大家好,我做的是一个桩土接触分析问题,想把一个桩从土中拔出,施加两个荷载步,第一步,施加重力荷载,第二步把桩从中拔出,在运行第二步时出了问题,算不下去,请大师不吝指教 ,不胜感激。命令流如下: o}mhy`}
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/CLEAR =0s`4Y"+
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/filname,pile-soil contact AF*ni~
/title,pile Bt*&L[&57
!/config,nres,2000000 Sr ztTfY
/units,si !国际单位制 s]F?=yEp
,);=
(r9
fe=0.1 !摩擦系数 Ypn%[sSOp
fkn=10 !法向接触刚度 q#Yg0w~
fkt=3!切向接触刚度 8"?Vcw&
ftoln=1 !初始渗透因子 2rR@2Vsw2
fact=2!静动摩擦系数 x%IXwP0
SmT+L,:D
/prep7 %S
>xSqX
=9DhO7I'
et,1,solid45 |z!q
r}i
!~lVv&YO
mp,ex,1,7.2e10 !桩的弹性模量,根据管壁厚度折算 tf$PaA
mp,nuxy,1,0.3 !桩的泊松比 Ad}-I%Ie
mp,dens,1,2000 !桩的密度 f H#F"^A
!mp,mu,1,fe !桩体性质 a2cx
IL+#ynC
mp,ex,2,2e8 !土的弹性模量,经验取值 IKMsY5i
mp,nuxy,2,0.3 !土的泊松比 @MN}^umx`
mp,dens,2,2000 !土的饱和密度 a gmeiJT
tb,dp,2 YiIddQ
tbdata,1,0,30 !粘聚力c为0,摩擦角为30 $n=W2WJ6f
EFa{O`_@U
!创建桩模型 dAYI D E
cylind,0,0.1,-0.1,7.1,0,90 >~`Y
!创建土体模型 g^s+C Z
cylind,0.1,0.6,0,7,0,90 /32Ta
l]a^"4L4`o
!桩体划分网格 8F O1`%8Oe
allsel,all &57qjA,8<
vsel,s,,,1 Ek"YM[
aslv,s -vv
lsla,s nu4Pc
lesize,1,,,6 ax-=n (
lesize,2,,,6 lEO?kn.:z
lesize,3,,,6 SjZd0H0
lesize,4,,,6 T$gkq>!j<E
lesize,5,,,6 J>f
/u:.
lesize,6,,,6 +
$k07mb\
lesize,7,0.05 pj!k|F9
lesize,8,0.05 ,3w I~j=
lesize,9,0.05 QT`fix{
type,1 [WcS[](ob
mat,1 3mpP|b"
mshape,0,3d '4af
],
mshkey,1 c_~XL^B@
vmesh,all EG F:xl
er(8}]X8Q
vsel,s,,,2 !土层,划分网格 ,$HHaoog
vplot -(6eVI
aslv,s X tJswxw`K
lsla,s !Bag}|#
lplot n
(OjjRm
lesize,10,,,6 j FgZ}Xp
lesize,11,,,6 9U!JK3d
lesize,12,,,6 ,)Yao;Cvd
lesize,13,,,6 y' 2<qj
lesize,14,,,6 6o$Z0mG
lesize,15,,,6 ^it4z gx@
lesize,16,,,6 `ffj8U
lesize,17,,,6 x*:n4FZ7b
lesize,18,0.05 +nU' ,E
lesize,19,0.05 -s{R/ 6:
lesize,20,0.05 wG_4$kyj
lesize,21,0.05 cB{%u
'
type,1 Y3D3.T6Q
mat,2 ymHKcQ
mshape,0,3d a a4$'8s
mshkey,1 #1MKEfv(~
vmesh,all ;F|jG}M"
BeAk21xb
!创建接触对 3QH(4N
!用接触向导建立接触对 i"/ r)>"b
allsel 2K
Pqu:lv
et,2,170 o\d |CE;>
et,3,173 {>S4#^@}
r,1
1U
real,1 QI.t&sCh5
keyopt,3,9,0 !消除初始渗透 VZ;@S3TS
keyopt,3,12,2 !不分开接触,允许滑动,法向不分开 x 96}#0'
Lg8]dBXu
桩侧,建立目标面 Ec+22X
r,1,,,fkn,ftoln, , , #sL/y
rmore,,,,,,fkt -H4PRCDH
RMORE,,,, ,, n>n"{!
RMORE,,,fact,,, ^Wf
S\M`
mp,mu,3,fe vXc!Zg~
av$
!创建接触对 O(odNQy~
vsel,s,,,1 qv.n9 9?]
asel,s,,,3 ZH% we
aplot hUBF/4s\
cm,target,area 8*vFdoE_oO
type,2 :|=- (z
real,1 L+7*NaPY*
mat,3 m.!wsw
nsla,s,1 @$Yb#$/
esurf,all !f@XDW&R
esel,s,type,,2 m!;G/s*
eplot 'w:bs!
/psymb,esys,1 c+H)ed>
allsel!很重要 !h?=Wv
==]
&h\7^=s.
!定义接触面 2av*o~|J*:
vsel,s,,,2 `6UtxJSx
vplot L -YNz0A
asel,s,,,9 5 1"8Py
aplot E_]k>bf\
cm,contact,area h+5@I%WX
type,3 / xs9.w8-
real,1 %iX/y
mat,3 %TDXF_.[
nsla,s,1
A=0@UqM
esurf,all 7r['
esel,s,type,,3 \x(.d.l/
eplot 9Eu #lV
/psymb,esys,1 /-><k,mL?
allsel zPHy2H$28
save /e .D/;]
t GC2
^a#~
!侧面施加对称约束 d[S#Duz<&
allsel YQ+^
CSYS,0 y)tYSTJK
asel,s,loc,x,0 V'C-'Ythwf
da,all,symm Ajg\aof0{
asel,s,loc,y,0 (U _wp's
da,all,symm LfHzT<)|
?|lI Xz
allsel,all %2}C'MqS
!asel,s,,,2!桩顶面2未约束 bb}?h]a
!da,all,all 8ZW?|-i
asel,s,,,6 $HxS:3D%D
da,all,ALL i+1Qf
!约束外侧面 &>g~-s
asel,S,,,8 zA,/@/'(
NSLA,S,1 S*xhX1yUi
CSYS,1 )@_ugW-j
NROTAT,ALL O2% ` 2h
D,ALL,UX A=y"x$%-_
ALLSEL dqxd3,Z
SAVE nc&Jmo7
finish!接触对定义结束 MUB37
!求解过程 DFc [z"[
/solu N ocFvF7\
nPOO3!<{
!约束结束! |AC6sfA+
!定义荷载步 ^aHh{BQ%
!第一步荷载,重力荷载。 uOre,AQR
acel,0,0,9.8 Y1WHy*s?
nlgeom,on ! 打开大变形选项 pqH4w(;
autot,on ! 打开自动时间步 6rT4iC3Q{
time,1 wFb@1ae\
nsub,10 GG+5/hU
outres,all,all ;NP[_2|-,
allsel Fg4@On[,i
SOLVE vd(dNu&,<
!第二部荷载,拉动桩 Zih ?Bm
nsubst,100,500,5 :3 y_mf>
outres,all,all ,Bf(r
time,101 "wINBya'M
nlgeom,on ! 打开大变形选项 LipxAE?O
autot,on ! 打开自动时间步 jtCZfFD?
nsel,s,loc,z,7.1 `|?]CkP
D,ALL,UZ,0.1 8YKQItK
)
$#(ZL^m
lnsrch,on !自动线性搜索 r0{]5JZt/
pred,on !打开预测求解器 Z/7dg-$?'0
yd*3)6=
allsel 4.'JLArw
SOLVE