工程力學(xué)軟件方法--實(shí)體建模自上而下軸承座

1、1軸承座實(shí)體建模: 自上而下2軸承座說明v建立軸承座的半個(gè)對(duì)稱實(shí)體模型。v完成后以dd-block.db 文件名保存數(shù)據(jù)庫文件鏜孔鏜孔1.0R, 0.1875 深深基座基座6 x 3 x 1腹板腹板, 厚厚 0.15全部用英尺作單位全部用英尺作單位1.75四個(gè)四個(gè) 0.75D的孔的孔,孔中心距角點(diǎn)孔中心距角點(diǎn)0.75軸襯軸襯, 0.85R支架支架1.5R, 0.75 thick3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. 打開等視圖方位:Utility Menu PlotCtrls Pan, Zoom, Rotate v按ISO或用命令:/VIEW

2、,1,1,1,13. 創(chuàng)建軸承座的基礎(chǔ) :Main Menu Preprocessor -Modeling- Create -Volumes- Block By Dimensions .v輸入 X1 = 0, X2 = 3, Y1 = 0, Y2 = 1, Z1 = 0, Z2 = 3,然后按OK或用命令:/PREP7BLOCK,0,3,0,1,0,3 4軸承座3. 將工作平面移到位置 X=2.25, Y=1.25, Z=.75:Utility Menu WorkPlane Offset WP by Increments v設(shè)置 X,Y,Z Offsets = 2.25, 1.25, 0.75

3、v設(shè)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, 05軸承座4.創(chuàng)建直徑為0.75 英寸深度為-1.5 英寸的實(shí)體柱 :Main Menu Preprocessor -Modeling- Create -Volumes- Cylinder Solid Cylinder +v輸入Radius = 0.75/2v輸入Depth = -1.5, 然后按 OK或用命令:CYL4, , ,0.75/2, , , ,-1.55.將實(shí)體柱考貝到DZ=1.5的新位置 :Main Menu Pre

4、processor Copy Volumes +v拾取柱體 (體號(hào) 2),按 OKvDZ = 1.5, 按 OK或用命令:VGEN,2,2, , , , ,1.5, ,0命令命令! CYL4,XCENTER， YCENTER,RAD1，THETAl，RAD2，THETA2，DEPTH! VGEN，ITIME，NVl，NV2，NINC，DX，DY,DZ,KINC，NOELEM，IMOVE6軸承座6.從軸承座基礎(chǔ)中挖出兩個(gè)圓孔:Main Menu Preprocessor -Modeling- Operate -Booleans- Subtract Volumes +v拾取軸承座基礎(chǔ)的體 (體 1

5、), 按 OKv拾取兩個(gè)圓柱體 (體 2 和體3), 然后按 OK或用命令:VSBV, 1, ALL7軸承座7.在整體坐標(biāo)系中改變工作平面的相對(duì)位置:Utility Menu WorkPlane Align WP with Global Cartesian或用命令:vWPCSYS,-1,0 !命令命令WPCSYS,WN,KCN將工作平面定義于已知坐標(biāo)系統(tǒng)上 VPLOT8.創(chuàng)建套筒托架的基礎(chǔ):Main Menu Preprocessor -Modeling- Create -Volumes- Block By 2 Corners & Z +v輸入WP X = 0v輸入WP Y = 1v輸

6、入width = 1.5v輸入height = 1.75v輸入depth = 0.75, 然后按 OK或用命令:BLC4,0,1,1.5,1.75,0.759.將工作平面移到套筒托架的正面:Utility Menu WorkPlane Offset WP to Keypoints +v拾取正面左角頂部的關(guān)鍵點(diǎn),按 OK或用命令:KWPAVE, 168軸承座10. 創(chuàng)建套筒托架的拱:Main Menu Preprocessor -Modeling- Create -Volumes- Cylinder Partial Cylinder +v輸入WP X = 0v輸入WP Y = 0v輸入Rad-1

7、 = 0v輸入Theta-1 = 0v輸入Rad-2 = 1.5v輸入Theta-2 = 90v輸入Depth = -0.75, 然后按 OK或用命令:CYL4,0,0,0,0,1.5,90,-0.75命令命令CYL4,XCENTER， YCENTER,RAD1，THETAl， RAD2，THETA2，DEPTH9軸承座11. 通過套筒托架的孔創(chuàng)建軸承座的柱:Main Menu Preprocessor -Modeling- Create -Volumes- Cylinder Solid Cylinder +vWP X = 0vWP Y = 0vDepth = 1v深 = -0.1875,按

8、ApplyvWP X = 0vWP Y = 0vRad = 0.85vDepth = -2, 按 OK或用命令:CYL4,0,0,1, , , ,-0.1875CYL4,0,0,0.85, , , ,-2 10軸承座12. 挖掉兩個(gè)實(shí)體柱，形成軸承座和套筒的孔:Main Menu Preprocessor -Modeling- Operate -Booleans- Subtract Volumes +v拾取兩個(gè)形成套筒托架拱和基礎(chǔ)的體v按Applyv拾取軸承座柱v按Applyv拾取同樣的兩個(gè)基礎(chǔ)的體v按Applyv拾取通過孔的圓柱v按OK13. 合并相同的關(guān)鍵點(diǎn):Main Menu Prepr

9、ocessor Numbering Ctrls Merge Items v設(shè)置標(biāo)號(hào) “Keypoints”,然后按 OK或用命令:NUMMRG,KP11軸承座14. 創(chuàng)建腹板:14a. 在基礎(chǔ)正面頂邊的中間建立一個(gè)關(guān)鍵點(diǎn):Main Menu Preprocessor -Modeling- Create Keypoints KP between KPs +v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 OKvRATI = 0.5, 然后按OK或用命令:KBETW,7,8,0,RATI,0.5命令命令KBETW, KP1, KP2, KPNEW, Type, VALUE 12軸承座14b.創(chuàng)建三角

10、形面:Main Menu Preprocessor -Modeling- Create -Areas- Arbitrary Through KPs +v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=1.5v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=1.5v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)v按Ok或用命令:A,14,15,913軸承座14c.沿面的法線方向拉伸面:Main Menu Preprocessor -Modeling- Operate Extrude -Areas- Along Normal +v拾取在步驟14b中建立的三角形面,按 OKv輸入DIST = -0.15, 然后按OK或用命令:VOFFST,3,-0.1514軸承座15. 組合體:Main Menu Preprocessor -Modeling- Operate -Booleans- Glue Volumes +v拾取Pick All或用命令:VGLUE,ALL16. 打開體號(hào)的顯示開關(guān)并畫體:Utility Menu PlotCtrls Numbering v設(shè)置 Volume numbers選項(xiàng)為