【正文】 件下，可以計算出機械產(chǎn)品各處的位移、應(yīng)力和應(yīng)變?；蛘邔驓た闯墒且缓喼Я?，校核某些特定斷面的最大應(yīng)力值。 同樣，設(shè)計驅(qū)動橋 殼時，作為車輛的主要承載構(gòu)件之一，驅(qū)動橋殼形狀和受力都很復(fù)雜，因此，要精確計算出驅(qū)動橋殼各狀態(tài)下各處的應(yīng)力是很困難的 [3， 4]。 (2) 結(jié)構(gòu)動力學(xué)分析 ： 可分為兩類問題。 1） 有限元法 有限元法由于能夠解決結(jié)構(gòu)形狀和邊界條件都非常任意的力學(xué)問題，因而在實際中得到廣泛應(yīng)用，成為一種可靠的新的數(shù)值計算方法，并取得許多實際效益。這樣，在圖紙最終完成后，就可以將設(shè)計正式投入生產(chǎn)，對實現(xiàn)最優(yōu)化設(shè)計、提高設(shè)計效率、縮短開發(fā)周期、節(jié)約成本具有重要意義。 關(guān)鍵詞： 有限元法， UG， ANSYS Workbench， 驅(qū)動橋殼，靜力分析，模態(tài)分析 湖 北 汽 車 工 業(yè) 學(xué) 院 畢 業(yè) 論 文 III Abstract As the mainly carrying and passing ponents of the vehicle, the automobile drive axle housing supports the weight of vehicle, and transfer the weight to the wheel. Through the drive axle housing, the driving force, braking force and lateral force act on the wheel transfer to the suspension system, frame and carriage. This article studies based on light truck driver axle of QX1060, discusses in detail from the UG software parametric modeling, establish of ANSYS FEM model, and the boundary conditions imposed, etc. And through drive axle housing of the four main conditions of static analysis and modal analysis, it can access the stress distribution and deformation in the corresponding status of drive axle directly. Thus, under the premise of ensuring the strength of drive axle housing, stiffness and dynamic performance requirements, the analysis can raise feasible measures and remendations in drive axle housing design. Keywords： Finite element method， UG， ANSYS Workbench， Drive axle housing，Static analysis， Modal analysis 湖 北 汽 車 工 業(yè) 學(xué) 院 畢 業(yè) 論 文 IV 目錄 摘 要 .......................................................................................................................................... II Abstract ............................................................................................................................... III 1 緒論 ...................................................................................................................................... 1 課題來源及意義 ..................................................................................................... 1 國內(nèi)外研究現(xiàn)狀 ..................................................................................................... 1 ANSYS 軟件介紹 ...................................................................................................... 4 概述 .............................................................................................................. 5 ANSYS 的主要模塊及功能 .......................................................................... 5 ANSYS 的主要技術(shù)特點 .............................................................................. 6 ANSYS Workbench 簡介 .............................................................................. 7 CAD/CAE 在汽車設(shè)計中的應(yīng)用 ............................................................................. 8 課題研究內(nèi)容 ......................................................................................................... 8 2 驅(qū)動橋殼的 CAD 建模 ...................................................................................................... 10 驅(qū)動橋殼的結(jié)構(gòu)特點 ........................................................................................... 10 UG 軟件介紹及參數(shù)化建模思想 ......................................................................... 10 UG 軟件介紹 ............................................................................................... 10 UG 參數(shù)化建模思想和一般模塊介紹 ..................................................... 11 驅(qū)動橋殼的建模及簡化處理 .............................................................................. 14 驅(qū)動橋殼三維的建模 ............................................................................... 14 驅(qū)動橋殼的模型簡化處理 ....................................................................... 16 3 驅(qū)動橋殼靜力分析 .......................................................................................................... 18 靜力分析概述 ....................................................................................................... 18 驅(qū)動橋殼靜力分析典型工況 .............................................................................. 18 建立驅(qū)動橋 殼有限元模型 .................................................................................. 20 幾何模型的導(dǎo)入 ....................................................................................... 20 湖 北 汽 車 工 業(yè) 學(xué) 院 畢 業(yè) 論 文 V 生成橋殼有限元模型 ............................................................................... 21 驅(qū)動橋殼各工況靜力分析 .................................................................................. 23 沖擊載荷工況 ............................................................................................ 23 最大驅(qū)動力工況 ....................................................................................... 25 最大制動力工況 ....................................................................................... 28 最大側(cè)向力工況 ....................................................................................... 30 4 驅(qū)動橋殼的模態(tài)分析 ...................................................................................................... 34 模態(tài)分析理論 ....................................................................................................... 34 建立模態(tài)分析有限元模型 .................................................................................. 35 驅(qū)動橋殼模態(tài)分析 ............................................................................................... 36 自由模態(tài)分析 ............................................................................................ 37 約束模態(tài)分析 ............................................................................................ 41 模態(tài)分析總結(jié) ............................................................................................ 47 5 課題總結(jié)與展望 ............................................................................................................... 48 課題總結(jié) ..............................................