《建模练习轴承座》PPT课件

轴承座,实体建模: 自上而下,说明 建立轴承座的1/2对称实体模型。 以p-block.db 文件名保存数据库文件,6F. 实体建模：自上而下轴承座,1.按教师指定的工作目录，用“p-block”作为作业名， 进入 ANSYS 2.打开等轴视图方位: 按ISO 或用命令: /VIEW,1,1,1,1 3.创建轴承座的基础 : Main Menu Preprocessor Modeling Create Volumes Block By Dimensions 输入 X1 = 0, X2 = 3, Y1 = 0, Y2 = 1, Z1 = 0, Z2 = 3,然后按OK 或用命令: /PREP7 BLOCK,0,3,0,1,0,3,6F. 实体建模：自上而下轴承座,4.将工作平面移到 X=2.25, Y=1.25, Z=.75: Utility Menu WorkPlane Offset WP by Increments 设置 X,Y,Z Offsets = 2.25, 1.25, 0.75 设置XY, YZ, ZX Angles = 0, -90, 0, 然后按 OK 或用命令: WPOFF, 2.25, 1.25, 0.75 WPROT, 0, -90, 0,6F. 实体建模：自上而下轴承座,5.创建直径为0.75 英寸深度为-1.5 英寸的圆柱 : Main Menu Preprocessor Modeling Create Volumes Cylinder Solid Cylinder 输入Radius = 0.75/2 输入Depth = -1.5, 然后按 OK 或用命令: CYL4, , ,0.75/2, , , ,-1.5 6.将圆柱考贝到DZ=1.5的新位置 : Main Menu Preprocessor Modeling Copy Volumes + 拾取柱体 (体号 2),按 OK DZ = 1.5, 按 OK 或用命令: VGEN,2,2, , , , ,1.5, ,0,6F. 实体建模：自上而下轴承座,7.从轴承座基础中挖出两个圆孔: Main Menu Preprocessor Modeling Operate Booleans Subtract Volumes 拾取轴承座基础的体 (体 1), 按 OK 拾取两个圆柱体 (体 2 和体3), 然后按 OK 或用命令: VSBV, 1, ALL,6F. 实体建模：自上而下轴承座,8.在整体坐标系中改变工作平面的相对位置: Utility Menu WorkPlane Align WP with Global Cartesian 或用命令: WPCSYS,-1,0 VPLOT 9.创建套筒托架的基础: Main Menu Preprocessor Modeling Create Volumes Block By 2 Corners & Z WP X = 0 WP Y = 1 Width = 1.5 Height = 1.75 Depth = 0.75, then OK 或用命令:BLC4,0,1,1.5,1.75,0.75 10.将工作平面移到套筒托架的正面: Utility Menu WorkPlane Offset WP to Keypoints + 拾取正面左角顶部的关键点,按 OK 或用命令: KWPAVE, 16,6F. 实体建模：自上而下轴承座,11.创建套筒托架的拱: Main Menu Preprocessor Modeling Create Volumes Cylinder Partial Cylinder 输入WP X = 0 输入WP Y = 0 输入Rad-1 = 0 输入Theta-1 = 0 输入Rad-2 = 1.5 输入Theta-2 = 90 输入Depth = -0.75, 然后按 OK 或用命令: CYL4,0,0,0,0,1.5,90,-0.75,6F. 实体建模：自上而下轴承座,12.通过套筒托架的孔创建圆柱: Main Menu Preprocessor Modeling Create Volumes Cylinder Solid Cylinder WP X = 0 WP Y = 0 Radius = 1 Depth = -0.1875,然后按 Apply WP X = 0 WP Y = 0 Radius = 0.85 Depth = -2, 然后按 OK 或执行: CYL4,0,0,1, , , ,-0.1875 CYL4,0,0,0.85, , , ,-2,6F. 实体建模：自上而下轴承座,13.挖掉两个圆柱，形成轴承座和套筒的孔: Main Menu Preprocessor Modeling Operate Booleans Subtract Volumes 拾取两个形成套筒托架拱和基础的体 按Apply 拾取轴承座柱 按Apply 拾取同样的两个基础的体 按Apply 拾取通过孔的圆柱 按OK 14.合并相同的关键点: Main Menu Preprocessor Numbering Ctrls Merge Items 设置标号 “Keypoints”,然后按 OK 或用命令: NUMMRG,KP,6F. 实体建模：自上而下轴承座,15.创建腹板: 15a. 在基础正面顶边的中间建立一个关键点: Main Menu Preprocessor Modeling Create Keypoints KP between KPs 在基础上拾取两个位于正上方拐角处的关键点，按 OK RATI = 0.5, 然后按OK 或用命令: KBETW,7,8,0,RATI,0.5,1st Keypoint,6F. 实体建模：自上而下轴承座,1st Keypoint,2st Keypoint,15b.创建三角形面: Main Menu Preprocessor Modeling Create Areas Arbitrary Through KPs 在轴承座基础和套筒托架基础相交的位置，拾取第一个关键点 X=1.5 在拱表面底部和套筒托架基础相交的位置，拾取第二个关键点 X=1.5 拾取在14a步骤中建立的位于X=1.5, Y=1, Z=3的第三个关键点 按Ok 或用命令: A,14,15,9,1st Keypoint,3rd Keypoint,2nd Keypoint,6F. 实体建模：自上而下轴承座,15c.沿面的法线方向拉伸面: Main Menu Preprocessor Modeling Operate Extrude Areas Along Normal 拾取在步骤14b中建立的三角形面,按 OK 输入DIST = -0.15, 然后按OK 或用命令: VOFFST,3,-0.15,6F. 实体建模：自上而下轴承座,16.组合体: Main Menu Preprocessor Modeling Operate Booleans Glue Volumes 拾取Pick All 或用命令: VGLUE,ALL 17.打开体号的显示开关，画体: Utility Menu PlotCtrls Numbering 设置 Volume numbers选项为 on, 按 OK 或用命令: /PNUM,VOLU,1 VPLOT 18.保存数据库，退出 ANSYS: Pick the “SAVE_DB” button in the Toolbar Pick the “QUIT” button in the Toolbar 选择 “Quit - No Save!” 按OK 或用命令: FINISH /EXIT,ALL,6F. 实体建模：自上而下轴承座,连杆,实体建模: 由下而上,说明 用由下而上建模技术，建立连杆几何模型。,6G.实体建模-由下而上连杆,1.按教师指定的工作目录，用“c-rod” 作为作业名，进入ANSYS。 2.创建两个圆形面: Main Menu Preprocessor Modeling Create Areas Circle By Dimensions 输入RAD1 = 1.4 输入RAD2 = 1 输入THETA1 = 0 输入THETA2 = 180, 然后选择Apply 输入THETA1 = 45, 然后选择OK 或用命令: /PREP7 PCIRC,1.4,1,0,180 PCIRC,1.4,1,45,180 3.打开 面号: Utility Menu PlotCtrls Numbering . 设置面号为 “on”, 然后选择OK 或用命令: /PNUM,AREA,1 APLOT,6G.实体建模-由下而上连杆,4.创建两个矩形面: Main Menu Preprocessor Modeling Create Areas Rectangle By Dimensions 输入X1 = -0.3, X2 = 0.3, Y1 = 1.2, Y2 = 1.8, 然后选择Apply 输入X1 = -1.8, X2 = -1.2, Y1 = 0, Y2 = 0.3, 然后选择OK 或用命令: RECTNG,-0.3,0.3,1.2,1.8 RECTNG,-1.8,-1.2,0,0.3 5.平移工作面位置(X=6.5): Utility Menu WorkPlane Offset WP to XYZ Locations + 回车后在输入窗口输入 6.5 ， OK 或用命令: Or issue: WPAVE,6.5,6G.实体建模-由下而上连杆,6.再创建两个圆形面: Main Menu Preprocessor Modeling Create Areas Circle By Dimensions 输入RAD1 = 0.7 输入RAD2 = 0.4 输入THETA1 = 0 输入THETA2 = 180, 然后选择Apply 输入THETA2 = 135, 然后选择OK 或用命令: PCIRC,0.7,0.4,0,180 PCIRC,0.7,0.4,0,135,6G.实体建模-由下而上连杆,7.在每一组面上分别进行布尔操作: Main Menu Preprocessor Modeling Operate Booleans Overlap Areas 先选择左边的一组面, 然后选择Apply 再选择右边的一组面, 然后选择OK 或用命令: AOVLAP,1,2,3,4 AOVLAP,5,6,6G.实体建模-由下而上连杆,8.定义四个新的关键点: Main Menu Preprocessor Modeling Create Keypoints In Active CS 第一关键点, X=2.5, Y=0.5, 然后选择Apply 第二关键点, X=3.25, Y=0.4, 然后选择Apply 第三关键点, X=4, Y=0.33, 然后选择Apply 第四关键点, X=4.75, Y=0.28, 然后选择OK 或用命令: K, ,2.5,0.5 K, ,3.25,0.4 K, ,4.0,0.33 K, ,4.75,0.28 9.激活整体柱坐标系: Utility Menu WorkPlane Change Active CS to Global Cylindrical 或用命令: CSYS,1,6G.实体建模-由下而上连杆,10.创建一条线（由一系列关键点拟合一条样条曲线）: Main Menu Preprocessor Modeling Create Lines Splines With Options Spline thru KPs 顺序拾取如图形窗口所示的六个关键点, 然后选择OK,6G.实体建模-由下而上连杆,10. (续): 输入XV1 = 1 (总体柱坐标系，关键点 1 处的半径) YV1 = 135 (总体柱坐标系，关键点 1 处的角度) XV6 = 1 (总体柱坐标系，关键点 6 处的半径) YV6 = 45 (总体柱坐标系，关键点 6 处的角度) 按OK 或用命令: BSPLIN,5,6,7,21,24,22,1,135,1,45,6G.实体建模-由下而上连杆,11.通过关键点1和18创建一条直线 : Main Menu Preprocessor Modeling Create Lines Lines Straight Line 拾取图形窗口所示的两个关键点, 然后选择OK 或用命令: LSTR, 1, 18,1st kp,2nd kp,6G.实体建模-由下而上连杆,12.打开线号，显示线: Utility Menu PlotCtrls Numbering . 设置 Line numbers为 “on”, 然后选择OK Utility Menu Plot Lines 或用命令: /PNUM,LINE,1 LPLOT 13.以6号、1号、7号、25号线为边界创建一个新面: Main Menu Preprocessor Modeling Create Areas Arbitrary By Lines 拾取四条线 (6, 1, 7, 和 25), 然后选择OK 或用命令: AL, 6, 1, 7, 25,6G.实体建模-由下而上连杆,14.放大连杆左边部分: Use the Zoom Model Icon in the Model Control Toolbar,6G.实体建模-由下而上连杆,15.创建线与线的倒角: Main Menu Preprocessor Modeling Create Lines Line Fillet 拾取线 36 和 40, 然后选择Apply 输入RAD = .25, 然后选择Apply 拾取线 40和 31, 然后选择Apply 按Apply 拾取线 30和 39, 然后选择OK 按OK Utility Menu Plot Lines 或用命令: LFILLT,36,40,0.25 LFILLT,40,31,0.25 LFILLT,30,39,0.25 LPLOT,6G.实体建模-由下而上连杆,16.以倒角线为边界，创建新面: Main Menu Preprocessor Modeling Create Areas Arbitrary By Lines 拾取线 12, 10, 和 13, 然后选择Apply 拾取线 17, 15, 和19, 然后选择Apply 拾取线 23, 21, 和24, 然后选择OK Utility Menu Plot Areas 或用命令: AL, 12, 10, 13 AL, 17, 15, 19 AL, 23, 21, 24 APLOT,6G.实体建模-由下而上连杆,17.把所有的面加起来: Main Menu Preprocessor Modeling Operate Booleans Add Areas 拾取Pick All 或用命令: AADD,ALL 18.选择Fit 使整个模型充满图形窗口: Utility Menu PlotCtrls Pan, Zoom, Rotate 按Fit 19.关闭线号和面号: Utility Menu PlotCtrls Numbering . 设置线号和面号为“ off ”, 然后选择OK Utility Menu Plot Areas 或用命令: /PNUM,LINE,0 /PNUM,AREA,0 APLOT,6G.实体建模-由下而上连杆,20.激活整体直角坐标系: Utility Menu WorkPlane Change Active CS to Global Cartesian 或用命令: CSYS,0 21.以X-Z 平面 (在 Y 方向) 为对称面，对面作镜面反射: Main Menu Preprocessor Modeling Reflect Areas Pick All Select X-Z plane, then OK 或用命令: ARSYM,Y,13,6G.实体建模-由下而上连杆,22.把所有的面加起来: Main Menu Preprocessor Modeling Operate Booleans Add Areas Pick All 或用命令: AADD,ALL 23.关闭工作平面: Utility Menu WorkPlane Display Working Plane 或用命令: WPSTYLE,Use Fit View Icon,6G.实体建模-由下而上连杆,24.存储数据库，退出 ANSYS: 在工具条中拾取 “SAVE_DB” 在工具条中拾取 “QUIT” 选择 “Quit - No Save!” 按OK 或用命令: SAVE FINISH /EXIT,NOSAVE,6G.实体建模-由下而上连杆,