谱分析 求助
我做了一个小小的谱分析例子，命令流如下：
/prep7
et,1,63
n,1,0
n,10,10
fill,1,10
ngen,10,10,1,10,1,,1
e,1,2,12,11
egen,9,1,1,1,1
egen,9,10,1,9,1
mat,1
mp,dens,1,7.8e3
mp,ex,1,2e11
mp,nuxy,1,0.3
real,1
r,1,0.25
et,2,14
type,2
real,2
r,2,960
n,,0,0,-1
n,,10,0,-1
n,,0,10,-1
n,,10,10,-1
e,1,101,
e,10,102
e,91,103
e,100,104
/solu
antype,2
modopt,lanb,10
mxpand,10,,,1
lumpm,0
pstres,0
modopt,lanb,10,0,1000000,,0ff
nsel,s,node,,101
nsel,a,node,,102
nsel,a,node,,103
nsel,a,node,,104
d,all,all
alls
solv
finish
!谱分析
!谱分析
/solu
antype,8
spopt,psd,10,yes
psdunit,1,velo
psdfrq,1,,1,40
PSDVAL,1,6.5617e-3,6.5617e-3
nsel,s,node,,1
nsel,a,node,,10
nsel,a,node,,91
nsel,a,node,,100
d,all,uz,1.0
alls
pfact,1,base
DMPRAT,0.02
PSDRES,DISP,ABS
PSDRES,VELO,ABS
PSDRES,ACEL,ABS
SOLVE
FINISH
/SOLU
ANTYPE,SPECTR
PSDCOM,0.001,100
SOLVE
SAVE
FINISH
/post26
store,psd,
nsol,2,50,u,z,50uy
rpsd,3,2,,2,,rrrrr
plvar,3
计算结果如下：（10阶频率）
***** INDEX OF DATA SETS ON RESULTS FILE *****
SET TIME/FREQ LOAD STEP SUBSTEP CUMULATIVE
1 0.0000 1 1 1
2 0.0000 1 2 2
3 0.21378E-01 1 3 3
4 0.26707E-01 1 4 4
5 0.36664E-01 1 5 5
6 0.37761E-01 1 6 6
7 9.1413 1 7 7
8 12.718 1 8 8
9 17.196 1 9 9
10 22.834 1 10 10
11 0.0000 2 1 11
12 0.0000 3 1 12
13 0.0000 4 1 13
14 0.0000 5 1 14
但是在post26后处理器进修psd计算得到的计算结果却为：
***** ANSYS POST26 VARIABLE LISTING *****
TIME 50 UZ
50uy
0.0000 0.903516E-03
0.0000 0.166758E-03
0.21378E-01 0.202841E-02
0.26707E-01 -0.207132E-02
0.36664E-01 0.974886E-03
0.37761E-01 -0.357823E-02
1.0000 0.00000
1.3444 0.00000
1.7576 0.00000
2.0446 0.00000
2.3316 0.00000
2.6186 0.00000
2.9056 0.00000
3.1926 0.00000
3.4796 0.00000
3.7666 0.00000
4.0536 0.00000
4.3406 0.00000
4.5707 0.00000
4.8576 0.00000
***** ANSYS POST26 VARIABLE LISTING *****
.............
TIME 50 UZ
50uy
30.301 0.00000
31.594 0.00000
33.111 0.00000
34.890 0.00000
36.977 0.00000
39.426 0.00000
42.298 0.00000
45.668 0.00000
49.712 0.00000
54.565 0.00000
60.388 0.00000
67.376 0.00000
75.761 0.00000
85.824 0.00000
97.899 0.00000
112.39 0.00000
120.00 0.00000
0.0000 0.00000
结果中的time代表啥意思，之间的间隔又是啥意思，最后的120又是啥意思，绘制出来的图代表什么（见附件）
请高手一定帮忙看看，万分感谢！！
