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《.單缸柴油機(jī)曲軸的強(qiáng)度設(shè)計(jì)及剛度計(jì)算、疲勞強(qiáng)度校核 》由會員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在教育資源-天天文庫。
1、吉林大學(xué)《材料力學(xué)》課程設(shè)計(jì)設(shè)計(jì)計(jì)算說明書設(shè)計(jì)題目:單缸柴油機(jī)曲軸的強(qiáng)度設(shè)計(jì)及剛度計(jì)算、疲勞強(qiáng)度校核圖號:7-2數(shù)據(jù)號:I-11班級:411105班學(xué)號:411105XX姓名:李偉2目錄一、設(shè)計(jì)目的·····················································2二、設(shè)計(jì)任務(wù)和要求···············································22.1設(shè)計(jì)計(jì)算說明書的要求········································32.2分析討論及說明書部分的要求···············
2、···················32.3程序計(jì)算部分的要求··········································3三、設(shè)計(jì)題目·····················································4四、設(shè)計(jì)內(nèi)容·····················································54.1畫出曲軸的內(nèi)力圖············································54.2設(shè)計(jì)曲軸頸直徑d和主軸頸D····························
3、······74.3校核曲柄臂的強(qiáng)度············································824.4校核主軸頸H-H截面處的疲勞強(qiáng)度······························104.5用能量法計(jì)算A-A截面的轉(zhuǎn)角···························11五、分析討論及必要說明···········································14六、設(shè)計(jì)的改進(jìn)措施及方法·········································14七、設(shè)計(jì)體會·················
4、····································15八、參考文獻(xiàn)·····················································16九、附錄·························································172一、設(shè)計(jì)目的本課程設(shè)計(jì)是在系統(tǒng)學(xué)完材料力學(xué)課程之后,結(jié)合工程實(shí)際中的問題,運(yùn)用材料力學(xué)的基本理論和計(jì)算方法,獨(dú)立地計(jì)算工程中的典型零部件,以達(dá)到綜合利用材料力學(xué)知識解決工程實(shí)際問題的目的。同時,可以使學(xué)生將材料力學(xué)的理論和現(xiàn)代計(jì)算方法及手段融為一體,既從整體上掌握
5、了基本理論和現(xiàn)代計(jì)算方法,又提高了分析問題、解決問題的能力;既是對以前所學(xué)知識(高等數(shù)學(xué)、工程圖學(xué)、理論力學(xué)、算法語言、計(jì)算機(jī)和材料力學(xué)等)的綜合運(yùn)用,又為后續(xù)課程的學(xué)習(xí)打下基礎(chǔ),并初步掌握工程設(shè)計(jì)思路和設(shè)計(jì)方法,使實(shí)際工作能力有所提高。具體有以下六項(xiàng):1.使所學(xué)的材料力學(xué)知識系統(tǒng)化、完整化。2.在系統(tǒng)全面復(fù)習(xí)的基礎(chǔ)上,運(yùn)用材料力學(xué)知識解決工程實(shí)際中的問題。3.由于選題力求結(jié)合專業(yè)實(shí)際,課程設(shè)計(jì)可把材料力學(xué)與專業(yè)需要結(jié)合起來。4.綜合運(yùn)用以前所學(xué)的各門課程的知識(高等數(shù)學(xué)、工程圖學(xué)、理論力學(xué)、算法語言、計(jì)算機(jī)等),使相關(guān)學(xué)科的知識有機(jī)地聯(lián)系起來。5.初步了解和掌握工程實(shí)際中的設(shè)計(jì)思路
6、和設(shè)計(jì)方法。6.為后續(xù)課程的教學(xué)打下基礎(chǔ)。二、設(shè)計(jì)任務(wù)和要求參加設(shè)計(jì)者要系統(tǒng)復(fù)習(xí)材料力學(xué)課程的全部基本理論和方法,獨(dú)立分析、判斷設(shè)計(jì)題目的已知條件和所求問題,畫出受力分析計(jì)算簡圖和內(nèi)力圖,列出理論依據(jù)并到處計(jì)算公式,獨(dú)立編制計(jì)算機(jī)程序,通過計(jì)算機(jī)給出計(jì)算結(jié)果,并完成設(shè)計(jì)計(jì)算說明書。242.1設(shè)計(jì)計(jì)算說明書的要求設(shè)計(jì)計(jì)算說明書是該題目設(shè)計(jì)思想、設(shè)計(jì)方法和設(shè)計(jì)結(jié)果的說明。要求書寫工整,語言簡練,條理清晰、明確,表達(dá)完整。具體內(nèi)容應(yīng)包括:(1)設(shè)計(jì)題目的已知條件、所求及零件圖;(2)畫出構(gòu)件的受力分析計(jì)算簡圖,按比例標(biāo)明尺寸,載荷及支座等;(3)靜不定結(jié)構(gòu)要畫出所選擇的基本靜定系統(tǒng)及與之相
7、應(yīng)的全部求解過程;(4)畫出全部內(nèi)力圖,并標(biāo)明可能的各危險截面;(5)危險截面上各種應(yīng)力的分布規(guī)律圖及由此判定各危險點(diǎn)處應(yīng)力狀態(tài)圖;(6)各危險點(diǎn)的主應(yīng)力大小及主平面位置;(7)選擇強(qiáng)度理論并建立強(qiáng)度條件;(8)列出全部計(jì)算過程的理論根據(jù)、公式推導(dǎo)過程以及必要的說明;(9)對變形及剛度分析要寫明所用的能量法計(jì)算過程及必要的內(nèi)力圖和單位力圖;(10)疲勞強(qiáng)度計(jì)算部分要說明循環(huán)特征,的計(jì)算,所查各系數(shù)的依據(jù),疲勞強(qiáng)度校核過程及結(jié)果,并繪出構(gòu)件的持久極限曲線。2