模态分析的结果如下，请高手指导一下下
本人做的是一个核电站泵体底座的抗震分析，模态分析的前十阶频率如下：*****INDEX OF DATA SETS ON RESULTS FILE*****
SET TIME/FREQ LOAD STEP SUBSTEPCUMULATIVE
11160.8 1 1 1
21335.2 1 2 2
31493.0 1 3 3
41636.8 1 4 4
51784.3 1 5 5
62097.9 1 6 6
72415.3 1 7 7
82627.3 1 8 8
92774.6 1 9 9
102957.6 1 10 10
不知道是不是太大了，看书上的抗震分析的频率都很小（都是几十的），不知道是什么原因？
请高手知道一下啊，谢谢！ 这个好像是有点大，可能是你的单位有问题，检查一下建模时单位是不是取错了 看看命令流吧 关这样不知道怎么找原因 在pro-e中建模的单位是mmNS导入到ansys中的时候，先缩小了0.001，单位应该没有错吧，也就是将单位都换成了国际单位制了
[ 本帖最后由 dlxhong 于 2006-10-9 09:37 编辑 ] 命令流如下：请大家看一看，谢谢（本人刚开始学习）
/BATCH
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/MREP,EPLOT
! Start of report captures.
~eui,'package require ansys'
~eui,'ansys::report::setdirectory "1_report"'
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~eui,'ansys::report::finished'
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ET,1,SOLID92
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MPTEMP,1,0
MPDATA,EX,1,,2.2e11
MPDATA,PRXY,1,,0.3
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,DENS,1,,7800
KATT, 1, , 1, 0
MSHKEY,0
MSHAPE,1,3d
MSHKEY,0
MSHAPE,1,3d
MSHKEY,0
MSHAPE,1,3d
MSHKEY,0
MSHAPE,1,3d
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MSHAPE,1,3d
SAVE
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SAVE
SAVE,'1','db','E:\yx\design\ansys-design\bengti\dalw\'
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/SOLU
!*
ANTYPE,0
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FINISH
/PREP7
MSHKEY,0
MSHAPE,1,3d
CM,_Y,VOLU
VSEL, , , , 4
CM,_Y1,VOLU
CHKMSH,'VOLU'
CMSEL,S,_Y
!*
VMESH,_Y1
!*
CMDELE,_Y
CMDELE,_Y1
CMDELE,_Y2
!*
SAVE
SAVE
VPLOT
/VIEW,1, -0.675677234294 ,0.442246045897E-01, -0.735869865809
/ANG, 1,-103.972409536
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/REP,FAST
/VIEW,1, -0.214496778965 ,0.480001344188E-01, -0.975544524309
/ANG, 1,-105.338147140
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/VIEW,1, -0.360579358575 , -0.135468888455E-01, -0.932630156049
/ANG, 1,-105.228940517
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FINISH
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!*
ANTYPE,2
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EXPASS,0
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MSAVE,0
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MODOPT,LANB,10
EQSLV,SPAR
MXPAND,10, , ,0
LUMPM,0
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!*
MODOPT,LANB,10,0,0, ,OFF
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FLST,2,4,6,ORDE,3
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VDELE,P51X
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FLST,2,1,6,ORDE,1
FITEM,2,4
VLSCAL,P51X, , ,0.001,0.001,0.001, ,1,1
VPLOT
/ZOOM,1,SCRN,0.006108,0.270779,0.048976,0.239610
/ZOOM,1,SCRN,1.194717,0.235714,1.218100,0.212338
SAVE
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SAVE
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!*
ET,1,SOLID92
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MPTEMP,1,0
MPDATA,EX,1,,2.2e11
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MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,DENS,1,,7800
KATT, 1, , 1, 0
MSHKEY,0
MSHAPE,1,3d
CM,_Y,VOLU
VSEL, , , , 4
CM,_Y1,VOLU
CHKMSH,'VOLU'
CMSEL,S,_Y
!*
VMESH,_Y1
!*
CMDELE,_Y
CMDELE,_Y1
CMDELE,_Y2
!*
SAVE
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SAVE
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ANTYPE,2
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LUMPM,0
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!*
MODOPT,LANB,10,0,0, ,OFF
/VIEW,1,0.385467206899 , -0.459106989360 , -0.800397279310
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RESUME
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RESUME
/COM,ANSYS RELEASE9.0 UP20041104 11:07:20 10/09/2006
VPLOT
FLST,2,1,5,ORDE,1
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FITEM,2,134
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DA,P51X,ALL,
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SOLVE
FINISH
/POST1
SET,LIST
FINISH
/SOL
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ANTYPE,2
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MODOPT,LANB,10
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MXPAND,10, , ,0
LUMPM,0
PSTRES,0
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MODOPT,LANB,10,0,0, ,OFF
FLST,2,1,5,ORDE,1
FITEM,2,129
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/GO
DA,P51X,ALL,
FLST,2,223,5,ORDE,2
FITEM,2,1
FITEM,2,-223
DADELE,P51X,ALL
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ANTYPE,2
!*
MSAVE,0
!*
MODOPT,LANB,10
EQSLV,SPAR
MXPAND,10, , ,0
LUMPM,0
PSTRES,0
!*
MODOPT,LANB,10,0,0, ,OFF
FLST,2,1,5,ORDE,1
FITEM,2,127
!*
/GO
DA,P51X,ALL,
FLST,2,1,5,ORDE,1
FITEM,2,128
!*
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DA,P51X,ALL,
FLST,2,1,5,ORDE,1
FITEM,2,129
!*
/GO
DA,P51X,ALL,
FLST,2,1,5,ORDE,1
FITEM,2,130
!*
/GO
DA,P51X,ALL,
FLST,2,1,5,ORDE,1
FITEM,2,131
!*
/GO
DA,P51X,ALL,
FLST,2,1,5,ORDE,1
FITEM,2,132
!*
/GO
DA,P51X,ALL,
FLST,2,1,5,ORDE,1
FITEM,2,133
!*
/GO
DA,P51X,ALL,
FLST,2,1,5,ORDE,1
FITEM,2,134
!*
/GO
DA,P51X,ALL,
/STATUS,SOLU
SOLVE
FINISH
/POST1
SET,LIST
SAVE
SAVE MPDATA,EX,1,,2.2e11
MPDATA,PRXY,1,,0.3
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,DENS,1,,7800
可能是单位不一致，自己先统一一下再试试。
单位没错，答案和上不同
兄弟，你的单位没错，我运行你的命令流，答案为：SET TIME/FREQ LOAD STEP SUBSTEPCUMULATIVE
1 0.20813E-03 1 1 1
216.086 1 2 2
334.133 1 3 3
481.212 1 4 4
591.559 1 5 5
6183.26 1 6 6
7202.25 1 7 7
8264.85 1 8 8
9318.93 1 9 9
10324.60 1 10 10 原帖由 venture 于 2006-10-9 13:14 发表
MPDATA,EX,1,,2.2e11
MPDATA,PRXY,1,,0.3
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,DENS,1,,7800
可能是单位不一致，自己先统一一下再试试。
这个单位没有问题，是国际单位制，kg、m、N
是统一的 十分感谢mdj219和其他各位，但是，我为什么计算的结果会和7楼有这么多的差距？
我不大会事哦那个命令流，算了几遍还是以前的结果。
不知道原因是什么？
谁能告诉我？！！
再次感谢！
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