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[求助]
纯钨块，5e9W/m2热流密度在上表面作用200微秒，计算温度场，不收敛。
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纯钨块（直径10mm，厚度1mm），5e9W/m2热流密度在上表面作用200微秒，计算温度场和应力场分布。先算温度场，采用PLANE55。 遇到的问题：不收敛。将热流密度改为4e9则可以算出温度场分布，或者将厚度改为500微米也可以算出温度场分布。求指点！ 命令流如下： /PREP7 !* ET,1,PLANE55 !* MPTEMP,,,,,,,, !定义不同温度点 MPTEMP,1,20 MPTEMP,2,100 MPTEMP,3,200 MPTEMP,4,300 MPTEMP,5,400 MPTEMP,6,500 MPTEMP,7,600 MPTEMP,8,700 MPTEMP,9,800 MPTEMP,10,900 MPTEMP,11,1000 MPDATA,EX,1,1,397.9E9 !定义材料不同温度下的弹性模量 MPDATA,EX,1,2,397.4E9 MPDATA,EX,1,3,396.355E9 MPDATA,EX,1,4,394.766E9 MPDATA,EX,1,5,392.634E9 MPDATA,EX,1,6,389.959E9 MPDATA,EX,1,7,386.741E9 MPDATA,EX,1,8,382.979E9 MPDATA,EX,1,9,378.674E9 MPDATA,EX,1,10,373.856E9 MPDATA,EX,1,11,366.434E9 MPTEMP,,,,,,,, !定义不同温度点 MPTEMP,1,20 MPTEMP,2,100 MPTEMP,3,200 MPTEMP,4,300 MPTEMP,5,400 MPTEMP,6,500 MPTEMP,7,600 MPTEMP,8,700 MPTEMP,9,800 MPTEMP,10,900 MPTEMP,11,1000 MPDAMP,PRXY,1,1,0.2792 !定义材料不同温度下的泊松比 MPDAMP,PRXY,1,2,0.2801 MPDAMP,PRXY,1,3,0.2812 MPDAMP,PRXY,1,4,0.2823 MPDAMP,PRXY,1,5,0.2834 MPDAMP,PRXY,1,6,0.2844 MPDAMP,PRXY,1,7,0.2855 MPDAMP,PRXY,1,8,0.2866 MPDAMP,PRXY,1,9,0.2877 MPDAMP,PRXY,1,10,0.2888 MPDAMP,PRXY,1,11,0.2899 MPTEMP,,,,,,,, !定义不同温度点 MPTEMP,1,20 MPTEMP,2,100 MPTEMP,3,200 MPTEMP,4,300 MPTEMP,5,400 MPTEMP,6,500 MPTEMP,7,600 MPTEMP,8,700 MPTEMP,9,800 MPTEMP,10,900 MPTEMP,11,1000 MPDAMP,DENS,1,1,19.298E3 !定义材料不同温度下的密度 MPDAMP,DENS,1,2,19.279E3 MPDAMP,DENS,1,3,19.254E3 MPDAMP,DENS,1,4,19.229E3 MPDAMP,DENS,1,5,19.204E3 MPDAMP,DENS,1,6,19.178E3 MPDAMP,DENS,1,7,19.152E3 MPDAMP,DENS,1,8,19.125E3 MPDAMP,DENS,1,9,19.098E3 MPDAMP,DENS,1,10,19.07E3 MPDAMP,DENS,1,11,19.04E3 MPTEMP,,,,,,,, !定义不同温度点 MPTEMP,1,20 MPTEMP,2,100 MPTEMP,3,200 MPTEMP,4,300 MPTEMP,5,400 MPTEMP,6,500 MPTEMP,7,600 MPTEMP,8,700 MPTEMP,9,800 MPTEMP,10,900 MPTEMP,11,1000 MPDAMP,KXX,1,1,174.927 !定义材料不同温度下的热传导系数 MPDAMP,KXX,1,2,164.75 MPDAMP,KXX,1,3,155.527 MPDAMP,KXX,1,4,147.212 MPDAMP,KXX,1,5,139.757 MPDAMP,KXX,1,6,133.115 MPDAMP,KXX,1,7,127.239 MPDAMP,KXX,1,8,122.083 MPDAMP,KXX,1,9,117.599 MPDAMP,KXX,1,10,113.74 MPDAMP,KXX,1,11,110.46 MPTEMP,,,,,,,, !定义不同温度点 MPTEMP,1,20 MPTEMP,2,100 MPTEMP,3,200 MPTEMP,4,300 MPTEMP,5,400 MPTEMP,6,500 MPTEMP,7,600 MPTEMP,8,700 MPTEMP,9,800 MPTEMP,10,900 MPTEMP,11,1000 UIMP,1,REFT,,, !定义热膨胀参考温度UIMP，MAT，Lab1，Lab2，Lab3，VAL1，VAL2，VAL3 MPDAMP,ALPX,1,1,3.39E-6 !定义材料不同温度下的热膨胀系数 MPDAMP,ALPX,1,2,3.52E-6 MPDAMP,ALPX,1,3,3.73E-6 MPDAMP,ALPX,1,4,3.85E-6 MPDAMP,ALPX,1,5,3.96E-6 MPDAMP,ALPX,1,6,4.04E-6 MPDAMP,ALPX,1,7,4.13E-6 MPDAMP,ALPX,1,8,4.21E-6 MPDAMP,ALPX,1,9,4.3E-6 MPDAMP,ALPX,1,10,4.38E-6 MPDAMP,ALPX,1,11,4.45E-6 TB,BISO,1,3,2, !定义非线性材料特性表，材料号1，3个温度点，2个数据点；Tb, lab, mat, ntemp,npts,tbopt,eosopt TBTEMP,20 ！定义不同温度下的屈服强度和切线模量 TBDATA,,1360e6,1.3e9,,,, TBTEMP,500 TBDATA,,854e6,1e9,,,, TBTEMP,1000 TBDATA,,465e6,0.8e9,,,, MPTEMP,,,,,,,, !定义不同温度点 MPTEMP,1,20 MPTEMP,2,100 MPTEMP,3,200 MPTEMP,4,300 MPTEMP,5,400 MPTEMP,6,500 MPTEMP,7,600 MPTEMP,8,700 MPTEMP,9,800 MPTEMP,10,900 MPTEMP,11,1000 MPDAMP,C,1,1,157.69 !定义材料不同温度下的比热 MPDAMP,C,1,2,155.063 MPDAMP,C,1,3,152.363 MPDAMP,C,1,4,149.595 MPDAMP,C,1,5,146.759 MPDAMP,C,1,6,143.854 MPDAMP,C,1,7,140.881 MPDAMP,C,1,8,137.84 MPDAMP,C,1,9,134.731 MPDAMP,C,1,10,131.554 MPDAMP,C,1,11,128.308 MPTEMP,,,,,,,, !定义不同温度点 MPTEMP,1,0 MPTEMP,2,3409 MPTEMP,3,3411 MPTEMP,4,3500 MPTEMP,5,5500 MPDATA,ENTH,1,,0 !定义材料不同温度下的焓值 MPDATA,ENTH,1,,8.44e9 MPDATA,ENTH,1,,1.34e10 MPDATA,ENTH,1,,1.38e10 MPDATA,ENTH,1,,2.279e10 RECTNG,0,0.01,0,0.001, FLST,5,2,4,ORDE,2 FITEM,5,2 FITEM,5,4 CM,_Y,LINE LSEL, , , ,P51X CM,_Y1,LINE CMSEL,,_Y !* LESIZE,_Y1, , ,20, , , , ,1 !* FLST,5,2,4,ORDE,2 FITEM,5,1 FITEM,5,3 CM,_Y,LINE LSEL, , , ,P51X CM,_Y1,LINE CMSEL,,_Y !* LESIZE,_Y1, , ,500, , , , ,1 !* MSHKEY,0 CM,_Y,AREA ASEL, , , , 1 CM,_Y1,AREA CHKMSH,'AREA' CMSEL,S,_Y !* AMESH,_Y1 !* CMDELE,_Y CMDELE,_Y1 CMDELE,_Y2 !* FINISH /SOLU !* ANTYPE,4 !* TRNOPT,FULL LUMPM,0 !* NSUBST,20,100000,0 OUTRES,ERASE OUTRES,ALL,ALL AUTOTS,1 LNSRCH,1 TIME,0.0002 TUNIF,20, FLST,2,1,4,ORDE,1 FITEM,2,3 /GO !* SFL,P51X,HFLUX,5e9, ! /STATUS,SOLU SOLVE FINISH [ 发自手机版 http://muchong.com/3g ] |
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