【正文】 NSYS 軟件簡(jiǎn)介 ........................................................................................ 4 2． 基于 Pro/E 的參數(shù)化齒輪建模 ............................................................................ 5 斜齒輪零件分析 .................................................................................................. 5 斜齒輪齒廓的形成原理 .................................................................................... 5 斜齒輪的基本參數(shù) .............................................................................................. 6 斜齒輪建模命 令介紹 ......................................................................................... 8 可變剖面掃描 ................................................................................................ 8 創(chuàng)建基準(zhǔn)曲面命令 ........................................................................................ 9 斜齒輪單齒建模 .................................................................................................. 9 輸入斜齒輪參數(shù) ............................................................................................ 9 創(chuàng)建螺旋線和直線基準(zhǔn)曲線 ...................................................................... 10 創(chuàng)建斜齒輪毛坯基礎(chǔ)實(shí)體特征 .................................................................. 11 創(chuàng)建第一個(gè)齒面 .......................................................................................... 12 創(chuàng)建斜齒輪的第一個(gè)齒槽 .......................................................................... 14 對(duì)齒槽進(jìn)行復(fù)制和陣列 .............................................................................. 16 切剪斜齒輪單齒模型 .................................................................................. 17 斜齒輪參數(shù)化建模小結(jié) .................................................................................. 17 3． 基于 ANSYS 的單齒應(yīng)力分析 ............................................................................. 18 ANSYS 中靜力學(xué)分析概論 ........................................................................... 18 從 CAD 圖形中導(dǎo)入實(shí)體模型 ...................................................................... 18 定義單元類型和材料參數(shù) .............................................................................. 19 定義單元類型 .............................................................................................. 19 定義材料參數(shù) .............................................................................................. 22 實(shí)體模型網(wǎng)格劃分 ............................................................................................ 23 運(yùn)用 Mesh Tool 進(jìn)行網(wǎng)格劃分 ................................................................ 23 施加自由度約束 .......................................................................................... 24 加載分析 .............................................................................................................. 24 加載位置 ...................................................................................................... 24 加載方向及大小 .......................................................................................... 25 關(guān)于加載方式的討論 .................................................................................. 25 求解及其結(jié)果 ..................................................................................................... 28 4． 結(jié)論及分析 ................................................................................................................. 31 結(jié)束語 .................................................................................................................................. 32 參考文獻(xiàn) .............................................................................................................................. 33 致謝 ....................................................................................................................................... 34 I 基于 ANSYS 的斜齒圓柱齒輪的單齒有限元分析 摘 要 傳統(tǒng)的齒輪強(qiáng)度設(shè)計(jì)主要由手工完成，把齒輪當(dāng)作懸臂梁來設(shè)計(jì)校核齒根彎曲強(qiáng)度和齒面接觸強(qiáng)度，這種方法受齒輪結(jié)構(gòu)形狀和受力的影響，容易產(chǎn)生較大的誤差?，F(xiàn)代工業(yè)的一個(gè)典型特征是計(jì)算機(jī)的大量應(yīng)用，無論是產(chǎn)品的開發(fā)、設(shè)計(jì)環(huán)節(jié)，還是分析、制造過程中，計(jì)算機(jī)的應(yīng)用都極大地提高了效率和質(zhì)量。 本文以 Pro/E 軟件作為建模平臺(tái)，對(duì)漸開線斜齒圓柱齒輪的參數(shù)化建模方法及關(guān)鍵技術(shù)進(jìn)行了介紹，并以 ANSYS 軟件作為有限元分析平臺(tái)，對(duì)齒輪進(jìn)行了齒根彎曲強(qiáng)度分析，模擬齒輪受載情況，迅速、高效地得出整個(gè)輪齒的強(qiáng)度、剛度分布云圖。 關(guān)鍵詞 ： ANSYS； Pro/E；斜齒圓柱齒輪；有限元分析方法；齒根彎曲應(yīng)力；載荷 華中科技大學(xué)文華學(xué)院畢業(yè) 設(shè)計(jì)（論文） II Finite element analysis of helical gear single tooth based on ANSYS Abstract The traditional gear design of Strength is mainly pleted by hand, it seemed to a cantilever, design and check it’s tooth root bending strength and tooth surface contact strength. Because of the affect of gear’s structure, shape and force, this method will bring in large mistake. The popular application of puter is a typical feature of modern industry. Not only in product’s development and design but also in product’s analysis, and manufacturing processes, puter applications have greatly improved the efficiency and quality. In recent years with the popularization of puter technology and the continuous improvement of calculating speed, finite element analysis method has bee the effective way to solve plex engineering analysis and calculation problem in engineering design and analysis. In this paper, we use Pro / E software as the modeling platform and introduce the parametric modeling methods and key technologies of the involutes’ helical gears. At the same time with ANSYS finite element analysis software, we carry out on the gear tooth root strength analysis, simulation gears III under load conditions and quickly and efficiently draw the teeth of the strength, rigidity contours. Studies show that the finite element analysis’ conclusions consistent with the experimental results, greatly improved the design efficiency of the gear. Key Words: ANSYS。 Helical Cylindrical Gear。 The bending stress on tooth root。但是齒輪往往容易出故障，在傳動(dòng)系統(tǒng)中作為載荷的主要承擔(dān)者和傳遞動(dòng)力的重要中堅(jiān)力，齒輪在工作中經(jīng)常發(fā)生輪齒斷裂或嚴(yán)重變形的情況。齒輪 失效主要發(fā)生在輪齒部位，主要形式有齒面磨損、點(diǎn)蝕、輪齒折斷、齒面膠合及塑性變形等，齒輪的承載能力主要受接觸強(qiáng)度和彎曲強(qiáng)度的影響。傳統(tǒng)的