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: WOeLn[
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/CLEAR ;l < amB
IEkbVIA(
/filname,pile-soil contact [;:ocy
/title,pile E4.A$/s8[
!/config,nres,2000000 YZ<5-C
/units,si !国际单位制 ^![7X'!;pt
#P!M"_z
fe=0.1 !摩擦系数 /,$V/q+
fkn=10 !法向接触刚度 )}_}D+2
fkt=3!切向接触刚度 muFWFq&yP
ftoln=1 !初始渗透因子 4TiHh
fact=2!静动摩擦系数 t9lf=+%s
V<PH5'^$j
/prep7 iVmy|ewd
;.R)
uCd{=
et,1,solid45 0|=y#`;,Z
'bg'^PN>z
mp,ex,1,7.2e10 !桩的弹性模量,根据管壁厚度折算 s8';4z
mp,nuxy,1,0.3 !桩的泊松比 K;w]sN+I
mp,dens,1,2000 !桩的密度 `v2Xp3o4f
!mp,mu,1,fe !桩体性质 Jv]$@>#
ztp2j%'
mp,ex,2,2e8 !土的弹性模量,经验取值 QWC C
mp,nuxy,2,0.3 !土的泊松比 ;!3: 3;
mp,dens,2,2000 !土的饱和密度 l=$?#^^ /
tb,dp,2 [ThAvQ_$
tbdata,1,0,30 !粘聚力c为0,摩擦角为30 'coY`B; 8
iYlkc
!创建桩模型 giesof
cylind,0,0.1,-0.1,7.1,0,90 l$R9c+L=
!创建土体模型 lWP]}Uy=5~
cylind,0.1,0.6,0,7,0,90 g{2~G6%;0
u1.0-Y?
!桩体划分网格 %8YUK/(|n
allsel,all ?papk4w
vsel,s,,,1 Q`-Xx
aslv,s S&J5QZjC
lsla,s ~JS@$ #
lesize,1,,,6 S{{wcH$n'i
lesize,2,,,6 xjrL@LO#
lesize,3,,,6 |PGTP#O<
lesize,4,,,6 3 `NSSS
lesize,5,,,6 n +2>jY
lesize,6,,,6 9}a&:QTHR
lesize,7,0.05 8-@HzS%
lesize,8,0.05 ]U}B~Y
lesize,9,0.05 g\iSc~%?
type,1 |nqN95'u+]
mat,1 =gZA9@]W2
mshape,0,3d ,TYFPulYcp
mshkey,1 r!|h3*YA
vmesh,all nmyDGuzk
38:5g_
vsel,s,,,2 !土层,划分网格 vRDs~'f
vplot -uhVw_qq#
aslv,s \H1t<B,
lsla,s $)6M@S
lplot \pP1k.~UnC
lesize,10,,,6 nu2m5RYx
lesize,11,,,6 Q6N?cQtOT
lesize,12,,,6 *,=8x\Shp
lesize,13,,,6 x]4>f[>*>
lesize,14,,,6 /R>YDout}
lesize,15,,,6 ]a[2QQ+g
lesize,16,,,6 Ua~8DdW
lesize,17,,,6 9eR";Wm])
lesize,18,0.05 v0T?c53?
lesize,19,0.05 DwWm(8&6;}
lesize,20,0.05 / neY2D6
lesize,21,0.05 =CjWPZShV
type,1 h*3{IHAQ
mat,2 ^E~1%Md.
mshape,0,3d Deq@T {
mshkey,1 Kp;a(D
vmesh,all 9XUk.Nek
`f<w+u
!创建接触对 V`1x![\
!用接触向导建立接触对 $P2*qpqy
allsel NH*"AE;
et,2,170 2~vvE
et,3,173 vjA!+_I6
r,1 BQs\!~Ux2
real,1 /fU-0a8
keyopt,3,9,0 !消除初始渗透 [lu+"V,<LJ
keyopt,3,12,2 !不分开接触,允许滑动,法向不分开 uWP0(6 %
cxx8I
桩侧,建立目标面 @3~Wukc
r,1,,,fkn,ftoln, , , Y3-f68*(
rmore,,,,,,fkt "_=t1UE
RMORE,,,, ,, 1{1mL-I;
RMORE,,,fact,,, KUUZN
mp,mu,3,fe ^
q3H
B$7Cjv
!创建接触对 ~aXJ5sY"f&
vsel,s,,,1 05
.EI)7
asel,s,,,3 j9-.bGtm?.
aplot ]3Jb$Q@
cm,target,area Tr;&bX5]H
type,2 ,| j\x
real,1 E!>MJlA:k6
mat,3 Jid_&\
nsla,s,1 +"|TPKas
esurf,all 2Zg%4/u,Zp
esel,s,type,,2 _x$\E
eplot ]LMtZUz
/psymb,esys,1 HYZp=*eb
allsel!很重要 ofs Lx6Po
o|_9%o52'
!定义接触面 (nYGN$qC9
vsel,s,,,2 Xo6zeLHO
vplot by$mD_sr
asel,s,,,9 y I[kaH"J
aplot n]>L"D,
cm,contact,area 6_:KFqc W
type,3 mcs!A/]<
real,1 Digx#'#jf
mat,3 Ri*mu*r\}
nsla,s,1 p4$4;)
esurf,all _:Jma
esel,s,type,,3 Z2-"NB
eplot j%':M
/psymb,esys,1 }C$D-fH8sW
allsel N Ff`V
save Q@"!uB.e
xhB-gG=
!侧面施加对称约束 Pjq()\/[Z
allsel \KKE&3=
CSYS,0 q2;CvoF
asel,s,loc,x,0 A-h[vP!v|
da,all,symm o)'06FF\$
asel,s,loc,y,0 )q[Wzx_ j<
da,all,symm <L2z| %`
]H<}6}Gd
allsel,all *q@3yB}
!asel,s,,,2!桩顶面2未约束 >x
]{cb/m
!da,all,all cqcH1aSv
asel,s,,,6 O>9-iqP>`d
da,all,ALL :w7?]y6~S
!约束外侧面 i1 GQ=@
asel,S,,,8 <)"2rxX&5
NSLA,S,1 MVEh<_
CSYS,1 P!{J28dj
NROTAT,ALL Bp4#"y2
D,ALL,UX }{[JS=A^
ALLSEL |lyspD
SAVE "
^!=e72
finish!接触对定义结束 %UG|R:
!求解过程 =>O{hT^F
/solu Dw,LB>Eq,
:z\||f
!约束结束! hb>uHUb&
!定义荷载步 *g4Uo{
!第一步荷载,重力荷载。 {J/+KK
acel,0,0,9.8 ~RV9'v4
nlgeom,on ! 打开大变形选项 yvnvI y
autot,on ! 打开自动时间步 2<d'!cm
time,1 q3|SZoN
nsub,10 \)2'+R
outres,all,all l .m #
allsel kc2
8Q2
SOLVE 7>EMr}f C
!第二部荷载,拉动桩 Wxi;Tq9C@_
nsubst,100,500,5 8[a N5M]
outres,all,all jPg[LZQ'
time,101 _j~y;R)
nlgeom,on ! 打开大变形选项 c57`mOe/b
autot,on ! 打开自动时间步 B|=S-5pv*
nsel,s,loc,z,7.1 ]#r Nz"
D,ALL,UZ,0.1 7(H?3)%0
V h5\'Sn
lnsrch,on !自动线性搜索 4% 6@MQ[
pred,on !打开预测求解器 _6]tbni?v
\JP9lJ3<
allsel 8rNf4]5@X(
SOLVE