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kakaqun

新虫 (小有名气)

[求助] ansys模拟桩土的2d拉拔塑性区问题

采用接触分析,但为何塑性区集中一部分,而不是一个贯通的区域。请大神给我点思路建议~~很急很关键,谢谢了

ansys模拟桩土的2d拉拔塑性区问题
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kakaqun

新虫 (小有名气)

引用回帖:
5楼: Originally posted by ww_lai at 2016-01-11 19:17:10
请问下,你可以帮我解决下这个问题吗
1.一般工程勘察里面给出的土的压缩模量,压缩模量与变形模量之间有一个转换公式,而弹性模量的取值,往往说法不一,在网上找的资料有的说弹性模量取的是压缩模量的2-5倍,但是 ...

我用的就是弹性模量,不是压缩模量
6楼2016-01-11 19:54:28
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刘风云

禁虫 (小有名气)

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2楼2016-01-10 07:27:44
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kakaqun

新虫 (小有名气)

引用回帖:
2楼: Originally posted by 刘风云 at 2016-01-10 07:27:44
deform模拟多简单啊

您能给我看一下命令吗,我想得到一个贯通的塑性区,初学阶段才疏学浅,始终办不到,拜托了
finish
/clear
/PREP7
! KeyPoints
K,2,0.03,0
K,259,3.70E-02,-1.9E-02
K,260,3.68E-02,-1.73736000000001E-02
K,261,3.66999999998281E-02,-1.64644499999999E-02
K,262,3.66999999998281E-02,-1.56550500000001E-02
K,263,3.68E-02,-.0147573
K,264,.0367,-1.17477000000001E-02
K,265,.0366,-1.05079499999999E-02
K,266,.0367,-8.38755000000015E-03
K,267,3.7E-02,-7.24755000000005E-03
K,268,3.73E-02,-.0056259
K,269,3.79E-02,-2.73029999999994E-03
K,270,3.82E-02,-8.32200000000057E-04
K,272,.1,0
K,273,.1,-1.9E-02
K,274,0.03,-1.9E-02
K,282,3.82E-02,0

K,159,3.70E-02,-1.9E-02
K,160,3.68E-02,-1.73736000000001E-02
K,161,3.66999999998281E-02,-1.64644499999999E-02
K,162,3.66999999998281E-02,-1.56550500000001E-02
K,163,3.68E-02,-.0147573
K,164,.0367,-1.17477000000001E-02
K,165,.0366,-1.05079499999999E-02
K,166,.0367,-8.38755000000015E-03
K,167,3.7E-02,-7.24755000000005E-03
K,168,3.73E-02,-.0056259
K,169,3.79E-02,-2.73029999999994E-03
K,170,3.82E-02,-8.32200000000057E-04
K,182,3.82E-02,0
LSTR, 260, 259
LSTR, 261, 260
LSTR, 262, 261
LSTR, 263, 262
LSTR, 264, 263
LSTR, 265, 264
LSTR, 266, 265
LSTR, 267, 266
LSTR, 268, 267
LSTR, 269, 268
LSTR, 270, 269
LSTR, 282, 270
LSTR, 282,2
LSTR, 274,2
LSTR, 273,272
LSTR, 274,259


LSTR, 160, 159
LSTR, 161, 160
LSTR, 162, 161
LSTR, 163, 162
LSTR, 164, 163
LSTR, 165, 164
LSTR, 166, 165
LSTR, 167, 166
LSTR, 168, 167
LSTR, 169, 168
LSTR, 170, 169
LSTR, 182, 170
LSTR, 182, 272
LSTR, 273,159
allsel,all,all
LSEL,S,LINE,,1,12
LCOMB,ALL
ALLSEL,ALL
LSEL,S,LINE,,17,28
LCOMB,ALL
ALLSEL,ALL
numcmp,all
ALLSEL,ALL
k,9,3.70E-02,-0.6000000   
k,10,3.82E-02,0.300000
k,11,0.6,-0.6000000   
k,12,0.6,0.300000
LSTR, 9,2
LSTR, 10,3
LSTR, 10,12
LSTR, 12,11
LSTR, 9,11
allsel,all,all
a,2,3,5,6
a,7,1,8,4

lsel,S,line,,7,13
lsel,a,line,,4
cm,YUTI,line   
al,YUTI

!土体参数
E_1=10E6
U_1=0.35
DENS_1=1900
C_1=30E3
FI_1=12
DFI_1=6
MP,EX,1,E_1
MP,PRXY,1,U_1
MP,DENS,1,DENS_1
TB,DP,1
TBDATA,1,C_1,FI_1,DFI_1
MP,MU,1,0.2
!锚固体参数
E_2=30E10
U_2=0.2
DENS_2=2500
MP,EX,2,E_2
MP,PRXY,2,U_2
MP,DENS,2,DENS_2

ET,1,82
KEYOPT,1,3,1
ET,3,targe169
ET,4,conta172
KEYOPT,4,3,1
KEYOPT,4,10,2
KEYOPT,4,8,2
keyopt,4,12,2
!界面层接触面实常数
R,6
lsel,s,line,,1,6,5
LESIZE,ALL,,,100
lsel,s,line,,2,5
LESIZE,ALL,,,15
lsel,s,line,,7
LESIZE,ALL,,,60,2
lsel,s,line,,8
LESIZE,ALL,,,60,0.5
lsel,s,line,,9
LESIZE,ALL,,,100,0.05
lsel,s,line,,10
LESIZE,ALL,,,80,0.05
lsel,s,line,,11,13
LESIZE,ALL,,,50

ASEL,S,AREA,,1
AATT,1,,1
mshkey,0
mshape,1,2D
AMESH,ALL

ASEL,S,AREA,,2
AATT,2,,1
mshkey,0
mshape,1,2D
AMESH,ALL

ASEL,S,AREA,,3
AATT,1,,1
mshkey,0
mshape,1,2D
AMESH,ALL
allsel,all,all

!创建目标面(锚固体)
lsel,s,line,,1
nsll,s,1
esln,s,0
type,3
real,6
mat,2
esurf
allsel,all,all

!创建接触面(界面层)
lsel,s,line,,6
nsll,s,1
esln,s,0
type,4
real,6
mat,1
esurf
allsel,all,all

LSEL,S,LINE,,11,13,2
NSLL,S
D,ALL,Uy

LSEL,S,LINE,,12
NSLL,S
D,ALL,Ux

LSEL,s,,,2
NSLL,S
SF,all,PRES,-4e4
LSEL,s,,,3
NSLL,S
SF,all,PRES,1e4
allsel,all,all
/solu
antype,static      
nlgeom,on         
autots,on

time,1
NSUBST,200
OUTRES,ALL,ALL
NROPT,full,,off
NROPT,unsym,,off
solve

allsel,all,all
ASEL,S,AREA,,1,2
ESLA,S
3楼2016-01-10 09:08:49
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ww_lai

新虫 (正式写手)

请问下,你可以帮我解决下这个问题吗
1.一般工程勘察里面给出的土的压缩模量,压缩模量与变形模量之间有一个转换公式,而弹性模量的取值,往往说法不一,在网上找的资料有的说弹性模量取的是压缩模量的2-5倍,但是又不确定。
2. 在(ANSYS用于模拟上部结构与地基基础作用中土的弹性模量的影响)这个文章中,提到说在土与基础共同作用分析中,弹性模量就是变形模量; 在这个资料里http://wenku.baidu.com/view/1b2bd3ea6294dd88d0d26bfc.html  也说到,"在很多数值模拟软件中,除非特别说明,一般说的弹性模量均指变形模量,即土体在无侧限的条件下的弹性模量。 "  请问下,到底ansys中输入的是土的变形模量还是弹性模量呢??
5楼2016-01-11 19:17:10
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