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新虫 (初入文坛)

应助: 0 (幼儿园)
金币: 7
帖子: 1
在线: 1.6小时
虫号: 3327486
注册: 2014-07-17
专业: 结构工程

[求助] ansys 钢管混凝土模拟为什么算几步就算不下去了？附命令流已有1人参与

/PREP7
ET,1,SOLID65,,,,,,,1
ET,2,SOLID45

K,1
K,2,0.021,0,0
K,3,0.024,0,0
K,4,0.087,0,0
K,5,0.09,0,0
K,6,0,0.54,0
L,1,2
L,2,3
L,3,4
L,4,5
L,1,6
AROTAT,2,3,4,,,,1,6
ALLSEL,ALL
VDRAG,ALL,,,,,,5

MP,EX,1,2.0e11    !外层钢管的材料属性
mp,dens,1,7850
mp,prxy,1,0.3
tb,bkin,1
tbdata,1,257.9e6,0

MP,EX,2,2.0e11    !内层钢管的材料属性
mp,dens,2,7850
mp,prxy,2,0.3
tb,bkin,2
tbdata,1,396.1e6,0

mp,ex,3,2.0e10
mp,prxy,3,0.173
mp,dens,3,1800
tb,mkin,3
tbtemp,,strain
tbdata,,0.0005,0.001,0.002,0.004,0.005,
tbtemp,0.0
tbdata,,10.0e6,19.2e6,32.5e6,41.6e6,41.6e6

tb,concr,3,3
tbdata,,0.4,0.9,,-1

*do,i,1,4,1
vglue,1+3*(i-1),2+3*(i-1)
vglue,2+3*(i-1),3+3*(i-1)
*enddo

vsel,s,volue,,1,10,3
vatt,2,,2
vsel,all
vsel,s,volue,,3,12,3
vatt,1,,2

vsel,all
VSEL,s ,volue , ,2,11,3
vatt,3,,1
vsel,all

ESIZE,0.012,0
MSHAPE,0,3D
MSHKEY,1
VSEL,s ,volue , ,2,11,3
VMESH,all

vsel,all
ESIZE,0,1
MSHAPE,0,3D
MSHKEY,1
VSEL,s ,volue , ,1,10,3
vsel,a,volue,,3,12,3
VMESH,all
vsel,all

FLST,4,432,1,ORDE,60
FITEM,4,14
FITEM,4,59
FITEM,4,-70
FITEM,4,605
FITEM,4,650
FITEM,4,-654
FITEM,4,887
FITEM,4,932
FITEM,4,-942
FITEM,4,1432
FITEM,4,-1436
FITEM,4,1712
FITEM,4,-1766
FITEM,4,4199
FITEM,4,-4210
FITEM,4,4745
FITEM,4,4790
FITEM,4,-4794
FITEM,4,5026
FITEM,4,-5036
FITEM,4,5576
FITEM,4,-5630
FITEM,4,8063
FITEM,4,-8074
FITEM,4,8609
FITEM,4,8654
FITEM,4,-8658
FITEM,4,8890
FITEM,4,-8900
FITEM,4,9440
FITEM,4,-9494
FITEM,4,11926
FITEM,4,-11936
FITEM,4,12432
FITEM,4,-12442
FITEM,4,12982
FITEM,4,-13036
FITEM,4,15470
FITEM,4,15515
FITEM,4,-15526
FITEM,4,16056
FITEM,4,16113
FITEM,4,16158
FITEM,4,-16168
FITEM,4,16665
FITEM,4,16710
FITEM,4,-16720
FITEM,4,17206
FITEM,4,17262
FITEM,4,-17272
FITEM,4,17769
FITEM,4,17814
FITEM,4,-17824
FITEM,4,18310
FITEM,4,18366
FITEM,4,-18376
FITEM,4,18872
FITEM,4,-18882
FITEM,4,19378
FITEM,4,-19388
CP,1,UY,P51X

acel,,9.8

allsel,all
finish

/solu
nsel,s,loc,y,0
d,all,all
  allsel
nsel,s,loc,y,0.54
d,all,ux
d,all,uz

allsel
antype,static
outres,basic,all       !输出选项
outpr,basic,all       !窗口输出，这个没什么影响
autots,on             !自动计算时间步长
nlgeom,on          !打开是大变形，非线性
outres,all,all    !输出所有子步结果
time,1
allsel

d,14,uy,-0.01

nsubst,300             !荷载子步
neqit,20
eqslv,-1
ncnv,1             !终止分析选项，终止分析且退出程序
lnsrch,on          !线性搜索，使计算稳定
cnvtol,u,,0.015
allsel
solve

/post1
allsel
plnsol,s,eqv,0,1    !应力云图

  allsel
vsel,s,volue,,1,10,3
eslv,r
plnsol,s,eqv,0,1    !内钢管应力图

   allsel
VSEL, , , ,1
eslv,r
plnsol,s,eqv,0,1    !内钢管剖面应力图

allsel
vsel,s,volue,,3,12,3
eslv,r
plnsol,s,eqv,0,1    !外钢管应力图

   allsel
VSEL, , , ,3
eslv,r
plnsol,s,eqv,0,1    !外钢管剖面应力图

   allsel
VSEL,s ,volue , ,2,11,3
eslv,r
plnsol,s,eqv,0,1    !混凝土应力图

   allsel
VSEL, , , ,2
eslv,r
plnsol,s,eqv,0,1    !混凝土剖面应力图

/post26          !极限承载力（耦合提法）
nsol,2,14,u,y
rforce,3,14,f,y
/axlab,x,deflection(m)
/axlab,y,totle load(N)>
/xrange,0
/yrange,0
prod,2,,,,,,,-1
prod,3,,,,,,,-1
xvar,2
plvar,3

出现以下警告和错误提结果大体符合但不完整，得不到位移荷载曲线平滑段，只计算几步就不算了

*** WARNING ***                      CP =    302.377 TIME= 16:38:57
There are 3 small equation solver pivot terms.

*** WARNING ***                      CP =    322.407 TIME= 16:39:18
There are 7 small equation solver pivot terms.

*** WARNING ***                      CP =    343.031 TIME= 16:39:38
There are 22 small equation solver pivot terms.

*** WARNING ***                      CP =    364.684 TIME= 16:40:00
There are 112 small equation solver pivot terms.

*** WARNING ***                      CP =    753.188 TIME= 16:46:32
There are 2 small equation solver pivot terms.

*** WARNING *** SUPPRESSED MESSAGE CP =    779.787 TIME= 16:46:59
There are 3 small equation solver pivot terms.

*** WARNING *** SUPPRESSED MESSAGE CP =    803.234 TIME= 16:47:23
There are 18 small equation solver pivot terms.

*** WARNING *** SUPPRESSED MESSAGE CP =    864.074 TIME= 16:48:24
There are 2 small equation solver pivot terms.

*** WARNING *** SUPPRESSED MESSAGE CP =    909.751 TIME= 16:49:10
There are 7 small equation solver pivot terms.

*** WARNING *** SUPPRESSED MESSAGE CP =    932.855 TIME= 16:49:33
There are 31 small equation solver pivot terms.

*** WARNING *** SUPPRESSED MESSAGE CP = 1014.865 TIME= 16:50:56
There are 4 small equation solver pivot terms.

*** WARNING *** SUPPRESSED MESSAGE CP = 1085.361 TIME= 16:52:07
There are 1 small equation solver pivot terms.

*** WARNING *** SUPPRESSED MESSAGE CP = 1110.540 TIME= 16:52:32
There are 11 small equation solver pivot terms.

*** WARNING *** SUPPRESSED MESSAGE CP = 1136.358 TIME= 16:52:58
There are 107 small equation solver pivot terms.

*** WARNING *** SUPPRESSED MESSAGE CP = 1170.304 TIME= 16:53:32
There are 4 small equation solver pivot terms.

*** WARNING *** SUPPRESSED MESSAGE CP = 1198.244 TIME= 16:54:00
There are 12 small equation solver pivot terms.

*** WARNING *** SUPPRESSED MESSAGE CP = 1223.422 TIME= 16:54:25
There are 25 small equation solver pivot terms.

*** WARNING *** SUPPRESSED MESSAGE CP = 1243.141 TIME= 16:54:45
There are 241 small equation solver pivot terms.

*** WARNING *** SUPPRESSED MESSAGE CP = 1277.024 TIME= 16:55:19
There are 4 small equation solver pivot terms.

*** ERROR ***    SUPPRESSED MESSAGE CP = 1298.459 TIME= 16:55:41
Equivalent plastic strain increment has exceeded the specified limit
value.  Since the time increment has reached the minimum value, the
analysis is stopped.

出现以上错误，只加载几步，应力应变都还很小的时候就不算了，得不到荷载位移曲线的平滑段啊，求指导

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