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实体建模初学

新虫 (初入文坛)

应助: 0 (幼儿园)
金币: 37
帖子: 12
在线: 3.2小时
虫号: 1859655
注册: 2012-06-14
专业: 结构工程

[求助] ansys#no element table items are available#问题怎么解决

求解的时候有几个点位移超限了
查看结果的时候就跳出来no element table items are available
不知道怎么解决，下面是命令流，就是一块钢筋混凝土板，分离式结构

Finish
/clear
/filname,watermelon,1
/config,nres,2000             !设置结果的荷载子步最大为2000
!单位采用，质量g，长度mm，力N
!基本参数设定
!板尺寸
lg=3840
hb=125
bb=500
!************定义单元\材料\实常数***************！
/prep7
et,1,solid65    !定义混凝土板单元为soild65
et,2,link8
keyopt,1,1,0       !考虑大变形
keyopt,1,7,1       ！考虑应力松弛，为半脆性开裂，有助于计算收敛
mp,ex,1,13585          !定义混凝土材料的弹性模量，泊松比
mp,prxy,1,0.2
fc=14.3$ft=1.43
tb,concr,1$tbdata,,0.5,0.95,ft,fc !考虑压碎
tb,miso,1,,11          !定义混凝土应力应变曲线，采用MISO模型
tbpt,,0.0002,fc*0.19$tbpt,,0.0004,fc*0.36$tbpt,,0.0006,fc*0.51
tbpt,,0.0008,fc*0.64$tbpt,,0.0010,fc*0.75$tbpt,,0.0012,fc*0.84
tbpt,,0.0014,fc*0.91$tbpt,,0.0016,fc*0.96$tbpt,,0.0018,fc*0.99
tbpt,,0.002,fc$tbpt,,0.0033,fc
mp,ex,2,2.0e5          !定义钢筋的弹性模量，泊松比
mp,prxy,2,0.3
tb,biso,2             !钢筋的应力应变曲线，用BISO模型
tbdata,,270,0
pi=acos(-1)
r,1,0.25*pi*6*6
r,2,0.25*pi*6*6/2
r,3

!****************几何建模***************!
Blc4,,,bb/2,hb,lg/2                         !创建1/4板模型
*do,i,1,25$wpoff,,,75$vsbw,all$*enddo          !切出箍筋位置
Wpcsys,-1$wpoff,,,37.5$vsbw,all             !切出加载区域
Wpcsys,-1$ Wprota,,-90$ wpoff,,,25$vsbw,all    !切出底部钢筋竖向位置
Wpoff,,,75$vsbw,all                         !切出顶部钢筋竖向位置
Wpcsys,-1$wprota,,,90
*do,I,1,3$wpoff,,,75$vsbw,all$*enddo             !切出纵向钢筋的位置
Wpcsys,-1
！定义属性划分单元网格
Elemsiz=50
lsel,s,loc,x,75$lsel,r,loc,y,25
lsel,a,loc,x,150$lsel,r,loc,y,25
lsel,a,loc,x,225$lsel,r,loc,y,25
cm,bj,line$latt,2,1,2$lesize,all,elemsiz       !底部钢筋，定义组件，设置属性
lsel,s,loc,x,0$lsel,r,loc,y,25
cm,bjb,line$latt,2,2,2$lesize,all,elemsiz       !底部中间钢筋
lsel,s,loc,x,75$lsel,r,loc,y,100
lsel,a,loc,x,150$lsel,r,loc,y,100
lsel,a,loc,x,225$lsel,r,loc,y,100
cm,tj,line$latt,2,1,2$lesize,all,elemsiz       !顶部钢筋，定义组件，设置属性
lsel,s,loc,x,0$lsel,r,loc,y,100
cm,tjb,line$latt,2,2,2$lesize,all,elemsiz       !顶部中间钢筋
lsel,s,tan1,z$lsel,r,loc,x,3,225$lsel,r,loc,y,25,100
lsel,u,loc,x,75$lsel,u,loc,x,150$lsel,u,loc,x,225
lsel,u,loc,z,37.5$lsel,u,loc,z,0$lsel,u,loc,z,1920
cm,gj,line$latt,2,1,2$lesize,all,elemsiz       ! 对称位置外的箍筋
lsel,s,loc,z,0$lsel,r,loc,x,3,225$lsel,r,loc,y,25,100
lsel,u,loc,x,75$lsel,u,loc,x,150$lsel,u,loc,x,225
cm,gjb,line$latt,2,2,2$lesize,all,elemsiz       !对称位置处的箍筋
lsel,all
cmsel,s,bj
cmsel,a,bjb
cmsel,a,tj
cmsel,a,tjb
cmsel,a,gj
cmsel,a,gjb
cm,gj,line
lmesh,all
lsel,all

!划分混凝土网格
Vatt,1,3,1$mshkey,1$esize,elemsiz$vmesh,all$allsel,all

!施加荷载和约束
Lsel,s,loc,y,0$lsel,r,loc,z,1875
Dl,all,,uy                      !施加约束竖向约束（此处采用线约束）
Asel,s,loc,z,0$Da,all,symm       !选择跨中对称面，施加对称约束
Asel,s,loc,x,0$Da,all,symm       !选择水平对称面，施加对称约束
P0=18000$Q0=P0/100/75
Asel,s,loc,z,0,37.5
Asel,r,loc,y,125
Asel,r,loc,x,0,50
Sfa,all,1,pres,Q0
Allsel,all

!求解控制设置与求解
/solu
antype,0                !静态分析
nsubst,100             !子步数
outres,all,all             !输出所有求解选项
autots,on             !使用自动时间步
neqit,50             !设置每个荷载子步的迭代次数为50
cnvtol,u,,0.015       !采用位移收敛准则，且收敛误差为1.5%
solve

！进入post1查看结果
/post1
Set,last             !读出最后一个荷载步的数据
Pldisp,1             !查看变形
Esel,s,type,,2          !选择所有钢筋单元
Etable,saxL,Ls,1
Plls,saxL,saxL,,0       !定义单元表，绘制钢筋应力图
Esel,s,type,,1          !选择混凝土单元
/device,vector,on
Plcrack             !设置矢量模型，绘制裂缝和压碎图

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