1、現(xiàn)在用ANSYS做一個平臺的管節(jié)點疲勞計算程序如下(前面的大部分略去)*dim,mk,array,1,5,*set,mk(1,1,1),2000000*set,mk(1,2,1),1000000*set,mk(1,3,1),800000*set,mk(1,4,1),1480000*set,mk(1,5,1),11380000/PREP7ET,1,BEAM188ET,2,PIPE59ET,3,PIPE16ET,4,COMBIN14MPTEMP,MPTEMP,1,0MPDATA,EX,1,2.1E11MPDATA,PRXY,1,0.3MPDATA,DENS,1,7850SECTYPE,1,BEAM

2、,CTUBE,b1,0SECOFFSET,CENTSECDATA,2.03,2.075,0,0,0,0,0,0,0,0SECTYPE,2,BEAM,CTUBE,b2,0SECOFFSET,CENTSECDATA,1.005,1.05,0,0,0,0,0,0,0,0SECTYPE,3,TAPER,SECDATA,1,(8*3*0.5)/3,0,8.5,SECDATA,2,(8*3*0.5)/3,0,85,R,1,R,2,2.572,0.1,R,3,2.5,0.028,R,4,1,0.02,0,0,0,0,R,5,1.5,0.025,0,0,0,0,R,6,2.0,0.025,0,0,0,0,R,

3、7,4.15,0.045,0,0,0,0,k,1,(8*3*0.5)/3,0,8.5,k,2,(8*3*0.5)/3,0,85,k,3,(8*3*0.5)/3,0,-6,k,4,0,8,-55,k,5,0,8,-7,k,6,0,8,-6,k,7,0,8,-5,k,8,0,8,-3,k,9,0,8,2.2,k,10,8*3*0.5,0,-55,k,11,8*3*0.5,0,-7,k,12,8*3*0.5,0,-6,k,13,8*3*0.5,0,-5,k,14,8*3*0.5,0,-3,k,15,8*3*0.5,0,2.2,k,16,0,-8,-55,k,17,0,-8,-7,k,18,0,-8,

4、-6,k,19,0,-8,-5,k,20,0,-8,-3,k,21,0,-8,2.2,k,22,(8*3*0.5)/3,0,-3,k,23,(8*3*0.5)/3,0,2.2,/solusolvefinish/post1fp,1,100,200,500,1000,1500,2000fp,7,10000,100000,1000000,2000000,3000000,5000000fp,13,6000000,7000000,8000000,9000000,10000000,11000000fp,19,12000000,15000000fp,21,150,120,110,100,95,90fp,27

5、,85,80,75,70,65,60fp,33,55,50,45,40,35,30fp,39,29,25save*set,n_num,node(4.6188,0,2.2)fl,1,n_numfsnode,n_num,1,1!取出指定應(yīng)力位置的應(yīng)力值fs,n_num,1,2,1,0,0,0,0,0,0fe,1,10000,2ftcalc,1當(dāng)運行到fsnode,n_num,1,1!取出指定應(yīng)力位置的應(yīng)力值這一步的時候總是出現(xiàn)錯誤說該點的應(yīng)力不可以獲得,請教各位指導(dǎo)迷津!如果王老師看見帖子希望幫忙分析下ftcalc,1!進行疲勞壽命使用系數(shù)的計算ansys計算疲勞功能是不太行的,ansys中的疲勞

6、計算，只能針對某一個節(jié)點計算，如果要想得到關(guān)于疲勞失效的應(yīng)力-應(yīng)變圖就不行了。你應(yīng)該安裝ansys的疲勞模塊用疲勞模塊對管節(jié)點進行疲勞分析,ANSYS的疲勞模塊功能是很強大的.ANSYS疲勞模塊安裝后在ANSYS中調(diào)用就可以方便的使用了,如下圖UTSYSMainMenuElLoadCaser*-wFilerL：=unFiletoexporttoANALTYFFLESUTYPofresiiltFE-FatiguebuttonsbuttonsTypeofan：dlyEiencodefnlFE-Fatiguefli中的模塊和菜單_WCODEOUTEKportd：ELt：ELtoafileSHELLJCFFLUCEDRResilltlocat