【正文】 安徽工程大學機電學院本科畢業(yè)設計（論文）專 業(yè)： 機械設計制造及其自動化 題 目： 汽車車門拉延模具設計 與成形模擬 作 者 姓 名 ： 導 師 及 職 稱 ： 導師所在單位： 機械與汽車工程學院 汽車車門拉延模具設計與成形模擬摘 要本課題把汽車覆蓋件車門內(nèi)板作為研究的對象，以常見的板料成形分析軟件Dynaform 作為工具對拉延成形工藝參數(shù)進行研究。本課題設計的意義是拉延成形 CAE分析可以提前預測沖壓產(chǎn)品的缺陷，幫助工程技術人員對拉延成形工藝進行優(yōu)化，以減少反復試模修模的次數(shù)，縮短產(chǎn)品的設計和生產(chǎn)周期。完成的主要工作有通過 UG對汽車車門進行拉延模具的設計，再根據(jù)零件的結構特點制定合理的成形工序，采用Dynaform 軟件對拉深成形過程進行數(shù)值模擬，查看模擬結果中的板料流入量，根據(jù)經(jīng)驗和反復對試驗結果的驗證與分析后，重新設定相關系數(shù)，找到最合適的參數(shù)設置。通過 Dynaform 軟件的模擬仿真結果的分析，板料的厚度，拉延筋的設計，壓邊力的大小，成形的尺寸設計，沖壓的次數(shù)與力度等對板料的成形結果都有很大影響，要想獲得最理想的仿真結果，只有通過經(jīng)驗和不斷地實驗才能找出最佳方案。本畢業(yè)設計的有用結論主要是用 Dynaform 軟件可以模擬板料成形的真實過程，從而避免生產(chǎn)過程耗費很大的人力物力財力去試驗，很大程度上節(jié)約成本。CAE 數(shù)值分析仿真結果也十分準確，在中國仿真率達到 97%，在國外達到 100%，它的應用將越來越廣泛。關鍵詞：拉延成形。CAE 分析；Dynaform 軟件Mold design and Forming Simulation of the Drawing of Car DoorAbstractThis topic do research on forming process parameters with the car door inner panel as the object of study, and mon sheet metal forming analysis software Dynaform as a tool studied. Design of this project is the significance of drawing forming CAE analysis can predict in advance stamping product defects, helping engineers and technicians on the drawing forming process optimization to reduce repair mode repeatedly tryout times, shorten product design and production cycle. The main work pleted through the car door for UG drawing die design, according to the structural characteristics of the part forming process to develop a reasonable, using software Dynaform deep drawing process is simulated view simulation results sheet inflows based on experience and repeated validation of the test results and analysis, reset the correlation coefficient, to find the most suitable parameter settings.Through the analysis of Dynaform software simulation results, we can conclude that sheet thickness, drawing beads design, BHF size, the size of the design forming, stamping the number and intensity of such results has a significant impact on the sheet metal forming. Only through experience and constantly experiments can we find out the best solution and get the best simulation results.The main useful conclusions of graduation design is that the real process of sheet metal forming can be simulated by Dynaform software, in order to avoid laborintensive production processes and material resources to test and to save the cost largely. CAE Numerical analysis and simulation results are also very accurate simulation in China reached 97% to 100% in a foreign country, its application will be more widelyKeywords: drawing forming。 CAE analysis。 Dynaform SoftwareIII / 70目 錄引 言 ....................................................................1第 1 章 緒論 ...............................................................2 沖壓數(shù)值模擬技術的研究現(xiàn)狀及發(fā)展趨勢 .................................2 沖壓模具 CAE 數(shù)值模擬分析的目的 ......................................2 AUTOFORM軟件簡介 ......................................................3 課題研究的主要內(nèi)容 ..................................................4 課題的研究方案 ......................................................6 本章小結： ..........................................................6第 2 章 汽車覆蓋件拉延成形理論 .............................................7 汽車覆蓋件拉延成形有限元仿真理論概述 ................................7 汽車覆蓋件拉延成形數(shù)值模擬有限元理論 ................................8 幾何非線性 .......................................................8 Barlat 屈服準則 ..................................................9 汽車覆蓋件沖壓成形單元模型 ......................................11 有限元控制方程的求解 ............................................16 本章小結 ...........................................................18第 3 章 基于 DYNAFORM 模面前處理與參數(shù)設置 .................................19 模面前處理 .........................................................19 Dynaform 初步處理 ...............................................19 創(chuàng)建 DIE.........................................................19 創(chuàng)建 PUNCH 零件層 ................................................22 創(chuàng)建 BINDER 零件層 ...............................................23 創(chuàng)建 BLANK 零件層 ................................................25 板料成形設置 ....................................................26 凸凹模、壓邊圈定位 ..............................................28 參數(shù)設置 ...........................................................29 設置工序、控制參數(shù) ..............................................29 動畫預覽 ........................................................30 Dynaform 求解器計算 ............................................30 本章小節(jié) ..........................................................32第 4 章 CAE 分析數(shù)值模擬仿真結果 ...........................................33 讀入結果文件到 ETA/POST.............................................33 繪制變形過程 .......................................................33 成型極限圖 FLD......................................................34 厚度變化情況 .......................................................36 錄制 AVI 成形過程 ...................................................37 本章小結 ...........................................................38第 5 章 拉延模結構設計 ....................................................39 拉延模工作部分計算 .................................................39 凸模圓角半徑 ....................................................39 凹模圓角半徑 ....................................................39 凹模工作深度計算 ................................................40 凹凸模間隙 ......................................................40 凹凸模橫向尺寸及公差 ............................................41 其他零部件的設計與選用 ..............................................42 拉延模比和高度的計算 ...............................................42 模具主要零部件設計 .................................................42 凸模部分： ......................................................42 凹模部分： ......................................................43 壓邊圈部分 ......................................................44 裝配部分 ........................................................44 本章小結 ........