求助

cheersbg

请教一下，简单的传热分析时出现运算时不收敛
一般是哪儿方面的问题？
命令流如下：
/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

载荷只是材料1的初始温度为780，材料2、3的都是200。外面加的是对流条件

gus1977

请你注意
http://www.simwe.com/forum/viewthread.php?tid=591648