急！！求助 焊接残余应力分析

风飞烟

最近在做一个焊接残余应力的分析 热分析做完 在转入结构分析的时候 计算不了 一下是结构分析的命令流 希望大家指教：
/TITLE,yinglifenxi
/prep7     
etchg,tts
tref,20
MPTEMP,,,,,,,,  
MPTEMP,1,20  
MPTEMP,2,250
MPTEMP,3,500
MPTEMP,4,750
MPTEMP,5,1000
MPTEMP,6,1500
MPTEMP,7,1700   
MPTEMP,8,2500  
MPDATA,EX,1,,2.05E11
MPDATA,EX,1,,1.87E11
MPDATA,EX,1,,1.5E11
MPDATA,EX,1,,7E10
MPDATA,EX,1,,2E10
MPDATA,EX,1,,1.9E10
MPDATA,EX,1,,1.8E10
MPDATA,EX,1,,1.2E10
MPDATA,PRXY,1,,0.28
MPDATA,PRXY,1,,0.29
MPDATA,PRXY,1,,0.31
MPDATA,PRXY,1,,0.35
MPDATA,PRXY,1,,0.4
MPDATA,PRXY,1,,0.45
MPDATA,PRXY,1,,0.48
MPDATA,PRXY,1,,0.5
MPDATA,ALPX,1,,1.1E-5
MPDATA,ALPX,1,,1.22E-5
MPDATA,ALPX,1,,1.39E-5
MPDATA,ALPX,1,,1.48E-5
MPDATA,ALPX,1,,1.34E-5
MPDATA,ALPX,1,,1.33E-5
MPDATA,ALPX,1,,1.32E-5
MPDATA,ALPX,1,,1.31E-5
TB,BISO,l,6,2，
TBTEMP,20
TBDATA,,2.20E+08,2.05E+10
TBTEMP,500
TBDATA,,1.30E+08,l.50E+10
TBTEMP,750
TBDATA,,4.00E+07,7.00E+09
TBTEMP,1000
TBDATA,,2.50E+07,2.00E+09
TBTEMP,1700
TBDATA,,1.00E+06,1.80E+09
TBTEMP,2500
TBDATA,,1.00E+05,1.20E+09

施加边界条件
/solu
ALLSEL,ALL
FLST,5,5,4,ORDE,2   
FITEM,5,1   
FITEM,5,-5  
LSEL,S,,,P51X
NSLL,S,1
D,P51X,,,,,,ALL,,,,,  

ALLSEL,ALL
FLST,5,5,4,ORDE,5   
FITEM,5,46  
FITEM,5,54  
FITEM,5,59  
FITEM,5,64  
FITEM,5,69  
LSEL,S,,,P51X
NSLL,S,1
D,P51X,,,,,,UX,UY,,,,  

ALLSEL,ALL  
FLST,5,2,4,ORDE,2   
FITEM,5,47  
FITEM,5,70  
LSEL,S,,,P51X
NSLL,S,1
D,P51X,,,,,,UX,UY,,,,  
*do,i,1,50
/prep7
etchg,stt
finish


/post1     
set,i,last,1,!读取第I载荷步最后一个子步的温度值
nsel,s,temp,1500,3000,,0!选节点
esln,s,1  !选中满足要求的节点所在单元
finish
/prep7
emodif,all,mat,1
allsel,all
etchg,tts   !变热单元为结构单元
finish

/solu
antype,4
NLGEOM,ON
tref，20
tunif，20
autots,on
pred,on,,on
kbc,0
ldread,temp,,,0.2*i,,'file','rst','.'
time,0.2*i
outres,all,last
solve
*enddo


计算时间出现的警告
The current solution may have been produced using different model or   
boundary condition data than is currently stored.  POST1 results may   
be erroneous unless you perform a new solution using the stored data.

不知道问题出在哪里 请大家指教 谢谢

风飞烟

高手 帮忙指教一下吧

wuyp802

单元转换都得出现这种警告吧
可以继续运行