建模练习轴承座ppt课件.ppt
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 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:/PREP7BLOCK,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,2.25,1.25,0.75WPROT,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,-1.56.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 OKDZ=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,-1,0VPLOT9.创建套筒托架的基础:Main Menu Preprocessor Modeling Create Volumes Block By 2 Corners&ZWP X=0WP Y=1Width=1.5Height=1.75Depth=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,16,6F.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 CylinderWP X=0WP Y=0Radius=1Depth=-0.1875,然后按 ApplyWP X=0WP Y=0Radius=0.85Depth=-2,然后按 OK或执行:CYL4,0,0,1,-0.1875CYL4,0,0,0.85,-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,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 OKRATI=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,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 ToolbarPick 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:/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,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,-0.3,0.3,1.2,1.8RECTNG,-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,6.5,6G.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,1,2,3,4AOVLAP,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,2.5,0.5K,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,1,6G.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OKUtility 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,6,1,7,25,6G.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OKUtility Menu Plot Lines或用命令:LFILLT,36,40,0.25LFILLT,40,31,0.25LFILLT,30,39,0.25LPLOT,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OKUtility Menu Plot Areas或用命令:AL,12,10,13AL,17,15,19AL,23,21,24APLOT,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,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OKUtility Menu Plot Areas或用命令:/PNUM,LINE,0/PNUM,AREA,0APLOT,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,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 AreasPick AllSelect 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 AreasPick 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,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:SAVEFINISH/EXIT,NOSAVE,6G.实体建模-由下而上连杆,
