为什么我的ansys点焊模拟不产热

我的版本是14.5，计算点焊的电热耦合，用的单元是plane223，施加电流后为什么模型还是初始设定温度25℃，计算过程没有警告和错误。下面是计算过程

lsel,s,,,23
nsll,s,1
cp,2,volt,all
alls
/solu
antype,4
autots,on
kbc,1
outress,all,all
ic,all,temp,25
lsel,s,,,24
lsel,a,,,30
lsel,a,,,35
lsel,a,,,36
sfl,all,conv,3800,25
alls
lsel,s,,,6
lsel,a,,,12
lsel,a,,,1
lsel,a,,,7
lsel,a,,,9
lsel,a,,,5
lsel,a,,,4
lsel,a,,,32
lsel,a,,,15
lsel,a,,,18
lsel,a,,,33
sfl,all,conv,25,25
alls
lsel,s,,,27
dl,all,blank,volt,0
alls
fk,23,amps,30000
time,0.4
timint,on
deltim,0.005
solve