命令流


/PREP7
ET,1,188
ET,2,181
KEYOPT,1,1,0
KEYOPT,1,2,0
KEYOPT,1,3,0
KEYOPT,1,4,0
KEYOPT,1,6,0
KEYOPT,1,7,0
KEYOPT,1,9,0
KEYOPT,1,11,0
KEYOPT,1,12,0
KEYOPT,1,15,0
!*
KEYOPT,2,1,0
KEYOPT,2,3,0
KEYOPT,2,8,0
KEYOPT,2,9,0
KEYOPT,2,10,0
!*
!*
MP,EX,1,2.0e11
MP,PRXY,1,0.3
MP,Dens,1,7850

MP,EX,2,2.0e10
MP,PRXY,2,0.3
MP,Dens,2,2500

SECTYPE, 1, BEAM, HREC, , 0
SECOFFSET, CENT
SECDATA,0.35,0.35,0.012,0.012,0.012,0.012,0,0,0,0

SECTYPE, 2, BEAM, I, mainbeam, 0
SECOFFSET, CENT
SECDATA,0.25,0.25,0.35,0.014,0.014,0.009,0,0,0,0

SECTYPE, 3, BEAM, I, , 0
SECOFFSET, CENT
SECDATA,0.15,0.15,0.2,0.009,0.009,0.006,0,0,0,0

sect,4,shell,,
secdata, 0.25,1,0.0,3
secoffset,MID
seccontrol,,,, , , ,

k,1,0, 0, 0
k,2,4.5, 0, 0
k,3,4.5, 4.5, 0
k,4,0, 4.5, 0

KGEN,2,all, , , , ,3, ,0

*DO,II,1,4
l,II,II+4
*ENDDO

k, 9, 2.25, 0, 3
k,10, 2.25, 2.25, 3
k,11, 2.25, 4.5, 3
k,12, 0, 2.25, 3
k,13, 4.5, 2.25, 3

l,5,12
l,12,8
l,8,11
l,11,7

l,7,13
l,13,6
l,6,9
l,9,5

l,10,9
l,10,11
l,10,12
l,10,13


LSEL,S,LINE,,1,4
LATT,1, ,1, , , ,1
LESIZE,ALL, , ,6, , , , ,1

LSEL,S,LINE,,5,12
LATT,1, ,1, , , ,2
LESIZE,ALL, , ,3, , , , ,1

LSEL,S,LINE,,13,16
LATT,1, ,1, , , ,3
LESIZE,ALL, , ,3, , , , ,1

alls
lmesh,all

LGEN,9,all, , , , ,3, ,0

ALLSEL,ALL
NUMMRG,ALL, , , ,LOW
NUMCMP,ALL

KSEL,S,KP,,5,13
KGEN,2,all, , ,0, , , ,0
A,86,90,91,93
A,90,87,94,91
A,93,91,92,89
A,91,94,88,92
AATT, 2, , 2, 0, 4



LSEL,S,LINE,,145,156
LESIZE,ALL, , ,3, ,1, , ,1,

Amesh,all

AGEN,9,all, , , , ,3, ,0
alls

NSEL,U,LOC,X,0.1,4.4
NSEL,U,LOC,Y,0.1,4.4
NUMMRG,NODE, , , ,LOW
alls

FINISH
/SOL
NSEL,S,LOC,Z,0
D,all, , , , , ,ALL, , , , ,

alls

ANTYPE,2
MODOPT,LANB,15
EQSLV,SPAR
MXPAND,15, , ,0
LUMPM,1
PSTRES,0
!*
MODOPT,LANB,15,0,0, ,OFF


以上是命令流，各位前辈帮忙指正


然后是模态异常的自振形态