ansys时程分析材料非线性问题！

NT=30
*DIM,TIME,table,NT
*DIM,AC_X,table,NT
*DIM,AC_Y,table,NT
*DIM,AC_Z,table,NT
*TREAD,AC_X,'TIME','txt',' ', ,
*TREAD,AC_X,'AC_X','txt',' ', ,
*TREAD,AC_Y,'AC_Y','txt',' ', ,
*TREAD,AC_Z,'AC_Z','txt',' ', ,
*TREAD,TIME,'TIME','txt',' ', ,
FINI
! /EXIT
/BATCH
/COM,ANSYS RELEASE 10.0 UP20050718 18:14:56 01/13/2011
/input,menust,tmp,'',,,,,,,,,,,,,,,,1
/GRA,POWER
/GST,ON
/PLO,INFO,3
/GRO,CURL,ON
/CPLANE,1
/REPLOT,RESIZE
WPSTYLE,,,,,,,,0
*SET,NT,30
*DIM,TIME,table,NT
*DIM,AC_X,table,NT
*DIM,AC_Y,table,NT
*DIM,AC_Z,table,NT
*TREAD,AC_X,'AC_X','txt',' ', ,
*TREAD,AC_Y,'AC_Y','txt',' ', ,
*TREAD,AC_Z,'AC_Z','txt',' ', ,
*TREAD,TIME,'TIME','txt',' ', ,
!*
/NOPR
/PMETH,OFF,0
KEYW,PR_SET,1
KEYW,PR_STRUC,1
KEYW,PR_THERM,0
KEYW,PR_FLUID,0
KEYW,PR_ELMAG,0
KEYW,MAGNOD,0
KEYW,MAGEDG,0
KEYW,MAGHFE,0
KEYW,MAGELC,0
KEYW,PR_MULTI,0
KEYW,PR_CFD,0
/GO
!*
/COM,
/COM,Preferences for GUI filtering have been set to display:
/COM, Structural
!*
/PREP7
!*
ET,1,BEAM188
!*
ET,2,SHELL63
!*
R,1,0.1,0.1 ,0.1 , 0.1, , ,
RMORE, , , , , , ,
!*
!*
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,EX,1,,3e10
MPDATA,PRXY,1,,0.2
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,DENS,1,,2500
TB,KINH,1,1,6,0
TBTEMP,0
TBPT,,0.001,3e7
TBPT,,0.002,4e7
TBPT,,0.0035,4.8e7
TBPT,,0.0045,5.24e7
TBPT,,0.005,5.5e7
TBPT,,0.0058,5.75e7 !*
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDE,EX,1
MPDE,PRXY,1
MPDATA,EX,1,,3E+010
MPDATA,PRXY,1,,0.2
TBDE,KINH,1,,,
TB,KINH,1,1,6,0
TBTEMP,0
TBPT,,0.001,3E+007
TBPT,,0.002,4E+007
TBPT,,0.0035,4.8E+007
TBPT,,0.0045,5.24E+007
TBPT,,0.005,5.5E+007
TBPT,,0.0058,5.75E+007
SECTYPE, 1, BEAM, RECT, zhu, 0
SECOFFSET, CENT
SECDATA,400,400,0,0,0,0,0,0,0,0
SECTYPE, 1, BEAM, RECT, zhu, 0
SECOFFSET, CENT
SECDATA,400,400,0,0,0,0,0,0,0,0
SECTYPE, 2, BEAM, RECT, liang, 0
SECOFFSET, CENT
SECDATA,250,500,0,0,0,0,0,0,0,0
SECPLOT, 2,0
*do,i,1,4
*do,j,1,6
k,(i-1)*6+1,0,0,(i-1)*3
k,(i-1)*6+2,3,0,(i-1)*3
k,(i-1)*6+3,6,0,(i-1)*3
k,(i-1)*6+4,6,3,(i-1)*3
k,(i-1)*6+5,3,3,(i-1)*3
k,(i-1)*6+6,0,3,(i-1)*3
*enddo
*enddo
*do,i,1,3
*do,j,1,6
l,(i-1)*6+1,(i-1)*6+2
l,(i-1)*6+2,(i-1)*6+3
l,(i-1)*6+6,(i-1)*6+5
l,(i-1)*6+4,(i-1)*6+5
l,(i-1)*6+4,(i-1)*6+3
l,(i-1)*6+2,(i-1)*6+5
l,(i-1)*6+6,(i-1)*6+1
l,(i-1)*6+j,i*6+j
*enddo
*enddo
/VIEW,1,1,1,1
/ANG,1
/REP,FAST
GPLOT
/USER, 1
/VIEW, 1, 0.622841638204 , -0.666672753171 , -0.409409005641
/ANG, 1, 35.9069813058
/REPLO
/VIEW, 1, -0.676020375937 , -0.730920876332 , -0.935474417592E-01
/ANG, 1, -90.6221145278
/REPLO
/VIEW, 1, -0.206066667960 , -0.908873916311 , -0.362608235711
/ANG, 1, -42.9170447864
/REPLO
/AUTO, 1
/REP
FLST,2,4,4
FITEM,2,28
FITEM,2,31
FITEM,2,30
FITEM,2,32
AL,P51X
FLST,2,4,4
FITEM,2,27
FITEM,2,33
FITEM,2,29
FITEM,2,32
AL,P51X
FLST,2,4,4
FITEM,2,15
FITEM,2,18
FITEM,2,17
FITEM,2,19
AL,P51X
FLST,2,4,4
FITEM,2,14
FITEM,2,20
FITEM,2,16
FITEM,2,19
AL,P51X
FLST,2,4,4
FITEM,2,1
FITEM,2,6
FITEM,2,3
FITEM,2,7
AL,P51X
FLST,2,4,4
FITEM,2,2
FITEM,2,4
FITEM,2,5
FITEM,2,6
AL,P51X
TYPE, 1
MAT, 1
REAL, 1
ESYS, 0
SECNUM, 1
!*
FLST,5,18,4,ORDE,6
FITEM,5,8
FITEM,5,-13
FITEM,5,21
FITEM,5,-26
FITEM,5,34
FITEM,5,-39
CM,_Y,LINE
LSEL, , , ,P51X
CM,_Y1,LINE
CMSEL,,_Y
!*
LESIZE,_Y1, , ,6, , , , ,1
!*
FLST,2,18,4,ORDE,6
FITEM,2,8
FITEM,2,-13
FITEM,2,21
FITEM,2,-26
FITEM,2,34
FITEM,2,-39
LMESH,P51X
GPLOT
TYPE, 1
MAT, 1
REAL, 1
ESYS, 0
SECNUM, 2
!*
FLST,5,21,4,ORDE,6
FITEM,5,1
FITEM,5,-7
FITEM,5,14
FITEM,5,-20
FITEM,5,27
FITEM,5,-33
CM,_Y,LINE
LSEL, , , ,P51X
CM,_Y1,LINE
CMSEL,,_Y
!*
LESIZE,_Y1, , ,6, , , , ,1
!*
FLST,2,21,4,ORDE,6
FITEM,2,1
FITEM,2,-7
FITEM,2,14
FITEM,2,-20
FITEM,2,27
FITEM,2,-33
LMESH,P51X
SAVE
TYPE, 2
MAT, 1
REAL, 1
ESYS, 0
SECNUM, ,
!*
FLST,5,21,4,ORDE,6
FITEM,5,1
FITEM,5,-7
FITEM,5,14
FITEM,5,-20
FITEM,5,27
FITEM,5,-33
CM,_Y,LINE
LSEL, , , ,P51X
CM,_Y1,LINE
CMSEL,,_Y
!*
LESIZE,_Y1, , ,6, , , , ,1
!*
MSHKEY,0
FLST,5,6,5,ORDE,2
FITEM,5,1
FITEM,5,-6
CM,_Y,AREA
ASEL, , , ,P51X
CM,_Y1,AREA
CHKMSH,'AREA'
CMSEL,S,_Y
!*
AMESH,_Y1
!*
CMDELE,_Y
CMDELE,_Y1
CMDELE,_Y2
!*
SAVE
FINISH
/SOL
FLST,2,6,3,ORDE,2
FITEM,2,19
FITEM,2,-24
!*
/GO
DK,P51X, , , ,0,ALL, , , , , ,
/DIST,1,1.08222638492,1
/REP,FAST
/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
/DIST,1,0.924021086472,1
/REP,FAST
ANTYPE,TRANS
*DO,I,1,NT
NSUBST,1,,,1
NLGEOM,1
TIME,TIME(I)
ACEL,AC_X(I),AC_Y(I),AC_Z(I)
SOLVE
*ENDDO
SAVE
我分别将命令流中材料非线性（红色部分）去掉，和不去掉进行求解，但得出的结果完全相同！我想知道这是为什么？ansys在求解时是不是没有考虑材料非线性！求高手指教！