问题描述:在一个模型上分三次施予一定厚度的材料,该材料温度为150度。环境温度为20度,施加一层材料后,与空气对流2s,再施加另一层材料。我用生死单元的方法来做,怎么结果不对呢?请大侠帮我看看,谢谢了。困扰我好久了。下面是命令流:
/prep7
ET, 1, PLANE55
MP,KXX,1, 0.558
Mp,c, 1,3200
Mp, dens, 1, 900
ET,2,PLANE55
Mp,kxx,2,133
Mp,c,2,475
Mp,dens,2,6610
Csys,1
K,1,0.059,80
K,2,0.059,90
K,3,0.06,80
K,4,0.06,90
K,5,0.0601,80
K,6,0.0601,90
K,7,0.0602,80
K,8,0.0602,90
K,9,0.0603,80
K,10,0.0603,90
K,11,0.05,85
Larc,1,2,11,0.059
Larc,3,4,11,0.06
Larc,5,6,11,0.0602
Larc,7,8,11,0.0604
Larc,9,10,11,0.0606
L,1,3
L,3,5
L,5,7
L,7,9
L,2,4
L,4,6
L,6,8
L,8,10
kdelete,11
Mat,1
Type,1
Al,1,2,6,10
Mat,2
Type,2
Al,2,3,7,11
Al,3,4,8,12
Al,4,5,9,13
Lsel,s,line,,1,5,1
Lesize,all,,,40
Allsel
Lsel,s,line,,6,10,4
Lesize,all,,,6
Allsel
Lsel,s,line,,7,9,1
Lsel,a,line,,11,13,1
Lesize,all,,,2
Allsel
Amesh,all
FINISH
/solu
Antype,trans
TRNOPT,FULL
LUMPM,0
Nropt,full
Asel,s,area,,1
Nsla,s,1
D,all,temp,20
Allsel
Asel,s,,,2
Nsla,s,1
D,all,temp,150
Allsel
Asel,s,area,,3,4
Esla,s
Ekill,all
TIME,0.01
Timint,off
allsel
Solve
Ddele,all,temp
Lsel,s,,,3
Sfl,all,,conv,5e-5,20
Timint,on
Time,2
Autots,on
Deltim,0.5,0.5,10,1
Outres,all,all
Allsel
Solve
!激活3面单元
Allsel
Asel,s,,,3
Esla,s
Ealive,all
Nsla,s,1
D,all,temp,150
TIME,2.01
Timint,off
Allsel
Solve
Ddele,all,temp
Lsel,s,,,4
Sfl,all,,conv,5e-5,20
Timint,on
Time,4
Autots,on
Kbc,1
Deltim,0.5,0.5,10,1
Outres,all,all
Allsel
solve
!激活4面单元
Allsel
Asel,s,,,4
Esla,s
Ealive,all
Nsla,s,1
D,all,temp,150
TIME,4.01
Timint,off
Allsel
Solve
Ddele,all,temp
Lsel,s,,,5
Sfl,all,,conv,5e-5,20
Timint,on
Time,6
Autots,on
Kbc,1
Deltim,0.5,0.5,10,1
Outres,all,all
Allsel
solve
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