小弟用间接法进行应力场分析,使用温度场分析结果来进行应力场分析时出错,***WARNING***CP=9.984TIME=15:49:08ElementsoftypeSOLID45donothaveatemperaturedegreeoffreedomsotheETCHG,TTScommandignoresthem.*

Question

小弟用间接法进行应力场分析,使用温度场分析结果来进行应力场分析时出错,
*** WARNING *** CP = 9.984 TIME= 15:49:08
Elements of type SOLID45 do not have a temperature degree of freedom so
the ETCHG,TTS command ignores them.
*** WARNING *** CP = 9.984 TIME= 15:49:08
Elements of type SOLID95 do not have a temperature degree of freedom so
the ETCHG,TTS command ignores them.这2个什么原因?具体怎么改正
*** WARNING *** CP = 10.062 TIME= 15:49:09
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.
*** ERROR *** CP = 10.125 TIME= 15:49:09
An error occurred while attempting to open the results file file.rst.
*** ERROR *** CP = 10.234 TIME= 15:49:13
No results file available.最后2个error什么原因?具体怎么改正?下面是小弟的命令流：不合适的地方请大家指出来谢谢!
resume,transient_double_ellipsoid_simpl,DB
/com,structural
/title,stress_transient_double_ellipsoid_simple1
/prep7
etchg,tts
定义泊松比、线膨胀系数、弹性模量.
/solu
lsclear,solid 清除加载到热分析实体模型中的所有载荷（包括边界条件）
重新施加位移边界条件
DA,23,UX
DA,1,UZ
DA,25,UZ.
设置非线性求解选项（省略）
*do,im,0,(N+sn),循环结构表示热源移动
/prep7
etchg,tts 变结构单元为热单元
/post1
set,1,6.5 读取载荷步的温度
nsel,s,temp,1500,3000 选中温度范围为1500一3000的节点
esln,s,1 选中上述满足要求的节点所在的单元
ekill,all
esel,s,live
/prep7
etchg,tts 变热单元为结构单元
/solu
tm=dt1+im*tinc
ldread,temp,tm,transient_double_ellipsoid_simpl,rth 读取温度场的计算结果作为应力场施加的体载荷施加到节点上
time,tm
otltres,all,last
solve
bfdele,all,hgen 删除节点温度载荷
*enddo

Answer 1

第一个 etchg,tts
改为 etchg,stt