急，求救！请大神指导为何温度分析的结果不对称

firemcgrady

本人做的该模型是轴对称的，对整个模型施加的相同温度，外界环境温度也是一样的，模型外表面的对流换热系数也是一样的，但是计算结果的温度分布是不对称，看不出哪有问题。。。。
/com,thermal
/prep7
et,1,solid70
mp,kxx,1,1.5         
MP,C,1,960     
MP,ALPX,1,1.0E-5
MP,DENS,1,2400   
MP,PRXY,1,0.173
mp,ex,1,3e10

mp,kxx,2,49.8      
MP,C,2,465           
MP,ALPX,2,1.2e-5     
MP,DENS,2,7850
MP,PRXY,2,0.283
MP,EX,2,2E11

CYL4,,,0.2,,0.206,,0.6
CYL4,,,0.2,,,,0.6

wprota,,90
vsbw,all
wprota,,,90
vsbw,all
wprota,,,-90
wprota,,-90

vsel,s,,,1,4,1
vatt,1,,1
vsel,s,,,5,8,1
vatt,2,,1

mshape,0,3d
mshkey,1
lsel,s,length,,0.006   
lesize,all,,,1
lsel,s,length,,0.2,0.6
lesize,all,,,20
allsel,all
vmesh,all

!接触对设置
mp,mu,1,0.6
mp,mu,2,0.6
r,3
rmore,
rmore,,250  
et,4,170
et,5,174
KEYOPT,5,1,2
KEYOPT,5,5,1
KEYOPT,5,9,0
KEYOPT,5,10,2

!Generate the target surface
ASEL,S,,,50
ASEL,a,,,46
ASEL,a,,,36
ASEL,a,,,41
CM,_TARGET,AREA
TYPE,4
MAT,2   
REAL,3
NSLA,S,1
ESLN,S,0
ESURF
!Generate the contact surface
ASEL,S,,,33
ASEL,a,,,7
ASEL,a,,,25
ASEL,a,,,29
CM,_CONTACT,AREA      
TYPE,5
MAT,1
REAL,3
NSLA,S,1
ESLN,S,0
ESURF
ALLSEL,ALL
Finish

/solu                    !求解瞬态热分析
D,all,temp,200
toffst,273
antype,trans
timint,off
time,0.01
deltim,0.01
solve
ddele,all,TEMP

ASEL,S,,,35
ASEL,a,,,40
ASEL,a,,,45
ASEL,a,,,49
sfa,all,1,conv,10,25
allsel,all
timint,on
autots,on
time,36000
deltim,400,400,400
KBC,0
outres,all,all
solve
finish
save

孤狼1

楼主解决了吗？