本文關(guān)鍵詞： 造船 龍門起重機(jī) 載荷譜 疲勞 疲勞壽命　出處：《武漢理工大學(xué)》2012年碩士論文　論文類型：學(xué)位論文

【摘要】：造船龍門起重機(jī)是一種水平橋架設(shè)置在剛、柔兩條支腿上構(gòu)成的門架形狀的起重設(shè)備,主要用于船塢拼裝船體。由于其橫跨在船塢上,能覆蓋船塢平面為裝配現(xiàn)場服務(wù),不僅具有升降、平移等功能,而且可以實現(xiàn)船體分段的空中翻身,把分段調(diào)節(jié)到焊接所需位置,大大提高了造船效率,因而在船廠得到廣泛應(yīng)用。 作為造船行業(yè)重要的輔助設(shè)備,造船龍門起重機(jī)所吊運的重物多種多樣,載荷也是復(fù)雜多變的,其動態(tài)特性較為明顯,容易發(fā)生疲勞破壞。對于大起重量、大跨度、大起重高度的造船龍門起重機(jī)而言,一旦發(fā)生疲勞破壞,后果往往十分嚴(yán)重。所以,展開對造船龍門起重機(jī)金屬結(jié)構(gòu),尤其是其疲勞累計損傷規(guī)律和疲勞計算的研究,對于預(yù)防疲勞斷裂事故的發(fā)生,指導(dǎo)相關(guān)龍門起重機(jī)的設(shè)計、制造、檢驗與管理具有重要意義。 本文以載荷譜、疲勞、疲勞壽命、概率論等相關(guān)知識為基礎(chǔ),依據(jù)調(diào)研獲得的數(shù)據(jù),對造船龍門起重機(jī)進(jìn)行了如下的研究工作： 1)：在介紹載荷譜及疲勞壽命的研究現(xiàn)狀及發(fā)展后,闡述了載荷譜及疲勞壽命的基本概念、疲勞壽命預(yù)估方法分類、文章的意義及主要完成的工作。 2)：介紹了載荷譜的含義、編制的要求和方法分類,接著探尋了造船起重機(jī)載荷譜編制的一般方法,為后續(xù)造船龍門起重機(jī)載荷譜的編制做了必要的準(zhǔn)備工作。 3)：根據(jù)前述載荷編制要求和編制方法,結(jié)合調(diào)研的吊載統(tǒng)計數(shù)據(jù),具體編制造船龍門起重機(jī)載荷譜。 4)：介紹了疲勞壽命估算的幾個分析方法后,接著結(jié)合文章實際,受線性累計損傷理論啟發(fā),在造船龍門起重機(jī)載荷譜基礎(chǔ)上提出一種預(yù)估其疲勞壽命的新方法,并采用英國BS5400標(biāo)準(zhǔn)校核其疲勞強(qiáng)度。
[Abstract]:The invention relates to a gantry crane for shipbuilding , which is a lifting device which is arranged on a portal frame formed on the rigid and flexible legs of a horizontal bridge frame , and is mainly used for assembling a ship body of a dock . As an important auxiliary equipment in shipbuilding industry , the heavy objects transported by shipbuilding gantry crane are various , and the load is complicated and changeable , and its dynamic characteristics are obvious and fatigue damage is easy to occur . Therefore , it is very important to guide the design , manufacture , inspection and management of gantry crane with large starting weight , large span and large lifting height . Therefore , it is of great significance to guide the design , manufacture , inspection and management of gantry crane . Based on the relevant knowledge of load spectrum , fatigue , fatigue life and probability theory , this paper studies the shipbuilding gantry crane as follows : 1 ) After introducing the research status and development of the load spectrum and fatigue life , the basic concepts of load spectrum and fatigue life , the classification of fatigue life prediction method , the significance of the article and the main work are described . 2 ) The meaning of the load spectrum , the requirements and the classification of the method are introduced , then the general method of the load spectrum of the shipbuilding crane is explored , and the necessary preparations are made for the compilation of the load spectrum of the gantry crane . 3 ) According to the above - mentioned load compiling requirements and the compilation method , the load spectrum of the gantry crane of the shipbuilding gantry crane is specially prepared in combination with the survey data . 4 ) After introducing several analysis methods of fatigue life estimation , a new method for estimating its fatigue life is proposed based on the load spectrum of gantry crane , and its fatigue strength is checked by BS5400 standard .

【學(xué)位授予單位】：武漢理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH213.5

【參考文獻(xiàn)】

相關(guān)期刊論文 前9條

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本文編號：1467481