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bsh603326299

新虫 (初入文坛)

[求助] 脚手架ansys分析非线形屈曲

分析了一个脚手架的的非线形屈曲,想找出临界失稳的荷载值,不知道出什么问题了,算完特征值屈曲后,用一阶模态的0.005作为初始缺陷,然后加上1.15倍一阶屈曲荷载,用弧长法分析,算到不收敛的临界荷载。结构变形都不明显

@wuming524 @wuming524 @wuming524 发自小木虫Android客户端
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bsh603326299

新虫 (初入文坛)

FINISH
/CLEAR
/FILNAME,DANG
/PREP7
ET,1,BEAM188
mp,ex,1,2.06e5
mp,prxy,1,0.3
mp,dens,1,7.85e9
tb,bkin,1
tbdata,1,235,0
sectype,1,beam,CTUBE,b1,5        
secoffset,cent
secdata,44.5,48,8
k,1
k,2,1200
k,3,2400
kgen,3,1,3,1,,1200
kgen,2,1,9,1,,,350,10
kgen,2,1,9,1,,,1550,20
kgen,2,1,9,1,,,2750,30
kgen,2,1,9,1,,,3100,40

*do,i,1,9,1
*do,j,1,4,1
l,i+(j-1)*10,i+j*10
*enddo
*enddo

*do,i,1,3,1
*do,k,1,7,3
*do,j,k,k+1,1
l,i*10+j,1+j+i*10
*enddo
*enddo
*enddo
*do,i,1,3,1
*do,k,1,3,1
*do,j,k,k+3,3
l,i*10+j,3+j+i*10
*enddo
*enddo
*enddo
type,1
mat,1
secnum,1
lesize,all,,,10
lmesh,all
*do,i,1,9,1
ksel,s,,,i
nslk,s
D,ALL,UX,O
D,ALL,UY,O
D,ALL,Uz,O
allsel
*enddo
*do,i,41,49,1
ksel,s,,,i
nslk,s
F,all,FZ,-1000
allsel
*enddo

/solu
pstres,on
solve
finish
/solu
antype,1
bucopt,lanb,3
mxpand,3
solve
finish
/prep7
upgeom,0.001,1,1,DANG,rst
finish
/solu
antype,0
nlgeom,1
outres,all,all
arclen,on
nsubst,500
time,800000
*do,i,41,49,1
ksel,s,,,i
nslk,s
F,all,FZ,-800000
allsel
*enddo
solve

发自小木虫Android客户端
2楼2017-09-24 18:24:08
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bsh603326299

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3楼2017-09-24 18:24:24
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wangkj

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Qing Feng

楼主解决问题了?
上善若水
4楼2018-10-02 09:15:31
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