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: 7zOhyl?
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/CLEAR &
8ccrw
u![4=w
/filname,pile-soil contact 37J\i ]
/title,pile UEN YJ*tnP
!/config,nres,2000000 #"=%b
e3
/units,si !国际单位制 "1_{c *ck
"ugX
/r$_
fe=0.1 !摩擦系数 un.G6| S
fkn=10 !法向接触刚度 >|v=Ba6R0
fkt=3!切向接触刚度 (r.$%[,.<
ftoln=1 !初始渗透因子 b$;HI7)/K
fact=2!静动摩擦系数 2qt=jz\s
z\X60T
/prep7 nrxjN(9V%+
ac2}3$u
et,1,solid45 l
:f9Ih
Kh>?!`lL
mp,ex,1,7.2e10 !桩的弹性模量,根据管壁厚度折算 9m%7dsv
mp,nuxy,1,0.3 !桩的泊松比 %{N>c:2I$
mp,dens,1,2000 !桩的密度 $ijx#a&O
!mp,mu,1,fe !桩体性质 Wpiv1GZ%c8
/E=h{|
mp,ex,2,2e8 !土的弹性模量,经验取值 nwZ[Ygl|
mp,nuxy,2,0.3 !土的泊松比 P}ehNt*($
mp,dens,2,2000 !土的饱和密度 OI)&vQ5k
tb,dp,2 ;m-6.AV
tbdata,1,0,30 !粘聚力c为0,摩擦角为30 e-nWD
SIKk|I)
!创建桩模型 I@8+k&nXS
cylind,0,0.1,-0.1,7.1,0,90 bx+(.F
!创建土体模型 gubb .EY
cylind,0.1,0.6,0,7,0,90 '?&B5C
8Uj68Jl?
!桩体划分网格 ^G]KE8
allsel,all c@0l-R{q
vsel,s,,,1 v 1`bDS?*Q
aslv,s g_3rEvf"4
lsla,s jEC'l]l
lesize,1,,,6 BsoFQw4$9
lesize,2,,,6 FE$M[^1_
lesize,3,,,6 eyI-s9#t
lesize,4,,,6 ?7rmwy\
lesize,5,,,6 |NphG|
lesize,6,,,6 Vvxc8v:
lesize,7,0.05 `DU'wB
lesize,8,0.05 eukX#0/^
lesize,9,0.05 nOA,x
type,1 YHwVj?6W
mat,1 TMnT#ypf<5
mshape,0,3d &-EyM*:u!
mshkey,1 F9>(W#aC
vmesh,all ;j[q?^ b
IqR[&T)lj
vsel,s,,,2 !土层,划分网格 RW|UQY#
vplot DzX6U[=
aslv,s e8WPV
lsla,s -jcrXskb&N
lplot hW*^1%1
lesize,10,,,6 `Gy>tD.#V-
lesize,11,,,6 rRF+\cP?.
lesize,12,,,6 \?5[RR
lesize,13,,,6 +oxqS&$L
lesize,14,,,6 pn ~/!y
lesize,15,,,6 8EW`*+%=
lesize,16,,,6 ~|$) 1
lesize,17,,,6 vZ1D3ytfG
lesize,18,0.05 q\{;_?a
lesize,19,0.05 'tq\<y
lesize,20,0.05 H4K(SGx
lesize,21,0.05 4nVO.Ud0$X
type,1 XY$cx~
mat,2 .{-iq(3
mshape,0,3d |r<.R>
mshkey,1 W2X+NacD
vmesh,all vl#V-UW$4P
RN cI]oJ
!创建接触对 ul5::
!用接触向导建立接触对 |zr)hC
allsel .q'FSEkMJ
et,2,170 \k$]GK-
et,3,173 B8BY3~}]
r,1 y7}~T!UyfF
real,1 gvwCoCbb
keyopt,3,9,0 !消除初始渗透 %o SfL;W7
keyopt,3,12,2 !不分开接触,允许滑动,法向不分开 Q
xj|lr
Hsux>+Q
桩侧,建立目标面
t`&s
r,1,,,fkn,ftoln, , , !Cv<>_N).
rmore,,,,,,fkt | eVTxeq
RMORE,,,, ,, Cbf,X[u
RMORE,,,fact,,, =:0IHyB#0
mp,mu,3,fe e2VL/>y`
U8.0 L
!创建接触对 i >/@]2
vsel,s,,,1 ,rvZW}=
asel,s,,,3 ":ws~Zep
aplot }gi`?58J6
cm,target,area 9Rt(G_'
type,2 G1n>@Y'j''
real,1 +$pO
mat,3 l*V72!Mv
nsla,s,1 CsQ}P)
esurf,all Xf'
esel,s,type,,2 @)M.u3{\
eplot H]]>sE
/psymb,esys,1 S+E3;' H
allsel!很重要 .jG.90
iaq:5||,
!定义接触面 hF{mm(qyv
vsel,s,,,2 7zOvoQ}
vplot n$\6}\k
asel,s,,,9 E rRMiT
aplot ;tIIEc
cm,contact,area h^3Vd K,
type,3 DQHGq_unP
real,1 GQc%OQc\
mat,3 W0C$*oe!_i
nsla,s,1 fe]T9EDA
esurf,all ^dp[Z,[1z
esel,s,type,,3 nh_xbo5L[
eplot O'?lW~CD.>
/psymb,esys,1 *Sp O|*'
allsel /(}l[jf
save epm8N /
rH9|JEz
!侧面施加对称约束 ?)ZLxLV::
allsel PeR<FSF ,i
CSYS,0 ]`+"o[
asel,s,loc,x,0 Ub-k<]yZ
da,all,symm lVKF^-i
asel,s,loc,y,0 boHm1hPKS
da,all,symm TuT=
1,sO =p)Yg
allsel,all r;s3(@[,@
!asel,s,,,2!桩顶面2未约束 dIe 6:s
!da,all,all Z_TbM^N
asel,s,,,6 P|QnZ){
da,all,ALL k@X
As
!约束外侧面 A 5\"e^>
asel,S,,,8 os0"haOI9h
NSLA,S,1 s</ktPtu
CSYS,1 fTnyCaB
NROTAT,ALL S&g-
D,ALL,UX ?_`P;}4#
ALLSEL 75cr!+
SAVE 4iB)oR
finish!接触对定义结束 Vf* B1Zb
!求解过程 % w/1Uo24
/solu 9hi(P*%q
b+fy&rk@-
!约束结束! Sr-^faL
!定义荷载步 ;jfXU_K
!第一步荷载,重力荷载。 kO O~%|1CP
acel,0,0,9.8 ' [M2Q"X
nlgeom,on ! 打开大变形选项 xo@/k
autot,on ! 打开自动时间步 {`SGB;ho
time,1 "gVH;<&]
nsub,10 F_
lj>;}a5
outres,all,all N =}Z#
allsel SOY#, Zu
SOLVE 7UnO/K7oB.
!第二部荷载,拉动桩 G7#~=W
2M
nsubst,100,500,5 Vam8NnZ|r
outres,all,all t7&
GCZ
time,101 }z%/6`7)|
nlgeom,on ! 打开大变形选项 MhXm-<4
autot,on ! 打开自动时间步 5+PBS)pJ]%
nsel,s,loc,z,7.1 uaMm iR
D,ALL,UZ,0.1 uTFEI.N
3xR#,22:}
lnsrch,on !自动线性搜索 9n2%7dLQ*
pred,on !打开预测求解器 ,}$x'8v
j;c^pLUP
allsel YRX2^v ^[
SOLVE