用大变形怎么输出屈曲临界载荷

bluecmy

用特征值法计算出临界压力15.7，再用大变形计算临界压力，不知道怎么输出临界压力


/prep7
B=0.006
H=0.006
L=1.2
A=B*H
I=B*H**3/12
et,1,beam23
r,1,A,I,H
mp,ex,1,8.5e10
mp,prxy,1,0.3
/PNUM,node,1
n,1
n,11,L
fill,1,11,9
e,1,2
egen,10,1,1
eplot
finish

/solu              !特征值求解
antype,0
d,1,all
f,11,fx,-1
allsel
pstres,on
solve
finish

/solu
antype,1
bucopt,subsp,1
mxpand,1
solve
finish

/solu                   ！大变形求解
antype,0
d,1,all
f,11,fx,-15.7
nlgeom,1
nsubst,10,0,0
arclen,1,1,0.001
outres,all,all
arctrm,l
solve
finish