!EX7.4 荷载在不同位置时简支梁的侧倾屈曲 finish /clear /prep7 l=9 w=0.32 tw=0.012 tf=0.008 h=0.924
et,1,beam1,1 mp,ex,1,2.06e11 mp,gxy,1,7.9e10 sectype,1,beam,i secoffset,user,,h !secoffst,cent !secoffst,origin
secdata,w,w,h,tw,tw,tf k,1
k,2,,,l/2 k,3,,,l
k,4,,l/2,l/2 l,1,2 l,2,3
latt,1,,1,,4,,1 lesize,all,,,30 lmesh,all
dk,1,ux,,,,uy,uz,rotz dk,3,ux,,,,uy,rotz fk,2,fy,-1 /solu pstres,on solve finish /solu antype,1
bucopt,lanb,1 mxpand,1
outres,all,all solve finish /post1 set,list
