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: >H]|R }h
FINI C'joJEo
/CLEAR 9_%??@^>
t8 ~isuiK
/filname,pile-soil contact p$XvVzW#<
/title,pile Tnnj8I1v
!/config,nres,2000000 >#5jO9
/units,si !国际单位制 R, UYwI
!<0 `c
fe=0.1 !摩擦系数 '=ydU+X
fkn=10 !法向接触刚度 >ZnnGX6$(
fkt=3!切向接触刚度 R'B-$:u
ftoln=1 !初始渗透因子 *HQ>tvUh
fact=2!静动摩擦系数 iz6+jHu'l
:LTjV"f
/prep7 AK$i0Rn;pm
>ti)m >f
et,1,solid45 4 :M}Vz-
!=v d:,
mp,ex,1,7.2e10 !桩的弹性模量,根据管壁厚度折算 xL!@$;J
mp,nuxy,1,0.3 !桩的泊松比 F%:o6mT
mp,dens,1,2000 !桩的密度
4{D^ 4G
!mp,mu,1,fe !桩体性质 Y]"lcr}
-^$IjK-N
mp,ex,2,2e8 !土的弹性模量,经验取值 %u*HNo
mp,nuxy,2,0.3 !土的泊松比 f2i9UZ$=e!
mp,dens,2,2000 !土的饱和密度 207h$a,
tb,dp,2 wF{M"$am
tbdata,1,0,30 !粘聚力c为0,摩擦角为30 U%aDkC+M
-dH]_
!创建桩模型 3\a VZx!
cylind,0,0.1,-0.1,7.1,0,90 TA!6|)BUW
!创建土体模型 F<Z13]|
cylind,0.1,0.6,0,7,0,90 ZtOv'nTD
cIXqnb
!桩体划分网格 D4U<Rn6N_5
allsel,all f(*iagEy
vsel,s,,,1 1<pb=H
aslv,s X->` ~-aj
lsla,s C=P}@| K
lesize,1,,,6 0
TOw4pC
lesize,2,,,6 NxN~"bfh
lesize,3,,,6 I\$?'q>
lesize,4,,,6 Ihx[S!:
lesize,5,,,6 }ykc
AK3U
lesize,6,,,6 fI-f Gx
lesize,7,0.05 ePiZHqIsv/
lesize,8,0.05 W$Z8AZ{E
lesize,9,0.05 G,,f' >
type,1 p1
mY!&e(
mat,1 #c`/ f6z
mshape,0,3d y6 gaoj
mshkey,1 UkM#uKr:
vmesh,all *~8g:;u
MZdj!(hO
vsel,s,,,2 !土层,划分网格 Xrzpn&Y=#
vplot lLNI5C
aslv,s +pbP;zu
lsla,s Q`z2SYz>
lplot Z>ztFU
lesize,10,,,6 FdS'0#$
lesize,11,,,6 [lE^0_+
lesize,12,,,6 QTjnXg?Ri
lesize,13,,,6 (4FZK7Fm
lesize,14,,,6 %H=^U8WB
lesize,15,,,6 F2dwT
lesize,16,,,6 ;H"OZRQ
lesize,17,,,6 Bh()?{q
lesize,18,0.05 *I`Eb7
^
lesize,19,0.05 X9ec*x
lesize,20,0.05 a#+;BH1
lesize,21,0.05 P&AaD!Qn
type,1 -;GB Xq
mat,2 1A N)%
mshape,0,3d ``Rg0o
mshkey,1 ^'4I%L"
vmesh,all X92I==-w
o>yo9n%t
!创建接触对 P7;q^jlB
!用接触向导建立接触对 s~g]`/h$r
allsel `k3sl
0z%
et,2,170 oX?~
et,3,173 J&;' gT
r,1 +@anYtv%7
real,1 4&H&zST//m
keyopt,3,9,0 !消除初始渗透 ^*WO*f>y
keyopt,3,12,2 !不分开接触,允许滑动,法向不分开 Q57Z~EsF
$A>]lLo0
桩侧,建立目标面 gflO0$i
r,1,,,fkn,ftoln, , , ky[ ^uQ>0
rmore,,,,,,fkt /@6T~XY M
RMORE,,,, ,, ^aY,Wq
RMORE,,,fact,,, ^fti<Lw5
mp,mu,3,fe T_<:
%wIb@km
!创建接触对 >S:+&VN`M
vsel,s,,,1 aY\(R02B
asel,s,,,3 &M2fcw?
aplot }Hb_8P
cm,target,area ,ydn]0SS
type,2 ? 1Uq ud
real,1 C.+:FY.H
mat,3 HLl"=m1/>
nsla,s,1 =${ImMwj
esurf,all r1.OLn?C
esel,s,type,,2 8%^W<.Y
eplot ^fvx2<
/psymb,esys,1 Ej'N!d.
allsel!很重要 JiRfLB
~uEI}z
!定义接触面 -7A2@g
vsel,s,,,2 &5R-bYGW
vplot xWKUti i
asel,s,,,9 %?!TqJT?{
aplot TU?$yNE
cm,contact,area -FQS5Zb.!
type,3 JO\KTWtjO
real,1 9f$3{ g{m
mat,3 ,w7ZsI4:[
nsla,s,1 |}<!O@<|
esurf,all WRN}>]NgQ
esel,s,type,,3 z=DK(b;$z
eplot 2yndna-
/psymb,esys,1 ux>LciNq
allsel r+}<]?aT>-
save XI;F=r}'
?,FL"ye
!侧面施加对称约束 G3de<?K.[V
allsel dlc'=M
CSYS,0 !9EbG
asel,s,loc,x,0 'o-J)+oa
da,all,symm j4Y] 8
asel,s,loc,y,0 BmCBC,j<v>
da,all,symm XC\'8hL:
=<z~OE'lV
allsel,all KZwzQ" Hl
!asel,s,,,2!桩顶面2未约束 qF4DX$$<
!da,all,all #L xfE<^
asel,s,,,6 n16TQe"8
da,all,ALL +!<{80w
!约束外侧面 <`*v/D7\02
asel,S,,,8 n|!O .+\b
NSLA,S,1 t++\&!F
CSYS,1 l u V_
NROTAT,ALL ^j]"5@f
D,ALL,UX zl["}I(*n
ALLSEL .;NoKO7)
SAVE zjwo"6c>
finish!接触对定义结束 q@iZo,Yk
!求解过程 T2i\S9X
/solu $ 7uxReFZR
tq5o
!约束结束! a|@1RH>7H
!定义荷载步 jp+#N
pH
!第一步荷载,重力荷载。 kl9<l*
acel,0,0,9.8 pt8#cU\
nlgeom,on ! 打开大变形选项 jX
6+~
autot,on ! 打开自动时间步 f{f|frs
time,1 }7/Ob)O
nsub,10 Y# ?M%I%j
outres,all,all /lN09j
allsel \DRYqLT`
SOLVE 4L[-[{2
!第二部荷载,拉动桩 w0$l3^}z
nsubst,100,500,5 C~:!WRCz
outres,all,all wfc+E9E
time,101 Op:7EdT#
nlgeom,on ! 打开大变形选项 g;<_GL
autot,on ! 打开自动时间步 !FJ_\UST0
nsel,s,loc,z,7.1 h_ J|uu
D,ALL,UZ,0.1 y{1|@?ii
b. oA}XP
lnsrch,on !自动线性搜索 [bJAh ` I
pred,on !打开预测求解器 8??%H7~
d#wK
allsel SZ"^>}zl=
SOLVE