单元截面为工字钢，但用beam3建模后，打开Eshape变成了矩形钢。

/PREP7
!*
ET,1,BEAM3
!*
R,1,0.006655,0.00019,0.32, , , ,
!*
!*
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,EX,1,,2.2e11
MPDATA,PRXY,1,,0.3
!*
SECTYPE, 1, BEAM, I, , 0
SECOFFSET, CENT
SECDATA,0.13,0.13,0.32,0.015,0.015,0.0095,0,0,0,0
K,1,0,0,0,
K,2,1,0,0,
/DIST,1,1.08222638492,1
/REP,FAST
/DIST,1,1.08222638492,1
/REP,FAST
/DIST,1,1.08222638492,1
/REP,FAST
/PNUM,KP,1
/PNUM,LINE,1
/PNUM,AREA,0
/PNUM,VOLU,0
/PNUM,NODE,0
/PNUM,TABN,0
/PNUM,SVAL,0
/NUMBER,0
!*
/PNUM,ELEM,0
/REPLOT
!*
LSTR, 1, 2
FLST,5,1,4,ORDE,1
FITEM,5,1
CM,_Y,LINE
LSEL, , , ,P51X
CM,_Y1,LINE
CMSEL,,_Y
!*
FLST,5,1,4,ORDE,1
FITEM,5,1
CM,_Y,LINE
LSEL, , , ,P51X
CM,_Y1,LINE
CMSEL,,_Y
!*
LESIZE,_Y1, , ,10, , , , ,1
!*
LMESH, 1
/DIST,1,1.08222638492,1
/REP,FAST
/DIST,1,1.08222638492,1
/REP,FAST
/DIST,1,0.924021086472,1
/REP,FAST
/DIST,1,0.924021086472,1
/REP,FAST
FINISH
/SOL
以上命令流是用beam3做的工字钢的分析，发现在画完网格Eshape打开后，为矩形实心钢，不是工字钢显示，很是郁闷。但计算结果没有误差，请各位高手帮忙看看，问题出在什么地方？