我最近在做一个热分析的问题。就是两个根轴的端部接触,理论上应该考虑接触热阻的。
为简化,我于是先不考虑热触热阻。
考虑为轴对称问题,故只画一个截面变可以了,
轴的两边的边界条件设为温度载荷时能很好的收敛
但一端设为热流密度,一端设为温度载荷时却会提示出错,有很多warnings
哪位指点一下,谢谢!
命令流如下:
finish
/CLEAR
keyw,pr_therm,1 !分析类型为热分析
/PREP7
ET,1,PLANE55
!KEYOPT,1,1,0
KEYOPT,1,3,1
!KEYOPT,1,4,0
!KEYOPT,1,8,0
!KEYOPT,1,9,0
MP,KXX,1,339
RECTNG,0,0.01,0,0.015,
RECTNG,0.01,0.015,0,0.01,
RECTNG,0.015,0.02,0,0.01,
AADD,1,2
ALLSEL,ALL
LCOMB,1,13,0
NUMCMP,AREA
NUMCMP,LINE
allsel
LESIZE,1, , ,15, , , , ,1
LESIZE,2, , ,10, , , , ,1
LESIZE,3, , ,15, , , , ,1
LESIZE,4, , ,10, , , , ,1
LESIZE,5, , ,5, , , , ,1
LESIZE,6, , ,5, , , , ,1
LESIZE,7, , ,10, , , , ,1
LESIZE,8, , ,5, , , , ,1
LESIZE,9, , ,10, , , , ,1
LESIZE,10, , ,5, , , , ,1
ALLSEL
!
ASEL, S, , ,1
AATT,1,,1,0,
mshkey,0
MAT,1
AMESH,1
!
ALLSEL
!
ASEL, S, , , 2
AATT,1,,1,0,
mshkey,0
MAT,1
AMESH,2
nsel,s,loc,x,0.015
cp,1,temp,all !接触处耦合
FINISH
/sOLU
ALLSEL
ANTYPE,0
DL,3, ,TEMP,1473,0
!sfl,3, hflux,3e6 !当左端边界条件设为热流密度时,求解时出现很多warnings
DL,7, ,TEMP,1373,0
TIME,1000
KBC,0
!!DELTIM,1,1000,800
AUTOTS,1
outres,all
OUTPR,NSOL,LAST
solve
FINISH
/post1
set,last
plnsol,temp
!!PLNSOL, TF,X, 0 |