我做的一个桅杆分析，可解不出结果，请问是怎么回事？

一下是本人做的一个桅杆分析的命令流，但求解时得不出结果，请高手指点为盼。

/PREP7
/color,pbak,1
/rep
ET,1,BEAM188
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,EX,1,,2.1e9
MPDATA,PRXY,1,,0.28
MPDATA,DENS,1,,7800
SECTYPE,1, BEAM, HREC, beam1, 2
SECOFFSET, CENT
SECDATA,0.12,0.08,0.008,0.008,0.008,0.008,0,0,0,0
SECTYPE,2, BEAM, HREC, beam2, 2
SECOFFSET, CENT
SECDATA,0.08,0.06,0.006,0.006,0.006,0.006,0,0,0,0
SECTYPE,3, BEAM, HREC, beam3, 2
SECOFFSET, CENT
SECDATA,0.1,0.06,0.008,0.008,0.008,0.008,0,0,0,0
ACEL,9.8,0,0

K,1,,,,
K,2,13.780,,,
LSTR,1,2
FLST,3,1,4,ORDE,1
FITEM,3,1
LGEN,2,P51X, , , ,0.630, , ,0
FLST,3,2,4,ORDE,2
FITEM,3,1
FITEM,3,-2
LGEN,2,P51X, , , , ,0.98, ,0
/VIEW,1,1,2,3
/ANG,1
/REP,FAST
FLST,5,4,4,ORDE,2
FITEM,5,1
FITEM,5,-4
CM,_Y,LINE
LSEL, , , ,P51X
CM,_Y1,LINE
CMSEL,S,_Y
CMSEL,S,_Y1
LATT,1, ,1, , , ,1
CMSEL,S,_Y
CMDELE,_Y
CMDELE,_Y1
FLST,3,4,3,ORDE,4
FITEM,3,1
FITEM,3,3
FITEM,3,5
FITEM,3,7
KGEN,2,P51X, , ,0.550, , , ,0
LSTR,10,9
LSTR,11,9
LSTR,11,12
FLST,3,3,4,ORDE,2
FITEM,3,5
FITEM,3,-7
LGEN,8,P51X, , ,0.980, , , ,0
FLST,3,3,4,ORDE,2
FITEM,3,26
FITEM,3,-28
LGEN,2,P51X, , ,0.080, , , ,0
FLST,3,3,4,ORDE,2
FITEM,3,29
FITEM,3,-31
LGEN,3,P51X, , ,0.980, , , ,0
LSTR,12,15
LSTR,15,20
LSTR,20,23
LSTR,23,28
LSTR,28,31
LSTR,31,36
LSTR,36,39
LSTR,43,48
LSTR,48,51
FLST,3,9,4,ORDE,2
FITEM,3,38
FITEM,3,-46
LGEN,2,P51X, , , , ,-0.980, ,0
LSTR,9,15
LSTR,15,18
LSTR,18,23
LSTR,23,26
LSTR,26,31
LSTR,31,34
LSTR,34,39
LSTR,43,46
LSTR,46,51
LSEL,ALL
FLST,5,4,4,ORDE,2
FITEM,5,1
FITEM,5,-4
LSEL,U, , ,P51X
FLST,5,60,4,ORDE,2
FITEM,5,5
FITEM,5,-64
CM,_Y,LINE
LSEL, , , ,P51X
CM,_Y1,LINE
CMSEL,S,_Y
CMSEL,S,_Y1
LATT,1, ,1, , , ,2
CMSEL,S,_Y
CMDELE,_Y
CMDELE,_Y1
FLST,3,3,4,ORDE,2
FITEM,3,35
FITEM,3,-37
LGEN,2,P51X, , ,0.99, , , ,0
LSTR,51,65
LSTR,51,67
LSTR,50,64
FLST,5,3,4,ORDE,2
FITEM,5,68
FITEM,5,-70
CM,_Y,LINE
LSEL, , , ,P51X
CM,_Y1,LINE
CMSEL,S,_Y
CMSEL,S,_Y1
LATT,1, ,1, , , ,2
CMSEL,S,_Y
CMDELE,_Y
CMDELE,_Y1
ALLSEL,ALL
FLST,3,3,4,ORDE,2
FITEM,3,65
FITEM,3,-67
LGEN,2,P51X, , ,0.700, , , ,0
FLST,3,3,4,ORDE,2
FITEM,3,71
FITEM,3,-73
LGEN,2,P51X, , ,0.100, , , ,0
LSTR,67,70
LSTR,66,71
LSTR,64,69
LSTR,68,65
LSTR,65,70
LSTR,66,69
/REPLOT
FLST,3,12,4,ORDE,2
FITEM,3,71
FITEM,3,-82
LGEN,4,P51X, , ,0.800, , , ,0
FLST,2,3,4,ORDE,2
FITEM,2,110
FITEM,2,-112
LDELE,P51X
FLST,5,48,4,ORDE,6
FITEM,5,65
FITEM,5,-67
FITEM,5,71
FITEM,5,-109
FITEM,5,113
FITEM,5,-118
LSEL,S, , ,P51X
FLST,5,48,4,ORDE,6
FITEM,5,65
FITEM,5,-67
FITEM,5,71
FITEM,5,-109
FITEM,5,113
FITEM,5,-118
CM,_Y,LINE
LSEL, , , ,P51X
CM,_Y1,LINE
CMSEL,S,_Y
CMSEL,S,_Y1
LATT,1, ,1, , , ,3
CMSEL,S,_Y
CMDELE,_Y
CMDELE,_Y1
FLST,5,4,4,ORDE,2
FITEM,5,1
FITEM,5,-4
LSEL,S, , ,P51X
FLST,5,4,4,ORDE,2
FITEM,5,1
FITEM,5,-4
CM,_Y,LINE
LSEL, , , ,P51X
CM,_Y1,LINE
CMSEL,,_Y
LESIZE,_Y1, , ,100, , , , ,1
FLST,2,4,4,ORDE,2
FITEM,2,1
FITEM,2,-4
LMESH,P51X
/eshape,1
ALLSEL,ALL
FLST,5,4,4,ORDE,2
FITEM,5,1
FITEM,5,-4
LSEL,U, , ,P51X
FLST,5,111,4,ORDE,4
FITEM,5,5
FITEM,5,-109
FITEM,5,113
FITEM,5,-118
CM,_Y,LINE
LSEL, , , ,P51X
CM,_Y1,LINE
CMSEL,,_Y
LESIZE,_Y1, , ,20, , , , ,1
FLST,2,111,4,ORDE,4
FITEM,2,5
FITEM,2,-109
FITEM,2,113
FITEM,2,-118
LMESH,P51X
/eshape,1
eplot

！加载求解
ALLSEL,ALL
NSEL,S,LOC,X,13.78
FLST,2,4,1,ORDE,4
FITEM,2,2
FITEM,2,103
FITEM,2,204
FITEM,2,305
/GO
D,P51X, ,0, , , ,ALL, , , , ,
ALLSEL,ALL
NSEL,S,LOC,X,0
FLST,2,4,1,ORDE,4
FITEM,2,1
FITEM,2,102
FITEM,2,203
FITEM,2,304
/GO
F,P51X,FX,10000
ALLSEL,ALL
FINISH
/SOL
/STATUS,SOLU
SOLVE
FINISH
求解过程中有如附件所示提示。
请问这是怎么回事？我的问题出在哪？