建模练习轴承座

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Counterbore1.0R, 0.1875 deep Base6 x 3 x 1Web, 0.15 thick All dimensions in inches 1.75Four 0.75D holes,0.75 offsetfrom corner Bushing, 0.85R Bracket1.5R, 0.75 thick 1.按教师指定的工作目录，用“p-block”作为作业名， 进入 ANSYS2.打开等轴视图方位:按ISO或用命令:/VIEW,1,1,1,13.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 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, 0.75WPROT, 0, -90, 0 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, , , ,-1.56.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 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 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,-1,0VPLOT9.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:BLC4,0,1,1.5,1.75,0.7510.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 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 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, , , ,-0.1875CYL4,0,0,0.85, , , ,-2 Counterbore Through hole 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OK14.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 Arch and Base of Bushing Bracket 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 Keypoint1st Keypoint2st 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 Keypoint3rd Keypoint2nd Keypoint 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 16.组合体: Main Menu Preprocessor Modeling Operate Booleans Glue Volumes拾取Pick All或用命令:VGLUE,ALL17.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,1VPLOT18.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 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。 6.52.5 0.5 1.8 0.3 1.0R 1.4R 0.4R0.7R45oSpline through six control points CLCLCrank pin end Wrist pin end All dimensions in inches 45o 0.280.4 0.33 4.754.03.25 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:/PREP7PCIRC,1.4,1,0,180 PCIRC,1.4,1,45,1803.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,1APLOT 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,-0.3,0.3,1.2,1.8RECTNG,-1.8,-1.2,0,0.35.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 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 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,1,2,3,4AOVLAP,5,6 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, ,2.5,0.5K, ,3.25,0.4K, ,4.0,0.33K, ,4.75,0.289.激活整体柱坐标系: Utility Menu WorkPlane Change Active CS to Global Cylindrical或用命令:CSYS,1 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 1st kp 6th kp3rd kp 5th kp2nd kp 4th kp 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 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 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,1LPLOT13.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 14.放大连杆左边部分: Use the Zoom Model Icon in the Model Control Toolbar 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,36,40,0.25LFILLT,40,31,0.25LFILLT,30,39,0.25 LPLOT 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, 13AL, 17, 15, 19AL, 23, 21, 24APLOT 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,ALL18.选择Fit 使整个模型充满图形窗口: Utility Menu PlotCtrls Pan, Zoom, Rotate 按Fit19.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,0APLOT 20.激活整体直角坐标系: Utility Menu WorkPlane Change Active CS to Global Cartesian或用命令:CSYS,021.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 22.把所有的面加起来: Main Menu Preprocessor Modeling Operate Booleans Add Areas Pick All或用命令:AADD,ALL23.关闭工作平面: Utility Menu WorkPlane Display Working Plane或用命令:WPSTYLE Use Fit View Icon 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:SAVEFINISH/EXIT,NOSAVE