ)料場(chǎng)，用于火力發(fā)電。是高效連續(xù)堆取散裝物料的理想設(shè)備。該機(jī)主體結(jié)構(gòu)由剛性腿、柔性腿、活動(dòng)梁、固定梁、端梁、起升機(jī)構(gòu)、斜升膠帶機(jī)、斗輪機(jī)、取料膠帶機(jī)、移動(dòng)膠帶機(jī)、司機(jī)室、主機(jī)梯子平臺(tái)、電氣系統(tǒng)、灑水裝置等組成。模型的理論設(shè)計(jì)階段已經(jīng)完成，現(xiàn)在我們要運(yùn)用CAE(ComputerAidedEngineering)商業(yè)軟件對(duì)其進(jìn)行有限元分析，確保設(shè)備的可靠運(yùn)行。我們主要針對(duì)金屬結(jié)構(gòu)進(jìn)行計(jì)算校核，主要包括：強(qiáng)度計(jì)算及校核、剛度計(jì)算及校核、穩(wěn)定性計(jì)算及校核以及特殊部件的校核，發(fā)現(xiàn)設(shè)計(jì)不合理之處，為廠方提供修改方案進(jìn)行設(shè)備優(yōu)化，并為其設(shè)計(jì)提供理論依據(jù)。由于本項(xiàng)目設(shè)計(jì)工作采用的是AutoCAD軟件，與有限元分析軟件不存在數(shù)據(jù)接口，所以我們只能夠根據(jù)廠方提供的圖紙手工建立計(jì)算模型。本論文主要采用有限元分析方法對(duì)設(shè)備的金屬結(jié)構(gòu)部分進(jìn)行靜力計(jì)算及分析。 在該項(xiàng)目中的建模部分以及計(jì)算分析過程都是在Pro/Engineer軟件中完成。這款設(shè)計(jì)分析軟件功能非常強(qiáng)大，并且Pro/E的建模和分析模塊可以無縫連接，即可以直接進(jìn)入Pro/Mechanica進(jìn)行有限元分析計(jì)算，它可以進(jìn)行全局參數(shù)化驅(qū)動(dòng)，并且有數(shù)據(jù)相關(guān)性，即建模時(shí)的尺寸修改可以直接修改有限元模型。在有限元分析計(jì)算的過程中的難點(diǎn)在于模型的鏈接處理，并且進(jìn)行整機(jī)分析，模型的規(guī)模也很大，因此要進(jìn)行合理的模型簡(jiǎn)化，達(dá)到計(jì)算效率和結(jié)果精度的平衡。在此基礎(chǔ)之上我們還對(duì)整機(jī)進(jìn)行了模態(tài)分析，通過計(jì)算十階固有頻率與外部激勵(lì)的頻率進(jìn)行對(duì)比來判斷結(jié)構(gòu)是否會(huì)發(fā)生共振而導(dǎo)致現(xiàn)場(chǎng)事故。經(jīng)過我們的計(jì)算，通過對(duì)計(jì)算結(jié)果的分析我們針對(duì)整個(gè)結(jié)構(gòu)的設(shè)計(jì)提出了一些改進(jìn)方案，以此滿足計(jì)算要求，保證現(xiàn)場(chǎng)工作的安全。同時(shí)還對(duì)剛性支腿進(jìn)行了質(zhì)量?jī)?yōu)化設(shè)計(jì)研究，雖然在質(zhì)量?jī)?yōu)化設(shè)計(jì)中還有很多因素沒有考慮，但是對(duì)以后的設(shè)計(jì)及后續(xù)改進(jìn)提供了一定的參考依據(jù)。 通過該項(xiàng)目的計(jì)算，可以更加深刻的了解到CAE技術(shù)在生產(chǎn)實(shí)際中的重要地位，CAE不需要樣品才能分析，只要有數(shù)模就可以，這樣在生產(chǎn)樣品之前就可以做仿真，做若干的修改，得到一個(gè)較好的方案，然后再進(jìn)行樣品生產(chǎn)，批量生產(chǎn)。CAE重要的就是要算得準(zhǔn)，否則也就沒有意義了，對(duì)外界條件而言，需要有好的軟件以及具有強(qiáng)大運(yùn)算能力的計(jì)算機(jī)；對(duì)人而言，，這需要較強(qiáng)的軟件操作能力，深厚的理論知識(shí)，以及豐富的經(jīng)驗(yàn)。CAE技術(shù)在很多方面都有應(yīng)用，為工程實(shí)際做出了巨大貢獻(xiàn)。
[Abstract]:MDQ1250/1250.50 type door bucket wheel stacker is a large and complex steel structure which mainly works in the material storage fields of large water conservancy sites and other industrial and mining enterprises and is used for thermal power generation. It is an ideal equipment for high efficiency and continuous stacking of bulk materials. The main structure of the machine is composed of rigid leg, flexible leg, movable beam, fixed beam, end beam, lifting mechanism, inclined belt conveyor, bucket wheel machine, tape taker, moving tape machine, driver's room, main engine ladder platform, electrical system, sprinkler, etc. The theoretical design stage of the model has been completed, and now we need to use the commercial software of CAEX computer aided Engineering to analyze the finite element method to ensure the reliable operation of the equipment. We mainly carry out calculation and check for metal structure, mainly include: strength calculation and check, stiffness calculation and check, stability calculation and check and special parts check. To provide the modification scheme for the equipment optimization, and to provide theoretical basis for its design. Because the AutoCAD software is used in the design of the project and there is no data interface with the finite element analysis software, we can only build the calculation model manually according to the drawings provided by the factory. In this paper, the finite element analysis method is used to calculate and analyze the metal structure of the equipment. The modeling part of the project and the process of calculation and analysis are completed in Pro/Engineer software. This design and analysis software is very powerful, and the modeling and analysis module of Pro/E can be seamlessly connected, that is, it can directly enter Pro/Mechanica for finite element analysis and calculation, it can be driven by global parameterization and has data correlation. That is to say, the finite element model can be modified directly by modifying the size of the model. In the process of finite element analysis and calculation, the difficulty lies in the link processing of the model and the analysis of the whole machine, and the scale of the model is also very large. Therefore, the reasonable simplification of the model should be carried out to achieve the balance between the calculation efficiency and the precision of the result. On the basis of this, the modal analysis of the whole machine is carried out. By comparing the natural frequency of the tenth order with the frequency of the external excitation, we can judge whether the structure will resonate or not, which will lead to the accident in the field. Through our calculation, through the analysis of the calculation results, we put forward some improved schemes for the design of the whole structure, so as to meet the requirements of calculation and ensure the safety of the field work. At the same time, the quality optimization design of the rigid leg is studied. Although there are still many factors in the quality optimization design, it provides a certain reference for the future design and subsequent improvement. Through the calculation of this project, we can get a deeper understanding of the important position of CAE technology in the practice of production. We do not need samples to be analyzed, as long as there are digital and analog models, so that we can do simulation and make a number of modifications before the samples are produced. Get a better plan, then sample production, batch production. CAE is important to calculate accurately, otherwise there is no point, for the external conditions, need to have good software and powerful computing ability of the computer; For people, this requires strong software operation ability, profound theoretical knowledge, and rich experience. CAE technology has been applied in many aspects, which has made great contribution to engineering practice.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH237

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