1、 埃菲爾鐵塔簡(jiǎn)化結(jié)構(gòu)分析埃菲爾鐵塔從1887年起建，分為三樓，總高320米，分別在離地面57.6米、115.7米和276.1米處，其中一、二樓設(shè)有餐廳，第三樓建有觀景臺(tái)，從塔座到塔頂共有1711級(jí)階梯，共用去鋼鐵7000噸，12000個(gè)金屬部件，259萬(wàn)只鉚釘，極為壯觀。塔身主要受的是風(fēng)載其高處受的是238km/h的風(fēng)載,低處受的是169km/h的風(fēng)載。 將其簡(jiǎn)化為一個(gè)梁?jiǎn)卧７治霾襟E：1、 改工作名程序 ANSYS ANSYS Interactive Working directory（設(shè)置工作目錄） Initial jobname:Eiffel Tower (設(shè)置工作文件名) Run OK

2、 2、 過(guò)濾界面Main Menu：Preferences 彈出如圖所示項(xiàng) Structural OK 3、 定義單元類型Main Menu：Preprocessor Element Type Add/Edit/Delete. Add beam：2d elastic 3 OK（返回到Element Types窗口）(4) 定義實(shí)常數(shù) ANSYS Main Menu：Preprocessor Real Constants Add 在cross-setional area里輸入（1e-3）OK (關(guān)閉 Real Constants 窗口) (5) 定義材料參數(shù) ANSYS Main Menu：Pr

3、eprocessor Material Props Material Models Structural Linear Isotropic EX: 2e11PRXY:0.3(定義泊松比及彈性模量) OK 定義密度DENS7800(6) 構(gòu)造平面模型 生成節(jié)點(diǎn) ANSYS Main Menu：Preprocessor Modeling Create Nodes In Active CS Node number:1，X，Y，Z Location in active CS:(-60,0,0)2（60,0,0)3(-44,58,0)4(44,58,0)5(-25,116,0)6(25,116,0) 7

4、(-12,276,0)8(12,276,0)9(-12,320,0)10(12,320,0)(7) 模型加約束 左邊施加X(jué),Y方向的位移約束 ANSYS Main Menu: Solution Define Loads Apply -Structural Displacement On Nodes 地面兩個(gè)節(jié)點(diǎn) OK Lab2: All DOF(施加X(jué),Y方向的位移約束) OK (8) 施加載荷 ANSYS Main Menu: Solution Define Loads Apply Structural Force/Moment On Nodes OK Lab：FX, Value:-2000

5、 10 (9) 計(jì)算分析 ANSYS Main Menu：Solution Analysis Type New Analysis Static OK ANSYS Main Menu：Solution Solve Current LS OK (10) 計(jì)算結(jié)果 ANSYS Main Menu：General Postproc Plot Results Contour Plot Nodal Solu Nodal solution DOF Solution Displacement vector sum OK(觀察位移矢量分布) ANSYS Main Menu：General Postproc Li

6、st Results Nodal Solu Nodal solution DOF Solution Displacement vector sum OK(查看各節(jié)點(diǎn)位移精確值) ANSYS Main Menu：General Postproc Plot Results deformed shape（查看位移變化）命令流：/CLEARn /FILNAME, Eiffel Tower nn A=1e-3n /PREP7 !* FINI/BATCH /GRA,POWER/GST,ON/PLO,INFO,3/GRO,CURL,ON/CPLANE,1 /REPLOT,RESIZE WPSTYLE,0/R

7、EPLOT,RESIZE /PREP7 FINISH /PREP7 !* FLST,3,5,8 FITEM,3,-0.15,-0.3,0FITEM,3,0.2,-0.25,0 FITEM,3,0.3,0.2,0 FITEM,3,-0.3,0.2,0 FITEM,3,-0.45,0,0 K, ,P51XLSTR, 4, 5 LSTR, 5, 1 LSTR, 1, 2 LSTR, 2, 3 LSTR, 3, 4 LSTR, 4, 1 LSTR, 5, 3 LSTR, 3, 1 LSTR, 2, 4 LSTR, 5, 2 L, 1, 4 /VIEW,1,1,1,1 /ANG,1 /REP,FAST

8、/VIEW,1,1,2,3 /ANG,1 /REP,FAST /VIEW,1,1 /ANG,1 /REP,FAST /VIEW,1,1 /ANG,1 /REP,FAST /VIEW,1,-1/ANG,1 /REP,FAST /VIEW,1,-1 /ANG,1 /REP,FAST /VIEW,1,-1 /ANG,1 /REP,FAST /AUTO,1 /REP,FAST /ANG,1,30,XS,1 /REP,FAST /ANG,1,-30,YS,1 /REP,FAST /ANG,1,30,ZS,1 /REP,FAST FINISH /REPLOT !* K,7, K,8,0.05, K,9,0

9、.1,0.05, LSTR, 7, 8 LSTR, 8, 9 !* LFILLT,7,8,0.015, , LSTR, 1, 4 ASBL, 1, 10 /DIST,1,0.729,1 /REP,FAST GPLOT FLST,5,3,4,ORDE,2 FITEM,5,2 FITEM,5,-4 CM,_Y,LINE LSEL, , , ,P51X CM,_Y1,LINE CMSEL,_Y !* LESIZE,_Y1, , ,3, , , , ,1 !* FLST,5,3,4,ORDE,2 FITEM,5,7 FITEM,5,-9 CM,_Y,LINE LSEL, , , ,P51X CM,_Y

10、1,LINE CMSEL,_Y !* LESIZE,_Y1,0.01, !* MSHAPE,0,2D MSHKEY,0!* FLST,5,2,5,ORDE,2 FITEM,5,2 FITEM,5,-3 CM,_Y,AREA ASEL, , , ,P51X CM,_Y1,AREA CHKMSH,AREA CMSEL,S,_Y !* AMESH,_Y1 !* CMDELE,_Y CMDELE,_Y1 CMDELE,_Y2 !* FINISH /PREP7 !* ET,1,PLANE42!* ET,2,SOLID45!* !* MPTEMP, MPTEMP,1,0 MPDATA,EX,1,2e11

11、MPDATA,PRXY,1,0.3 RPR4,6, , ,0.01,/VIEW, 1 ,1,1,1 /ANG, 1 /REP,FAST /AUTO, 1/REP/PNUM,KP,1 /PNUM,LINE,1/PNUM,AREA,0/PNUM,VOLU,0/PNUM,NODE,0/PNUM,TABN,0/PNUM,SVAL,0/NUMBER,0 !* /PNUM,ELEM,0/REPLOT !* K,7, K,8,0.05, K,9,0.1,0.05, LSTR, 7, 8 LSTR, 8, 9 !* LFILLT,7,8,0.015, , LSTR, 1, 4 ASBL, 1, 10 FLST,5,3,4,ORDE,2 FITEM,5,2 FITEM,5,-4 CM,_Y,LINE LSEL, , , ,P51X CM,_Y1,LINE CMSEL,_Y !* LESIZE,_Y1, , ,3, , , , ,1 !* FLST,5,3,4,ORDE,2 FIT