多层结构不同材料可以屈曲分析吗？？？
我是新手啊。如果是多层结构，临界压力较小的层先屈曲，对临界压力较大的层会产生垂直于轴向的压力，
这样就不是简单的屈曲了吧？？？？？？？
由于杆结构问题，网格12万，算得很慢。
/units,si
/prep7
et,1,solid45
MP,Ex,1,6.33e12
MP,prxy,1,0.3
MP,EX,2,0.021e12
MP,PRXY,2,0.3
k,1,0.17,,0
k,2,0.312,,0
k,3,0.368,,0
k,4,0.652,,0
k,5,0.708,,0
k,6,0.992,,0
k,7,1.048,,0
k,8,1.19,,0
k,9,0.17,,11.9
k,10,0.312,,11.9
k,11,0.368,,11.9
k,12,0.652,,11.9
k,13,0.708,,11.9
k,14,0.992,,11.9
k,15,1.048,,11.9
k,16,1.19,,11.9
k,100,0,0,0
k,101,0,0,11.9
a,1,2,10,9
a,3,11,10,2
a,3,4,12,11
a,4,5,13,12
a,5,6,14,13
a,6,7,15,14
a,7,8,16,15
GPLOT
vrotat,all,,,,,,100,101,360,2 !面旋转生成体
allsel
aslv,u
vglue,all
FLST,5,8,6,ORDE,8
FITEM,5,1
FITEM,5,3
FITEM,5,5
FITEM,5,7
FITEM,5,-8
FITEM,5,10
FITEM,5,12
FITEM,5,14
CM,_Y,VOLU
VSEL, , , ,P51X
CM,_Y1,VOLU
CMSEL,S,_Y
!*
CMSEL,S,_Y1
VATT, 2, , 1, 0 !!指定材料属性
CMSEL,S,_Y
CMDELE,_Y
CMDELE,_Y1
!*
FLST,5,6,6,ORDE,6
FITEM,5,2
FITEM,5,4
FITEM,5,6
FITEM,5,9
FITEM,5,11
FITEM,5,13
CM,_Y,VOLU
VSEL, , , ,P51X
CM,_Y1,VOLU
CMSEL,S,_Y
!*
CMSEL,S,_Y1
VATT, 1, , 1, 0 !!指定材料属性
CMSEL,S,_Y
CMDELE,_Y
CMDELE,_Y1
/PNUM,MAT,1
/REPLOT
lsel,s,loc,z,0
lsel,a,loc,z,11.9
lsel,u,loc,y,0
LESIZE,all,,6, , , , , ,1
allsel
LSEL,S,LOC,Z,1,11
LESIZE,all,0.119, , , , , , ,1
esize,0.056
VSWEEP,all !!!!!生成网格
/solu
antype,static
nsel,s,loc,z,0
d,all,all !截面边缘加约束
allsel
nsel,s,loc,z,11.9
*get,no_nodes,node,,count
f,all,fz,-1/no_nodes
allsel
OUTPR,,1
SOLVE
FINISH
/SOLU
ANTYPE,BUCKLE
BUCOPT,LANB
MXPAND,1
SOLVE
回复 楼主 bluecmy 的帖子
你这个好难哦，期待高手
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