solid5单元是不是不可以做大变形的耦合场分析？

清秋锁寒

做了一个制动盘制动的模型，也就是一个旋转摩擦生热的例子。计算时候发现不收敛，回头检查时，发现err文件中有一句 “Large deflection effects not included for KEYOPT(1) = 0 of element SOLID5. ”我想问下是不是solid5单元的问题？

ldhltw

检查单元帮助文件

ant820

你的这个模型我做出来过的  没遇到你说的问题  怎么跑出来个大变形 我有点不明白

清秋锁寒

ant820 发表于 2011-11-11 16:46
你的这个模型我做出来过的  没遇到你说的问题  怎么跑出来个大变形 我有点不明白 ...

我是拿网上一些命令流，对照help文件查意思，然后又自己写的命令。有些我也不太清楚。具体的命令如下
/PREP7  
ET,1,5,0
mp,ex,1,1.5e11   
mp,prxy,1,0.25   
mp,dens,1,7300
mp,alpx,1,1.2E-05
mp,kxx,1,50
mp,c,1,520
mp,mu,1,0.38
toffst,273
TUNIF,0

mp,ex,2,2.8e10   
mp,prxy,2,0.35   
mp,dens,2,3960
mp,alpx,2,1.2E-05
mp,kxx,2,48
mp,c,2,600
mp,mu,2,0.38

mp,dens,3,7300
  
CYL4, , ,0.0325, ,0.128, ,0.006
type,1
mat,1
lsel,  , , ,1,16,1  
lesize,all,,,12  
lsel,  , , ,17,20,1  
lesize,all,,,3  
vsweep,1
allsel,all

csys,1  
nrotat,all  
allsel,all
  
n,20000,0,0,0
n,20001,0,0,0.002
n,20002,0,0,0.004
n,20003,0,0,0.006

et,2,184,1
type,2
mat,3

*do,j,0,3,1
nsel,,loc,x,0.0325
nsel,r,loc,z,0.002*j
*get,nodecount1,node,0,count
k=0
s=20000+j
*do,i,1,nodecount1,1
k=ndnext(k)
e,s,k
*enddo

*enddo

allsel,all
csys,0
wpoffs,,,0.006
CYL4, , ,0.077, ,0.125,64.5,0.0143   

lsel,s,line,,24,25,1
lsel,a,line,,22
lsel,a,line,,27
LESIZE,all, , ,20, , , , ,1
type,1
mat,2
vsweep,2
allsel,all

ET,3,170
ET,4,174,1

ASEL,S,,,2
NSLA,S,1
R,1  
TYPE,3  
ESURF  
allsel
  
ASEL,S,,,7
NSLA,S,1
TYPE,4
ESURF  
allsel

ASEL,S,,,1
da,all,symm

*DIM,PRE,TABLE,2,1,1,TIME
PRE(1,0,1)=0
PRE(1,1,1)=10
PRE(2,0,1)=10
PRE(2,1,1)=10
  
ASEL,S,,,8
NSLA,S,1
SF,all,PRES, %PRE%
allsel
FINISH  

/SOL
antype,4
TRNOPT,FULL
LUMPM,0
NLGEOM,on   
nsubst,400,800,200
outres,all,-10  
time,0.1
autots,on

asel,,,,8
nsla,,1
cp,next,uz,all

asel,,,,7
nsla,,1
d,all,ux,0,,,,uy

asel,,,,2
nsla,,1
d,all,uz,0
allsel,all

nsel,,,,20000,20003,1
d,all,ux,0,,,,uy,uz,rotx,roty
allsel,all

csys,1
vsel,,,,1
nslv,,1
*get,nodecount,node,0,count
*do,i,1,nodecount,1   
ic,i,uy,,40*nx(i)
*enddo
allsel,all
solve

dragonsea

我也遇到同样的问题，Large deflection effects not included for KEYOPT(1) = 0 of element      
SOLID5.
是不是 SOLID5在进行热-结构耦合时不支持大变形？