/PREP7
ET,1,SOLID185
MP,EX,1,197e6
MP,PRXY,1,0.259
MP,DENS,1,2000
MP,ALPX,1,123e-6
MP,KXX,1,0.259
MP,C,1,1050
BLOCK,0,0.05,0,0.01,0,1.2e-5,
lsel,s,,,1,8
LESIZE,all,0.0005,,,,,,,1
allsel
lsel,s,,,9,12
LESIZE,all,,,5,,,,,1
allsel
mat,1
vmesh,1
/SOL
ANTYPE,0
nsel,s,,,2243
nsel,a,,,1
nsel,a,,,2122
nsel,a,,,2
nsel,a,,,22
nsel,a,,,2223
nsel,a,,,122
nsel,a,,,2123
D,all,,,,,,ALL,,,,,
*DIM,YY,TABLE,30,1,1,TIME,TEMP
*TREAD,YY,'yy','txt',' ',,
ANTYPE,4
TRNOPT,FULL
LUMPM,0
KBC,1
NSUBST,20
OUTRES,ERASE
OUTRES,ALL,ALL
TIME,7200
*DO,I,1,30
allsel
TI=YY(I,0)
TEMP=YY(I,1)
TIME=TI
BF,all,TEMP,%YY%
SOLVE
*ENDDO
finish
请问这是为何？