發(fā)布時(shí)間：2018-01-11 08:24

  本文關(guān)鍵詞：風(fēng)力發(fā)電機(jī)組高強(qiáng)度螺栓連接技術(shù)研究　出處：《重慶大學(xué)》2011年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 風(fēng)力發(fā)電 高強(qiáng)度螺栓 VDI2230 Schmidt/Neuper模型

【摘要】：高強(qiáng)度螺栓作為最常用的一種零部件,相比普通螺栓在同規(guī)格的情況下,具有承受載荷大,受力性能好,耐疲勞以及在動(dòng)力載荷作用下不易松動(dòng)等優(yōu)點(diǎn),在鋼結(jié)構(gòu)中得到廣泛的應(yīng)用。同樣,在大型風(fēng)力發(fā)電機(jī)組中高強(qiáng)度螺栓被大量采用,為適應(yīng)更大功率的風(fēng)力發(fā)電機(jī)組的自主設(shè)計(jì)開(kāi)發(fā),保證整個(gè)風(fēng)力發(fā)電機(jī)組的運(yùn)行可靠性,滿(mǎn)足風(fēng)電制造企業(yè)的需求。論文以材料力學(xué)、彈性力學(xué)、VDI2230高強(qiáng)度螺栓連接理論、Schmidt/Neuper高強(qiáng)度螺栓計(jì)算模型等為基礎(chǔ),并參照德國(guó)勞埃德船級(jí)社(GL)風(fēng)力發(fā)電機(jī)組認(rèn)證規(guī)范。采用有限元數(shù)值仿真和工程計(jì)算相結(jié)合的方法,對(duì)大型風(fēng)力發(fā)電機(jī)組中關(guān)鍵部位高強(qiáng)度螺栓連接進(jìn)行分析,系統(tǒng)地研究了高強(qiáng)度螺栓連接分析方法,以填補(bǔ)國(guó)內(nèi)空白。 論文主要研究?jī)?nèi)容及結(jié)構(gòu)如下: 第一章:以國(guó)內(nèi)外風(fēng)力發(fā)電技術(shù)的研究及發(fā)展趨勢(shì)為背景,研究分析了高強(qiáng)度螺栓連接的國(guó)內(nèi)外研究和應(yīng)用情況,并提出論文研究的意義和主要內(nèi)容。 第二章:系統(tǒng)地研究了高強(qiáng)度螺栓連接理論—VDI2230和Schmidt /Neuper高強(qiáng)度螺栓計(jì)算模型,為分析風(fēng)力發(fā)電機(jī)組中關(guān)鍵部位高強(qiáng)度螺栓連接奠定理論基礎(chǔ)。 第三章:以某兆瓦級(jí)風(fēng)力發(fā)電機(jī)組中的各塔筒段法蘭連接處及地基預(yù)埋件連接處高強(qiáng)度螺栓為分析對(duì)象,并結(jié)合詳細(xì)結(jié)構(gòu)尺寸和第二章研究的高強(qiáng)度螺栓連接理論,進(jìn)行了工程計(jì)算校核分析。 第四章:綜合考慮幾何結(jié)構(gòu)的復(fù)雜性、構(gòu)件之間的非線(xiàn)性接觸關(guān)系等,采用有限元數(shù)值仿真的方法,研究了塔筒頂端偏航軸承內(nèi)、外圈連接處高強(qiáng)度螺栓的極限強(qiáng)度及疲勞壽命。 第五章:綜合考慮主機(jī)架、輔助機(jī)架等假體的影響及非線(xiàn)性接觸關(guān)系,建立了包括主機(jī)架、輔助機(jī)架、連接用高強(qiáng)度螺栓的有限元模型,對(duì)主、輔助機(jī)架連接用高強(qiáng)度螺栓進(jìn)行了極限強(qiáng)度分析。 第六章:論文的研究結(jié)論和展望。
[Abstract]:As one of the most commonly used parts, high strength bolts have the advantages of large load, good mechanical performance, fatigue resistance and not easy loosening under dynamic load, compared with common bolts under the same specifications. It is widely used in steel structure. Similarly, high strength bolts are widely used in large scale wind turbine, so as to adapt to the independent design and development of more powerful wind turbines. To ensure the operational reliability of the whole wind turbine, to meet the needs of wind power manufacturing enterprises. This paper is based on the theory of material mechanics, elasticity and VDI2230 high strength bolt connection. Schmidt/Neuper high strength bolt calculation model and so on. The method of combining finite element numerical simulation with engineering calculation is adopted according to the certification code of German Lloyd's Classification Society (GLL) wind turbine generator. This paper analyzes the connection of high strength bolt in the key part of large wind turbine, and systematically studies the analysis method of high strength bolt connection in order to fill the gap in our country. The main contents and structure of this thesis are as follows: Chapter 1: based on the research and development trend of wind power generation technology at home and abroad, the research and application of high strength bolted connection are analyzed, and the significance and main contents of this paper are put forward. Chapter 2: the theory of high strength bolt connection-VDI2230 and Schmidt / Neuper high strength bolt model are studied systematically. It lays a theoretical foundation for the analysis of high strength bolt connection in key parts of wind turbine. Chapter three: take the high-strength bolts of flange connection of each tower and tube section and foundation embedded parts in a megawatt wind turbine as the analysis object. Combined with the detailed structure dimension and the theory of high strength bolt connection studied in the second chapter, the engineering calculation and verification analysis are carried out. Chapter 4th: considering the complexity of geometric structure and the nonlinear contact relationship between members, the finite element numerical simulation method is used to study the inner of the yaw bearing at the top of the tower and cylinder. Ultimate strength and fatigue life of high strength bolts at outer ring connections. Chapter 5th: considering the influence of mainframe, auxiliary frame and other prosthesis and nonlinear contact relationship, the finite element model including mainframe, auxiliary frame and high strength bolt is established. The ultimate strength analysis of high strength bolt used in auxiliary frame connection is carried out. Chapter 6th: the conclusion and prospect of the thesis.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類(lèi)號(hào)】：TM315;TH131.3

【引證文獻(xiàn)】

相關(guān)期刊論文 前2條

1 王浩;高云燕;;風(fēng)機(jī)齒輪箱漏油對(duì)塔筒螺栓連接的影響[J];機(jī)械傳動(dòng);2013年06期

2 何玉林;王秀文;丁帥銘;杜靜;;MW級(jí)風(fēng)力發(fā)電機(jī)組變槳螺栓疲勞壽命分析[J];機(jī)械設(shè)計(jì);2013年07期

相關(guān)博士學(xué)位論文 前1條

1 陳廣華;風(fēng)力發(fā)電機(jī)組組合式葉片結(jié)構(gòu)設(shè)計(jì)研究[D];華北電力大學(xué);2013年

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本文編號(hào)：1408825