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ANSYS中beam188单元做非线性屈曲分析

FINISH
/CLEAR
/filname,frame-beam188
/prep7
et,1,beam188
sectype,1,beam,i
secdata,300,300,400,20,20,16
mp,ex,1,206000
mp,prxy,1,0.3
mp,dens,1,7.85e-6
k,1,0,0,0
k,2,0,0,3600
k,3,3600,0,3600
k,4,7200,0,3600
k,5,7200,0,0
l,1,2
l,2,3
l,3,4
l,4,5
lsel,s,line,,1,1
latt,1,,1,,5,,1
lsel,s,line,,2,3
latt,1,,1,,5,,1
lsel,s,line,,4,4
latt,1,,1,,1,,1
allsel
lesize,all,,,5
fk,3,fz,-1e7
acel,0,0,9.8
ksel,s,loc,z,0
dk,all,all
allsel
lmesh,all
/solu
antype,0
pstres,on
solve
finish
/solu
antype,buckle
bucopt,lanb,12
mxpand,12,,,1
solve
finish
/post1
!set,list,list
finish
/prep7
upgeom,1,1,1,frame-beam188,rst
tb,miso,1,,3
tbpt,,235/206000,235
tbpt,,0.025,235
tbpt,,0.26,370
allsel
/solu
antype,0
nsubst,500
nlgeom,on
arclen,on,
arctrum,u,2000,12,uy
outres,all,all
autots,on
solve
finish

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