请教：做了个简单的热分析例子，老是不收敛，高手给找找原因
!建模命令流/FILNAME,tuliao,0
*SET,d1,0.020
*SET,h1,0.003
*SET,h2,0.015
*SET,h3,0.00025
/PREP7
RECTNG,0,d1/2,-h2,0.028,
RECTNG,0,d1/2+h1+h3,0.028,0.028+h3,
RECTNG,0,d1/2+h1+h2+h3,0.028+h2,0.028+h3,
RECTNG,d1/2+h1,d1/2+h1+h3,h1+h3,0.028,
RECTNG,d1/2+h1,d1/2,h1,0.028,
RECTNG,d1/2+h1,d1/2+0.100+h3,h1,h1+h3,
RECTNG,d1/2+0.100,d1/2+0.100+h3,-h3,h1,
RECTNG,d1/2,d1/2+0.100,0,-h3,
RECTNG,d1/2+h1+h3,d1/2+h1+h2+h3,h1+h3,0.028+h3,
RECTNG,d1/2,d1/2+0.100,0,h1,
RECTNG,d1/2+h1+h2+h3,d1/2+0.100+h2+h3,h1+h2+h3,h1+h3,
RECTNG,d1/2+0.100+h3,d1/2+0.100+h2+h3,-h2,h1+h3,
RECTNG,d1/2+0.100+h3,d1/2,-h2,-h3,
!定义单元及热物性参数
ET,1,PLANE55
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,DENS,1,,2665
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,KXX,1,,175.56
MPTEMP,,,,,,,,
MPTEMP,1,0
MPTEMP,2,540
MPTEMP,3,595
MPTEMP,4,800
MPDATA,ENTH,1,,0
MPDATA,ENTH,1,,1.5865E9
MPDATA,ENTH,1,,2.774E9
MPDATA,ENTH,1,,3.479E9
MPTEMP,,,,,,,,
MPDATA,DENS,2,,7874
MPTEMP,1,50
MPTEMP,2,100
MPTEMP,3,150
MPTEMP,4,200
MPTEMP,5,250
MPTEMP,6,300
MPTEMP,7,350
MPTEMP,8,400
MPTEMP,9,450
MPTEMP,10,500
MPTEMP,11,550
MPTEMP,12,600
MPDATA,C,2,,486
MPDATA,C,2,,502
MPDATA,C,2,,515
MPDATA,C,2,,528
MPDATA,C,2,,548
MPDATA,C,2,,569
MPDATA,C,2,,586
MPDATA,C,2,,611
MPDATA,C,2,,649
MPDATA,C,2,,691
MPDATA,C,2,,708
MPDATA,C,2,,733
MPTEMP,,,,,,,,
MPTEMP,1,50
MPTEMP,2,100
MPTEMP,3,150
MPTEMP,4,200
MPTEMP,5,250
MPTEMP,6,300
MPTEMP,7,350
MPTEMP,8,400
MPTEMP,9,450
MPTEMP,10,500
MPTEMP,11,550
MPTEMP,12,600
MPDE,C,2
MPDATA,C,2,,486
MPDATA,C,2,,502
MPDATA,C,2,,515
MPDATA,C,2,,528
MPDATA,C,2,,548
MPDATA,C,2,,569
MPDATA,C,2,,586
MPDATA,C,2,,611
MPDATA,C,2,,649
MPDATA,C,2,,691
MPDATA,C,2,,708
MPDATA,C,2,,733
MPTEMP,,,,,,,,
MPTEMP,1,50
MPTEMP,2,100
MPTEMP,3,150
MPTEMP,4,200
MPTEMP,5,250
MPTEMP,6,300
MPTEMP,7,350
MPTEMP,8,400
MPTEMP,9,450
MPTEMP,10,500
MPTEMP,11,550
MPTEMP,12,600
MPDATA,KXX,2,,51.9
MPDATA,KXX,2,,51.5
MPDATA,KXX,2,,50.7
MPDATA,KXX,2,,49.8
MPDATA,KXX,2,,48.1
MPDATA,KXX,2,,46.9
MPDATA,KXX,2,,45.6
MPDATA,KXX,2,,44.4
MPDATA,KXX,2,,41.9
MPDATA,KXX,2,,40.2
MPDATA,KXX,2,,38.1
MPDATA,KXX,2,,36.1
MPDATA,DENS,2,,7874
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,KXX,3,,0.6
MPDATA,DENS,3,,780
MPDATA,C,3,,213
只是简单的在材料2，3上施加了初始条件200度；材料1上780度；轮廓线施加对流条件20.88
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