网架结构,beam188单元,设置的EX=207000,Q345钢,密度7.85e-6,做特征值屈曲分析时,施加单位力,重力加速度9800,最后得出的屈曲荷载系数是0.038261,感觉不太对啊,哪位能帮我分析一下原因吗?谢谢了!
下面是部分命令流:
ANTYPE,0
EQSLV,SPAR
PSTRES,1
/STATUS,SOLU
SOLVE
finish
/SOLU
!*
ANTYPE,1
!*
!*
BUCOPT,SUBSP,3,0,0
!*
SUBOPT,0,0,0,100,5,ALL
/STATUS,SOLU
SOLVE
FINISH
/POST1
SET,FIRST
PLDISP,0
/REPLOT,RESIZE
*get,freq1,mode,1,freq
FINISH
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