求解桩锚支护时节点位移太大是怎么回事

lcx000125

我做一个桩锚支护的ANSYS模拟，可是计算时总说节点1913的UX方向节点位移大于机器容许值100000
不知道为什么，求助
这是我编的命令流
finish
/clear
/filname,kang
/title,kang
/prep7

et,1,42
keyopt,1,3,2
et,2,3
et,3,169
et,4,171
et,5,link1

r,1,,,1,0.001
rmore,,,2.6e4
r,2,0.6,0.6*0.6*0.6/12,0.6
r,3,0.0017

mp,ex,1,4.5e7
mp,nuxy,1,0.35
mp,dens,1,19000
mp,mu,1,0.078
tb,dp,1
tbdata,1,8000,5

mp,ex,2,4.5e7
mp,nuxy,2,0.35
mp,dens,2,19000
mp,mu,2,0.078
tb,dp,2
tbdata,1,8000,5

mp,ex,3,3e7
mp,nuxy,3,0.25
mp,dens,1,19000
mp,mu,1,0.2
tb,dp,3
tbdata,1,7900,12.9


mp,ex,4,3e7
mp,nuxy,4,0.25
mp,dens,4,19000
mp,mu,4,0.2
tb,dp,4
tbdata,1,7900,12.9

mp,ex,5,3e7
mp,nuxy,5,0.25
mp,dens,5,19000
mp,mu,5,0.2
tb,dp,5
tbdata,1,7900,12.9

mp,ex,6,1e7
mp,nuxy,6,0.25
mp,dens,6,19200
mp,mu,6,0.19
tb,dp,6
tbdata,1,15500,11.7

mp,ex,7,1e7
mp,nuxy,7,0.25
mp,dens,7,19200
mp,mu,7,0.19
tb,dp,7
tbdata,1,15500,11.7

mp,ex,8,1e7
mp,nuxy,8,0.25
mp,dens,8,19200
mp,mu,8,0.19
tb,dp,8
tbdata,1,15500,11.7

mp,ex,9,1e7
mp,nuxy,9,0.3
mp,dens,9,19200
mp,mu,9,0.22
tb,dp,9
tbdata,1,9000,13.4

mp,ex,10,1e7
mp,nuxy,10,0.3
mp,dens,10,19400
mp,mu,10,0.2
tb,dp,10
tbdata,1,21300,12.2

mp,ex,11,1e7
mp,nuxy,11,0.3
mp,dens,11,19900
mp,mu,11,0.19
tb,dp,11
tbdata,1,11600,11.6

mp,ex,12,4e7
mp,nuxy,12,0.25
mp,dens,12,19500
mp,mu,12,0.2
tb,dp,12
tbdata,1,30600,12.2

mp,ex,13,2.55e10
mp,nuxy,13,0.2
mp,dens,13,25000

mp,ex,14,3e7
mp,nuxy,14,0.2
mp,dens,14,24700

k,1,0,-2.5
k,2,12,-5.381
l,1,2

rectng,-0.6,-3.6,-0.8,0
rectng,-0.6,-3.6,-1.5,-0.8
rectng,-0.6,-3.6,-2.8,-1.5
rectng,-0.6,-3.6,-3.3,-2.8
rectng,-0.6,-3.6,-4.75,-3.3
rectng,-0.6,-3.6,-5.6,-4.75
rectng,-0.6,-3.6,-7.6,-5.6
rectng,-0.6,-3.6,-10.7,-7.6
rectng,-0.6,-3.6,-11.8,-10.7
rectng,-0.6,-3.6,-13,-11.8
rectng,-0.6,-3.6,-13.3,-13

rectng,0,18,-0.8,0
rectng,0,18,-1.5,-0.8
rectng,0,18,-3.3,-1.5
rectng,0,18,-5.6,-3.3
rectng,0,18,-7.6,-5.6
rectng,0,18,-10.7,-7.6
rectng,0,18,-11.8,-10.7
rectng,0,18,-13,-11.8
rectng,0,18,-13.3,-13

allsel,all
aglue,all
numcmp,all


rectng,0,-0.6,-0.8,0
rectng,0,-0.6,-1.5,-0.8
rectng,0,-0.6,-13,-1.5
rectng,0,-0.6,-13.3,-13

save


allsel
esize,0.1

type,1
mat,1
amesh,2
mat,2
amesh,1
amesh,21
mat,3
amesh,14
amesh,13
mat,4
amesh,3
amesh,22
amesh,4
mat,5
amesh,5
mat,6
amesh,6
mat,7
amesh,15
mat,8
amesh,7
mat,9
amesh,16
amesh,8
mat,10
amesh,9
amesh,17
mat,11
amesh,10
amesh,18
mat,12
amesh,11
amesh,12
amesh,19
amesh,20
amesh,24

type,2
real,2
mat,13
amesh,23


type,5
real,3
mat,14
lmesh,1
save


allsel
lsel,s,,,72
lsel,a,,,73
lsel,a,,,75
nsll,s,1
type,3
real,1
esurf,all
allsel,all



lsel,s,,,31
lsel,a,,,33
lsel,a,,,35
lsel,a,,,37
lsel,a,,,39
lsel,a,,,41
lsel,a,,,43
lsel,a,,,45
lsel,a,,,47

lsel,a,,,50
lsel,a,,,52
lsel,a,,,54
lsel,a,,,56
lsel,a,,,58
lsel,a,,,60


lsel,a,,,78
nsll,s,1
type,4
real,1
esurf,all
allsel,all

nsel,s,loc,x,-3.6
nsel,a,loc,x,18
d,all,ux
nsel,s,loc,y,-13.3
d,all,uy
alls


FINISH  
/SOLU   
ANTYPE,STATIC   
PRED,ON
LNSRCH,ON   
NLGEOM,ON   
NROPT,FULL  
OUTRES,ALL,ALL
CNVTOL,F,,0.02,2,0.5  
NSUBST,6,10

TIME,1  
ACEL,,9.8
ESEL,S,MAT,,14
EKILL,ALL
ESEL,ALL
ESEL,S,LIVE
NSLE,S
NSEL,INVE
D,ALL,ALL
ALLSEL
SOLVE
SAVE,S1,DB

TIME,2

ESEL,S,MAT,,2
ESEL,A,MAT,,4
EKILL,ALL
ESEL,ALL
ESEL,S,LIVE
NSLE,S
NSEL,INVE
D,ALL,ALL

ALLSEL
SOLVE
SAVE,S2,DB

TIME,3
ESEL,S,MAT,,14  
EALIVE,ALL  
NSLE,S  
DDELE,ALL,ALL   
ESEL,ALL
ESEL,S,LIVE
NSLE,S  
NSEL,INVE   
D,ALL,ALL   
ALLSEL  
SOLVE
SAVE,S3,DB

TIME,4
ESEL,S,MAT,,5
EKILL,ALL
ESEL,ALL
ESEL,S,LIVE
NSLE,S
NSEL,INVE
D,ALL,ALL

ALLSEL
SOLVE
SAVE,S4,DB

charming920

节点合并下看行不行，NUMMRG,ALL

htbbzzg

问题在以下几句话：

  ESEL,S,LIVE       !  选择所有活单元
  NSLE,S              !  选择所有活单元的节点
  NSEL,INVE         !  颠倒节点选择，因而当前节点集中没有任何属于活单元的节点
  D,ALL,ALL          !  对不属于活单元的节点施加约束

由于约束是施加在与活单元无关的节点上，求解时就相当于对结构没有任何约束，于是结构就飞向远方了。