軸承座專題6F實(shí)體建模:自上而下6F.實(shí)體建模：自上而下

軸承座說明建立軸承座的1/2對稱實(shí)體模型。以p-block.db文件名保存數(shù)據(jù)庫文件Counterbore1.0R,0.1875deepBase6x3x1Web,0.15thickAlldimensionsininches1.75Four0.75Dholes,0.75offsetfromcornerBushing,0.85RBracket1.5R,0.75thickNovember3,20036F.實(shí)體建模：自上而下

軸承座1. 按教師指定的工作目錄，用“p-block”作為作業(yè)名，進(jìn)入

ANSYS2. 打開等軸視圖方位:按[ISO]或用命令:/VIEW,1,1,1,13. 創(chuàng)建軸承座的基礎(chǔ)

:MainMenu>Preprocessor>Modeling>Create>Volumes>Block>ByDimensions輸入X1=0,X2=3,Y1=0,Y2=1,Z1=0,Z2=3,然后按[OK]或用命令:/PREP7BLOCK,0,3,0,1,0,3November3,20036F.實(shí)體建模：自上而下

軸承座4.將工作平面移到

X=2.25,Y=1.25,Z=.75:UtilityMenu>WorkPlane>OffsetWPbyIncrements…設(shè)置X,Y,ZOffsets=2.25,1.25,0.75設(shè)置XY,YZ,ZXAngles=0,-90,0,然后按[OK]或用命令:WPOFF,2.25,1.25,0.75WPROT,0,-90,0November3,20036F.實(shí)體建模：自上而下

軸承座5. 創(chuàng)建直徑為0.75英寸深度為-1.5英寸的圓柱:MainMenu>Preprocessor>Modeling>Create>Volumes>Cylinder>SolidCylinder輸入Radius=0.75/2輸入Depth=-1.5,然后按[OK]或用命令:CYL4,,,0.75/2,,,,-1.56. 將圓柱考貝到DZ=1.5的新位置:MainMenu>Preprocessor>Modeling>Copy>Volumes+拾取柱體(體號2),按[OK]DZ=1.5,按[OK]或用命令:VGEN,2,2,,,,,1.5,,0November3,20036F.實(shí)體建模：自上而下

軸承座7. 從軸承座基礎(chǔ)中挖出兩個(gè)圓孔:MainMenu>Preprocessor>Modeling>Operate>Booleans>Subtract>Volumes拾取軸承座基礎(chǔ)的體(體1),按[OK]拾取兩個(gè)圓柱體(體2和體3),然后按[OK]或用命令:VSBV,1,ALLNovember3,20036F.實(shí)體建模：自上而下

軸承座12.通過套筒托架的孔創(chuàng)建圓柱:MainMenu>Preprocessor>Modeling>Create>Volumes>Cylinder>SolidCylinderWPX=0WPY=0Radius=1Depth=-0.1875,然后按[Apply]WPX=0WPY=0Radius=0.85Depth=-2,然后按[OK]或執(zhí)行:CYL4,0,0,1,,,,-0.1875CYL4,0,0,0.85,,,,-2CounterboreThroughholeNovember3,20036F.實(shí)體建模：自上而下

軸承座13. 挖掉兩個(gè)圓柱，形成軸承座和套筒的孔:MainMenu>Preprocessor>Modeling>Operate>Booleans>Subtract>Volumes拾取兩個(gè)形成套筒托架拱和基礎(chǔ)的體按[Apply]拾取軸承座柱按[Apply]拾取同樣的兩個(gè)基礎(chǔ)的體按[Apply]拾取通過孔的圓柱按[OK14. 合并相同的關(guān)鍵點(diǎn):MainMenu>Preprocessor>NumberingCtrls>MergeItems設(shè)置標(biāo)號“Keypoints”,然后按[OK]或用命令:NUMMRG,KPArchandBaseofBushingBracketNovember3,20036F.實(shí)體建模：自上而下

軸承座15. 創(chuàng)建腹板:15a.在基礎(chǔ)正面頂邊的中間建立一個(gè)關(guān)鍵點(diǎn):MainMenu>Preprocessor>Modeling>Create>Keypoints>KPbetweenKPs在基礎(chǔ)上拾取兩個(gè)位于正上方拐角處的關(guān)鍵點(diǎn)，按[OK]RATI=0.5,然后按[OK]或用命令:KBETW,7,8,0,RATI,0.51stKeypoint2ndKeypointNovember3,20036F.實(shí)體建模：自上而下

軸承座15b.創(chuàng)建三角形面:MainMenu>Preprocessor>Modeling>Create>Areas>Arbitrary>ThroughKPs在軸承座基礎(chǔ)和套筒托架基礎(chǔ)相交的位置，拾取第一個(gè)關(guān)鍵點(diǎn)

X=1.5在拱表面底部和套筒托架基礎(chǔ)相交的位置，拾取第二個(gè)關(guān)鍵點(diǎn)

X=1.5拾取在14a步驟中建立的位于X=1.5,Y=1,Z=3的第三個(gè)關(guān)鍵點(diǎn)按[Ok]或用命令:A,14,15,91stKeypoint3rdKeypoint2ndKeypointNovember3,20036F.實(shí)體建模：自上而下

軸承座15c.沿面的法線方向拉伸面:MainMenu>Preprocessor>Modeling>Operate>Extrude>AreasAlongNormal拾取在步驟14b中建立的三角形面,按[OK]輸入DIST=-0.15,然后按[OK]或用命令:VOFFST,3,-0.15November3,20036F.實(shí)體建模：自上而下

軸承座16. 組合體:

MainMenu>Preprocessor>Modeling>Operate>Booleans>Glue>Volumes拾取[PickAll]或用命令:VGLUE,ALL17. 打開體號的顯示開關(guān)，畫體:UtilityMenu>PlotCtrls>Numbering…設(shè)置

Volumenumbers選項(xiàng)為on,按[OK]或用命令:/PNUM,VOLU,1VPLOT18. 保存數(shù)據(jù)庫，退出

ANSYS:Pickthe“SAVE_DB”buttonintheToolbarPickthe“QUIT”buttonintheToolbar選擇“Quit-NoSave!”按[OK]

或用命令:FINISH/EXIT,ALLNovember3,2003連桿練習(xí)6G實(shí)體建模:由下而上6G.實(shí)體建模-由下而上

連桿說明用由下而上建模技術(shù)，建立連桿幾何模型。6.52.50.51.80.31.0R1.4R0.4R0.7R45oSplinethroughsixcontrolpointsCLCLCrankpinendWristpinendAlldimensionsininches45o0.280.40.334.754.03.25November3,20036G.實(shí)體建模-由下而上

連桿1. 按教師指定的工作目錄，用“c-rod”作為作業(yè)名，進(jìn)入ANSYS。2. 創(chuàng)建兩個(gè)圓形面:MainMenu>Preprocessor>Modeling>Create>Areas>Circle>ByDimensions輸入RAD1=1.4輸入RAD2=1輸入THETA1=0輸入THETA2=180,然后選擇[Apply]輸入THETA1=45,然后選擇[OK]或用命令:/PREP7PCIRC,1.4,1,0,180PCIRC,1.4,1,45,1803. 打開面號:UtilityMenu>PlotCtrls>Numbering...設(shè)置面號為“on”,然后選擇[OK]或用命令:/PNUM,AREA,1APLOTNovember3,20036G.實(shí)體建模-由下而上

連桿4. 創(chuàng)建兩個(gè)矩形面:MainMenu>Preprocessor>Modeling>Create>Areas>Rectangle>ByDimensions輸入X1=-0.3,X2=0.3,Y1=1.2,Y2=1.8,然后選擇[Apply]輸入X1=-1.8,X2=-1.2,Y1=0,Y2=0.3,然后選擇[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):UtilityMenu>WorkPlane>OffsetWPto>XYZLocations+回車后在輸入窗口輸入6.5，

[OK]或用命令:Orissue:WPAVE,6.5November3,20036G.實(shí)體建模-由下而上

連桿6.再創(chuàng)建兩個(gè)圓形面:MainMenu>Preprocessor>Modeling>Create>Areas>Circle>ByDimensions輸入RAD1=0.7輸入RAD2=0.4輸入THETA1=0輸入THETA2=180,然后選擇[Apply]輸入THETA2=135,然后選擇[OK]或用命令:PCIRC,0.7,0.4,0,180PCIRC,0.7,0.4,0,135November3,20036G.實(shí)體建模-由下而上

連桿7. 在每一組面上分別進(jìn)行布爾操作:MainMenu>Preprocessor>Modeling>Operate>Booleans>Overlap>Areas先選擇左邊的一組面,然后選擇[Apply]再選擇右邊的一組面,然后選擇[OK]或用命令:AOVLAP,1,2,3,4AOVLAP,5,6November3,20036G.實(shí)體建模-由下而上

連桿8. 定義四個(gè)新的關(guān)鍵點(diǎn):MainMenu>Preprocessor>Modeling>Create>Keypoints>InActiveCS第一關(guān)鍵點(diǎn),X=2.5,Y=0.5,然后選擇[Apply]第二關(guān)鍵點(diǎn),X=3.25,Y=0.4,然后選擇[Apply]第三關(guān)鍵點(diǎn),X=4,Y=0.33,然后選擇[Apply]第四關(guān)鍵點(diǎn),X=4.75,Y=0.28,然后選擇[OK]或用命令:K,,2.5,0.5K,,3.25,0.4K,,4.0,0.33K,,4.75,0.289. 激活整體柱坐標(biāo)系:UtilityMenu>WorkPlane>ChangeActiveCSto>GlobalCylindrical或用命令:CSYS,1November3,20036G.實(shí)體建模-由下而上

連桿10. 創(chuàng)建一條線（由一系列關(guān)鍵點(diǎn)擬合一條樣條曲線）:MainMenu>Preprocessor>Modeling>Create>Lines>Splines>WithOptions>SplinethruKPs順序拾取如圖形窗口所示的六個(gè)關(guān)鍵點(diǎn),然后選擇[OK]1stkp6thkp3rdkp5thkp2ndkp4thkpNovember3,20036G.實(shí)體建模-由下而上

連桿10. (續(xù)):輸入XV1=1(總體柱坐標(biāo)系，關(guān)鍵點(diǎn)1處的半徑)YV1=135(總體柱坐標(biāo)系，關(guān)鍵點(diǎn)1處的角度)XV6=1(總體柱坐標(biāo)系，關(guān)鍵點(diǎn)6處的半徑)YV6=45(總體柱坐標(biāo)系，關(guān)鍵點(diǎn)6處的角度)按[OK]或用命令:BSPLIN,5,6,7,21,24,22,1,135,,1,45November3,20036G.實(shí)體建模-由下而上

連桿11. 通過關(guān)鍵點(diǎn)1和18創(chuàng)建一條直線:MainMenu>Preprocessor>Modeling>Create>Lines>Lines>StraightLine拾取圖形窗口所示的兩個(gè)關(guān)鍵點(diǎn),然后選擇[OK]或用命令:LSTR,1,181stkp2ndkpNovember3,20036G.實(shí)體建模-由下而上

連桿12. 打開線號，顯示線:UtilityMenu>PlotCtrls>Numbering...設(shè)置Linenumbers為“on”,然后選擇[OK]UtilityMenu>Plot>Lines或用命令:/PNUM,LINE,1LPLOT13. 以6號、1號、7號、25號線為邊界創(chuàng)建一個(gè)新面:MainMenu>Preprocessor>Modeling>Create>Areas>Arbitrary>ByLines拾取四條線(6,1,7,和25),然后選擇[OK]或用命令:AL,6,1,7,25November3,20036G.實(shí)體建模-由下而上

連桿14. 放大連桿左邊部分:UsetheZoomModelIconintheModelControlToolbarNovember3,20036G.實(shí)體建模-由下而上

連桿15. 創(chuàng)建線與線的倒角:MainMenu>Preprocessor>Modeling>Create>Lines>LineFillet拾取線36和40,然后選擇[Apply]輸入RAD=.25,然后選擇[Apply]拾取線40和31,然后選擇[Apply]按[Apply]拾取線30和39,然后選擇[OK]按[OK]UtilityMenu>Plot>Lines或用命令:LFILLT,36,40,0.25LFILLT,40,31,0.25LFILLT,30,39,0.25LPLOTNovember3,20036G.實(shí)體建模-由下而上

連桿16. 以倒角線為邊界，創(chuàng)建新面:MainMenu>Preprocessor>Modeling>Create>Areas>Arbitrary>ByLines拾取線12,10,和13,然后選擇[Apply]拾取線17,15,和19,然后選擇[Apply]拾取線23,21,和24,然后選擇[OK]UtilityMenu>Plot>Areas或用命令:AL,12,10,13AL,17,15,19AL,23,21,24APLOTNovember3,20036G.實(shí)體建模-由下而上

連桿17. 把所有的面加起來:MainMenu>Preprocessor>Modeling>Operate>Booleans>Add>Areas拾取[PickAll]或用命令:AADD,ALL18. 選擇Fit使整個(gè)模型充滿圖形窗口:UtilityMenu>PlotCtrls>Pan,Zoom,Rotate…按[Fit]19. 關(guān)閉線號和面號:UtilityMenu>PlotCtrls>Numbering...設(shè)置線號和面號為“off”,然后選擇[OK]UtilityMenu>Plot>Areas或用命令:/PNUM,LINE,0/PNUM,AREA,0APLOTNovember3,20036G.實(shí)體建模-由下而上

連桿20. 激活整體直角坐標(biāo)系:UtilityMenu>WorkPlane>ChangeActiveCSto>GlobalCartesian或用命令:CSYS,021. 以X-Z平面(在Y方向)為對稱面，對面作鏡面反射:MainMenu>Preprocessor>Modeling>Reflect>Areas[PickAll]SelectX-Zplane,then[OK]或用命令:ARSYM,Y,13November3,20036G.實(shí)體建模-由下而上

連桿22. 把所有的面加起來:MainMenu>Preprocessor>Modeling>Operate>Booleans>Add>Areas[PickAll]或用命令:AADD,ALL23. 關(guān)閉工作平面:UtilityMenu>WorkPlane>DisplayWorkingPlane或用命令:WPSTYLEUseFitViewIconNovember3,20036G.實(shí)體建模-由下而上

連桿24. 存儲數(shù)據(jù)庫，退出ANSYS:在工具條中拾取“SAVE_DB”在工具條中拾取“QUIT”選擇“Quit-NoSave!”按[OK]或用命令:SAVEFINISH/EXIT,NOSAVENovember3,2003連桿練習(xí)6H實(shí)體建模:輸入/修正

6H.實(shí)體建模:輸入/修正

連桿說明對一個(gè)連桿的CAD模型進(jìn)行分析。這個(gè)幾何模型并不包括分析所需的所有特征。需要添加倒角、孔并創(chuàng)建1/2對稱模型來簡化分析。November3,20036H.實(shí)體建模:輸入/修正

連桿1. 按教師指定的工作目錄，用“c-rod-fix”作為作業(yè)名，進(jìn)入ANSYS。2. 讀入幾何模型“c-rod.igs”，并設(shè)置“Nodefeaturing”選項(xiàng)：UtilityMenu>File>Import>IGES…設(shè)置“Nodefeaturing”,然后選擇[OK]選擇文件“c-rod.igs”,然后選擇[OK]或用命令:/AUX15IGESIN,'c-rod','igs',''VPLOT3.創(chuàng)建第一個(gè)孔：3a.在孔中心創(chuàng)建關(guān)鍵點(diǎn)

MainMenu>Preprocessor>Modeling>Create>Keypoints>KPatcenter>3keypoints拾取三個(gè)關(guān)鍵點(diǎn)，按[OK]或用命令:: /PREP7KCENTER,KP,17,29,31,03b.平移工作平面到新的關(guān)鍵點(diǎn)：UtilityMenu>Workplane>OffsetWPto>Keypoints+在孔中心拾取新的關(guān)鍵點(diǎn)或用命令:KWPAVE,11stkp3rdkp2ndkpNovember3,20036H.實(shí)體建模:輸入/修正

連桿3c. 創(chuàng)建一個(gè)圓柱體，為生成孔作準(zhǔn)備:MainMenu>Preprocessor>Modeling>Create>Volumes>Cylinder>SolidCylinder輸入Radius=1,Depth=-1，按[OK]或用命令:CYL4,,,1,,,,-13d. 從連桿中減去圓柱體:MainMenu>Preprocessor>Operate>Booleans>Subtract>Volumes+拾取連桿，按[OK]拾取圓柱體，按[OK]UtilityMenu>Plot>Volumes或用命令:VSBV,1,2VPLOTNovember3,20036H.實(shí)體建模:輸入/修正

連桿4.創(chuàng)建第二個(gè)孔:4a.在孔中心創(chuàng)建關(guān)鍵點(diǎn):MainMenu>Preprocessor>Modeling>Create>Keypoints>KPatcenter>3keypoints拾取三個(gè)關(guān)鍵點(diǎn)，按[OK]或用命令:KCENTER,KP,19,23,27,04b.平移工作平面到新的關(guān)鍵點(diǎn):UtilityMenu>Workplane>OffsetWPto>Keypoints+在孔中心拾取新的關(guān)鍵點(diǎn)或用命令:KWPAVE,184c. 創(chuàng)建圓柱體，為生成孔作準(zhǔn)備:MainMenu>Preprocessor>Modeling>Create>Volumes>Cylinder>SolidCylinder輸入Radius=0.4,Depth=-1，按[OK]或用命令:CYL4,,,.4,,,,-14d. 從連桿中減去圓柱體:MainMenu>Preprocessor>Modeling>Operate>Booleans>Subtract>Volumes拾取連桿，按[OK]拾取圓柱體，按[OK]UtilityMenu>Plot>Volumes或用命令:VSBV,3,1VPLOT1stkp2ndkp3rdkpNovember3,20036H.實(shí)體建模:輸入/修正

連桿5.將體分解為對稱的模型:5a. 旋轉(zhuǎn)工作平面:UtilityMenu>Workplane>OffsetWPbyincrements…繞X軸旋轉(zhuǎn)90度,然后選擇[OK]或用命令:WPRO,,90,5b.用工作平面切分體:MainMenu>Preprocessor>Modeling>Operate>Booleans>Divide>VolubyWrkPlane選擇連桿,然后按[OK]UtilityMenu>Plot>Volumes或用命令:VSBW,2VPLOT5c.刪除連桿的下半部分:MainMenu>Preprocessor>Modeling>Delete>VolumeandBelow選擇體的下部,然后按[OK]UtilityMenu>Plot>Volumes或用命令:VDELE,3,,,1VPLOTNove