paulliuqing 发表于 2008-4-10 16:53

求解时提示应力-应变比值小于设定的弹性模量问题

请教各位大虾！谢谢！命令流如下：

/filename,gh_beam
/title,alalysis of a gh_beam
/prep7
et,1,link8
et,2,solid65
r,1,28.3e-6
r,2,113.1e-6
r,3,314.1e-6
r,4,
mp,ex,1,2.1e11
mp,prxy,1,0.3
tb,bkin,1,1,2,1
tbdata,,2.1e8,0.0
mp,ex,2,2.55e10
mp,prxy,2,0.3
tb,kinh,2,1,8,
tbtemp,0
tbpt,,0.0001,0.936e6
tbpt,,0.0003,2.664e6
tbpt,,0.0006,4.896e6
tbpt,,0.0009,6.696e6
tbpt,,0.0012,8.064e6
tbpt,,0.0016,9.216e6
tbpt,,0.002,9.6e6
tbpt,,0.0033,9.6e6
tb,conc,2,1,9,
tbdata,,0.3,0.55,1.5e6,-1
block,0.0,3.0,0.0,0.4,0.0,-0.2
/view,1,1,2,3
/rep,fast
lplot
/pnum,line,1
/replot
vatt,2,4,2
lsel,s,line,,4,5,1
lsel,a,line,,2,7,5
lesize,all,0.05
lsel,inve
lesize,all,0.025
lsel,all
vmesh,all
nsel,s,loc,x,0.125,0.175
nplot
/view,1,1
/rep,fast
/pnum,node,1
/replot
type,   1
mat,       1
real,      1
*do,i,3349,3354,1
e,i,i+1
*enddo
*do,i,3355,3446,7
e,i,i+7
*enddo
*do,i,3452,3447,-1
e,i+1,i
*enddo
*do,i,3447,3356,-7
e,i,i-7
*enddo
esel,s,type,,1
egen,19,315,all,,,,,,,,0.15,0.0,0.0,
allsel,all
type,   1
mat,      1
real,         2
*do,i,3145,9130,105
e,i,i+105
*enddo
esel,r,real,,2
egen,3,-3,all,,,,,,,,0.0,0.0,-0.075,
allsel,all
type,1
mat,1
real,3
*do,i,3237,9222,105
e,i,i+105
*enddo
esel,r,real,,3
egen,2,6,all,,,,,,,,0.0,0.0,0.15,
allsel,all
esel,s,type,,1
eplot
/view,1,1,2,3
/rep
nsel,s,loc,y,0.19,0.21
nsel,r,loc,x,-0.01,0.01
d,all,all
allsel,all
nsel,s,loc,y,0.19,0.21
nsel,r,loc,x,2.99,3.01
d,all,all
allsel,all
nsel,s,loc,y,0.39,0.41
sf,all,pres,   50000
allsel,all
fini
/solu
antype,0
nlgeom,1
nropt,full,,
eqslv,spar,,0,
time,1.0
autots,1
nsubst,100,200,50,1
kbc,0
cnvtol,u,,0.03,0,,
neqit,50,
pred,on,,on
outres,all,all
solve
fini
/post1
set,last
/dscale,1,100
/replot
pldisp,2
plnsol,u,y,0,1
plcrack,0,0
finish

xuruikl 发表于 2008-4-10 17:24

把你要问的问题描述的清楚一点

aircraft 发表于 2008-4-10 19:24

哪里出问题了?
光贴命令,
大家不好给你帮助.

paulliuqing 发表于 2008-4-11 10:20

前面的建模划分网格都没问题，在进行solve的时候它老是提示说应力-应变比值小于设定的混凝土材料弹性模量E=2.55e10，我尝试了改动，好像还是不行，计算不下去。

paulliuqing 发表于 2008-4-11 13:13

急切等待各位大仙帮忙！！！

xuruikl 发表于 2008-4-11 15:32

混凝土材料弹性模量E=2.55e10
这个怎么这么大？

paulliuqing 发表于 2008-4-14 15:55

为了单位一致，E的单位化为Pa了，所以会有2.55e10

rodge 发表于 2008-4-15 01:08

你所定义的多线性随动强化准则的应力应变曲线，第一个点，应该与定义的弹性模量相对应，即第一个点的应力/应变=弹性模量

[ 本帖最后由 rodge 于 2008-4-15 08:48 编辑 ]

paulliuqing 发表于 2008-4-18 16:01

非常感谢！
SOLVED..

shurong 发表于 2008-5-4 10:14

我也遇到过同样的问题，应力-应变比值小于或大于设定的弹性模量都会出错，我觉得rodge说的是对的

shurong 发表于 2008-5-4 10:14

我也遇到过同样的问题，应力-应变比值小于或大于设定的弹性模量都会出错，我觉得rodge说的是对的
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