ANSYS中beam188单元做非线性屈曲分析

FINISH/CLEAR/filname,frame-beam188/prep7et,1,beam188sectype,1,beam,isecdata,300,300,400,20,20,16mp,ex,1,206000mp,prxy,1,0.3mp,dens,1,7.85e-6k,1,0,0,0k,2,0,0,3600k,3,3600,0,3600k,4,7200,0,3600k,5,7200,0,0l,1,2l,2,3l,3,4l,4,5lsel,s,line,,1,1latt,1,,1,,5,,1lsel,s,line,,2,3latt,1,,1,,5,,1lsel,s,line,,4,4latt,1,,1,,1,,1allsellesize,all,,,5fk,3,fz,-1e7acel,0,0,9.8ksel,s,loc,z,0dk,all,allallsellmesh,all/soluantype,0pstres,onsolvefinish/soluantype,bucklebucopt,lanb,12mxpand,12,,,1solvefinish/post1!set,list,listfinish/prep7upgeom,1,1,1,frame-beam188,rsttb,miso,1,,3tbpt,,235/206000,235tbpt,,0.025,235tbpt,,0.26,370allsel/soluantype,0nsubst,500nlgeom,onarclen,on,arctrum,u,2000,12,uyoutres,all,allautots,onsolvefinish