menyueqi 发表于 2007-3-23 08:48

请教:电缆受热分析

请教:电缆的热分析

大家好,我做了一个电缆的有限元分析,是关于受热电缆中传输信号的变化问题。将电缆和聚乙烯的外层放在受热的空气中。我考虑的是二维横截面问题,命令流如下,但是得出的结果是温度全都变成空气的温度了。若加把电载荷的话,请问应该如何施加。请指教了,谢谢了呀。
/PREP7
!*
ET,1,PLANE55
!*
!*
MPTEMP,,,,,,,,
MPTEMP,1,20
MPTEMP,2,100
MPDATA,KXX,1,,395   
MPDATA,KXX,1,,392   
MPTEMP,,,,,,,,
MPTEMP,1,20
MPTEMP,2,100
MPDATA,C,1,,381
MPDATA,C,1,,399
!
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,KXX,2,,0.167
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,C,2,,1842
!
CYL4, , ,0.003
CYL4, , ,0.003, ,0.004
aglue,all,
!
TYPE,   1   
MAT,       1
amesh,1
TYPE,1
MAT,2
amesh,3
FINISH
!
/SOLU
ANTYPE,4
!*
TRNOPT,FULL
LUMPM,0
!*
DELTIM,0.01,0,0
KBC,1.0
TIME,0.01   
TIMINT,0
IC,ALL,TEMP,20
lsel,s,,,5,8
SFL,all,CONV,57, ,100,
SOLVE
!
DELTIM,18,3,45
AUTOTS,1
KBC,1.0
TIME,18000
TIMINT,1
!*
OUTRES,ALL,ALL,
!*
OUTPR,BASIC,ALL,
solve   
FINISH
!
/POST1
!*
PLNSOL, TEMP,, 0
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