發(fā)布時(shí)間：2018-05-07 00:07

  本文選題：ANSYS + 起重機(jī)金屬結(jié)構(gòu)��； 參考：《鄭州大學(xué)》2017年碩士論文

【摘要】：近年來(lái),隨著工業(yè)生產(chǎn)率的提高,起重機(jī)使用頻率越來(lái)越高且大部分運(yùn)行時(shí)間處在高應(yīng)力水平下,容易造成金屬結(jié)構(gòu)疲勞破壞甚至引發(fā)安全事故。國(guó)內(nèi)外針對(duì)起重機(jī)剩余疲勞壽命估算做出很多研究,有些停留在理論層面,有些針對(duì)起重機(jī)來(lái)說(shuō)適用性不足。因此,考慮起重機(jī)實(shí)際工作情況,選取合適壽命預(yù)測(cè)方法,在商用軟件基礎(chǔ)上進(jìn)行二次開(kāi)發(fā),可以提高起重機(jī)金屬結(jié)構(gòu)的設(shè)計(jì)效率和質(zhì)量�；诖�,本文詳細(xì)討論了起重機(jī)金屬結(jié)構(gòu)壽命評(píng)估中用到的關(guān)鍵技術(shù),利用VB語(yǔ)言和ANSYS二次開(kāi)發(fā)語(yǔ)言APDL,開(kāi)發(fā)了起重機(jī)金屬結(jié)構(gòu)疲勞壽命評(píng)估系統(tǒng),并給出了具體的工程應(yīng)用實(shí)例。論文主要內(nèi)容如下:(1)闡述了國(guó)內(nèi)外起重機(jī)金屬結(jié)構(gòu)疲勞壽命研究現(xiàn)狀,分類(lèi)總結(jié)疲勞壽命預(yù)測(cè)方法,介紹了參數(shù)化技術(shù)、有限元分析技術(shù)、Visual Basic二次開(kāi)發(fā)技術(shù)等課題研究中涉及到的理論知識(shí)。(2)利用ANSYS軟件對(duì)型號(hào)為QD15/6.5t-25.5m的雙梁橋式起重機(jī)和型號(hào)為MG30/20t-22m的A型雙剛腿門(mén)式起重機(jī)進(jìn)行參數(shù)化建模及有限元靜態(tài)分析,驗(yàn)證起重機(jī)金屬結(jié)構(gòu)有限元模型的正確性。(3)在金屬結(jié)構(gòu)滿足靜強(qiáng)度設(shè)計(jì)要求的前提下,提供了基于Paris公式、Paris公式與Miner線性累積損傷理論相結(jié)合、熱點(diǎn)應(yīng)力法的三種不同壽命估算模型,來(lái)評(píng)估起重機(jī)金屬結(jié)構(gòu)疲勞壽命,同時(shí)對(duì)影響疲勞壽命預(yù)測(cè)結(jié)果的因素進(jìn)行分析和討論,有助于合理地評(píng)估起重機(jī)的安全性能。(4)利用Visual Basic軟件對(duì)橋門(mén)式起重機(jī)金屬結(jié)構(gòu)數(shù)值仿真及疲勞壽命評(píng)估過(guò)程進(jìn)行封裝,并添加尺寸優(yōu)化模塊,實(shí)現(xiàn)計(jì)算的自動(dòng)化、參數(shù)化。
[Abstract]:In recent years, with the increase of industrial productivity, crane use frequency is more and more high and most of the running time is in high stress level, which can easily cause fatigue damage of metal structures and even lead to safety accidents. Many researches have been done on the estimation of the residual fatigue life of cranes at home and abroad, some of which remain at the theoretical level and some are not suitable for cranes. Therefore, the design efficiency and quality of crane metal structure can be improved by selecting suitable life prediction method and secondary development on the basis of commercial software considering the actual working conditions of crane. Based on this, this paper discusses in detail the key technologies used in the life evaluation of crane metal structures, and develops a crane metal structure fatigue life evaluation system by using VB language and ANSYS secondary development language. An example of engineering application is given. The main contents of this paper are as follows: (1) the present situation of research on fatigue life of crane metal structures at home and abroad is expounded, the fatigue life prediction methods are classified and summarized, and the parameterized technology is introduced. The theory knowledge involved in the research of Visual Basic secondary development technology is discussed in the finite element analysis technology. (2) the parameterized construction of double girder bridge crane with QD15/6.5t-25.5m and A type double rigid leg gantry crane with MG30/20t-22m is carried out by using ANSYS software. Model and finite element static analysis, It is verified that the finite element model of crane metal structure is correct. On the premise that the metal structure meets the requirements of static strength design, the combination of Paris formula and Miner linear cumulative damage theory is provided. Three different life estimation models of hot spot stress method are used to evaluate the fatigue life of crane metal structures, and the factors influencing the prediction results are analyzed and discussed. Visual Basic software is used to encapsulate the metal structure numerical simulation and fatigue life evaluation process of bridge gantry crane, and to add dimension optimization module to realize the calculation automation and parameterization.
【學(xué)位授予單位】：鄭州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TH21

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張彥華;劉娟;杜子瑞;陶博浩;;焊接結(jié)構(gòu)的疲勞評(píng)定方法[J];航空制造技術(shù);2016年11期

2 嚴(yán)飛;于蘭峰;韓偉;唐輝;;橋式起重機(jī)箱形主梁焊縫疲勞壽命研究[J];機(jī)械設(shè)計(jì)與制造;2015年06期

3 蔡福海;王欣;高順德;趙福令;;起重機(jī)結(jié)構(gòu)疲勞強(qiáng)度與壽命評(píng)估方法分析[J];中國(guó)工程機(jī)械學(xué)報(bào);2014年02期

4 陳江義;呂海勇;羅琳麗;;基于Verity方法的起重機(jī)箱型主梁疲勞壽命分析[J];制造業(yè)自動(dòng)化;2014年02期

5 程文明;李亞民;張則強(qiáng);;橋式起重機(jī)與門(mén)式起重機(jī)輕量化設(shè)計(jì)的關(guān)鍵要素[J];中國(guó)工程機(jī)械學(xué)報(bào);2012年01期

6 張玉琴;竇玉香;郜擁軍;馮山嶺;;橋式起重機(jī)主梁結(jié)構(gòu)剩余疲勞壽命估算[J];中國(guó)重型裝備;2008年02期

7 徐格寧;左斌;;起重機(jī)結(jié)構(gòu)疲勞剩余壽命評(píng)估方法研究[J];中國(guó)安全科學(xué)學(xué)報(bào);2007年03期

8 王小慧;程文明;楊春松;宿艷彩;;起重機(jī)金屬結(jié)構(gòu)有限元分析的模型處理技術(shù)[J];起重運(yùn)輸機(jī)械;2006年09期

9 程文明,王金諾;橋門(mén)式起重機(jī)疲勞裂紋擴(kuò)展壽命的模擬估算[J];起重運(yùn)輸機(jī)械;2001年02期

10 翟甲昌，王生，申增元，李億祥;橋式起重機(jī)焊接箱形梁的疲勞試驗(yàn)[J];起重運(yùn)輸機(jī)械;1994年02期

相關(guān)博士學(xué)位論文 前3條

1 蔡福海;起重機(jī)桁架臂疲勞壽命與可靠性研究[D];大連理工大學(xué);2014年

2 王愛(ài)紅;橋式起重機(jī)載荷譜獲取方法及疲勞剩余壽命評(píng)估研究[D];蘭州理工大學(xué);2012年

3 鄭夕健;基于神經(jīng)網(wǎng)絡(luò)的塔式起重機(jī)結(jié)構(gòu)有效壽命理論及技術(shù)實(shí)現(xiàn)[D];東北大學(xué);2010年

，

本文編號(hào)：1854500