岩土接触分析实例

发布日期:[08-12-04 12:36:29] 浏览人次:[]

例子1是为了获得初始应力,计算可以完成。命令流为:
!以便获得初始应力,收敛!!考虑土与岩石之间的摩擦,点面接触
fini !考虑土体的相互作用。自由划分网格,局部细化,不收敛!!!!!!!!!!!
/cle
/filname,diji11
/title,地基应力、应变的分布规律
/units,si
/PREP7
!ET,1,PLANE2
ET,1,PLANE42
KEYOPT,1,3,2
KEYOPT,1,5,0
KEYOPT,1,6,0
MP,EX,1,8e9 !岩石性质
MP,PRXY,1,0.29
MP,DENS,1,2600

MP,EX,2,5.0e7 !风化槽土体性质?
MP,PRXY,2,0.25
TB,dp,2
TBDATA,1,15e3,20,0
MP,DENS,2,2000

et,2,contac48,,,1
mp,mu,3,2.5
r,1,5.0e7,5.0e6,0.01,1.0,0.001,0.001
r,2,5.0e7,5.0e6,0.01,1.0,0.001,0.001
K,1,0,0,0,
K,2,2.5,-12,0,
K,3,6.5,-12,0,
K,4,13.5,-26.5,0,
K,5,20,-30,0,
K,6,24.5,-27,0,
K,7,31.5,-12,0
K,8,35.5,-12,0,
K,9,38,0,0,
k,10,-40,0,0,
k,11,-40,-60,0,
k,12,80,-60,0,
k,13,80,0,0,
K,14,6.5,-12,0,
K,15,13.5,-26.5,0,
K,16,20,-30,0,
K,17,24.5,-27,0,
K,18,31.5,-12,0

*do,i,1,8
lstr,i,i+1
*enddo
LSTR,1,10

*do,i,10,12
lstr,i,i+1
*enddo
LSTR,13,9

*do,i,14,17
lstr,i,i+1
*enddo
LARC,14,18,16,14.57

FLST,2,13,4
*do,i,1,13
FITEM,2,i
*enddo
AL,P51X

FLST,2,5,4
*do,i,14,18
FITEM,2,i
*enddo
AL,P51X

asel,s,area,,1
aatt,1,,1
asel,s,area,,2
aatt,2,,1
esize,4
asel,all
amesh,all

lsel,s,line,,3,4,1
nsll,s,1
CM,_TARGET1,node
lsel,s,line,,14,15,1
nsll,s,1
CM,_CONTACT1,node
lsel,s,line,,5,6,1
nsll,s,1
CM,_TARGET2,node
lsel,s,line,,16,17,1
nsll,s,1
CM,_CONTACT2,node
TYPE,2
mat,3
real,1
gcgen,_CONTACT1,_TARGET1
real,2
gcgen,_CONTACT2,_TARGET2
fini
FINISH

/SOLU
antype,static
nlgeom,on
nropt,full,,off
neqit,40
pred,on
autots,on
time,1
nsubst,100,1000,10
alls
LSEL,s,line,,10,12,2
CM,_Y,LINE
CMSEL,,_Y
DL,_Y, ,ux,0,0
LSEL,s,line,,11
CM,_Y,LINE
CMSEL,,_Y
DL,_Y, ,uy,0,0
alls
acel,,9.8
iswrite,on
lnsrch,on
outres,all,all
solve

例2:

!读入初始应力,收敛!!考虑土和混凝土与岩石之间的摩擦,点面接触
fini !考虑土体和混凝土之间的相互作用。不收敛!!!!!!!!!!!
/cle
/filname,diji
/title,地基应力、应变的分布规律
/units,si
/PREP7
ET,1,PLANE42
KEYOPT,1,3,2
KEYOPT,1,5,0
KEYOPT,1,6,0
MP,EX,1,8e9 !岩石性质
MP,PRXY,1,0.29
MP,DENS,1,2600

MP,EX,2,5.0e7 !风化槽土体性质?
MP,PRXY,2,0.25
TB,dp,2
TBDATA,1,15e3,20,0
MP,DENS,2,2000

MP,EX,3,2.55e10 !混凝土性质
MP,PRXY,3,0.167
MP,DENS,3,2400

et,2,contac48,,,1
mp,mu,4,2.5
mp,mu,5,4.5
mp,mu,6,3.0
r,1,5.0e7,5.0e6,0.01,1.0,0.001,0.001
r,2,5.0e7,5.0e6,0.01,1.0,0.001,0.001
r,3,8.0e9,8.0e8,0.01,1.0,0.001,0.001
r,4,8.0e9,8.0e8,0.01,1.0,0.001,0.001
r,5,5.0e7,5.0e6,0.01,1.0,0.001,0.001

K,1,0,0,0,
K,2,2.5,-12,0,
K,3,6.5,-12,0,
K,4,13.5,-26.5,0,
K,5,20,-30,0,
K,6,24.5,-27,0,
K,7,31.5,-12,0
K,8,35.5,-12,0,
K,9,38,0,0,
k,10,-40,0,0,
k,11,-40,-60,0,
k,12,80,-60,0,
k,13,80,0,0,
K,14,6.5,-12,0,
K,15,13.5,-26.5,0,
K,16,20,-30,0,
K,17,24.5,-27,0,
K,18,31.5,-12,0
K,19,0,0,0,
K,20,2.5,-12,0,
K,21,6.5,-12,0,
K,22,31.5,-12,0
K,23,35.5,-12,0,
K,24,38,0,0,
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本文关键字:岩土  接触  分析  实例
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