模态分析结果的分析
本帖最后由 Hmagnus 于 2015-1-23 18:35 编辑刚刚做了个仪表板系统的模态分析，提取了前30阶的模态，模型的总质量是3.36e-02,那么如何判定哪一阶是全局模态和局部模态呢。我一般是通过振型来判断，但是网上看有大神说通过输出有效质量来评判，这样可以从数据上确定全局模态。求大神们指导到底怎么判定全局模态，感谢万分.
MODAL EFFECTIVE MASS FOR SUBCASE 1
RIGID BODY MODES BASED ON REFERENCE POINT AT ORIGIN OF BASIC COORDINATE SYSTEM
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Mode Frequency X-TRANS Y-TRANS Z-TRANS X-ROTAT Y-ROTAT Z-ROTAT
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1 1.007E+013.763E-049.144E-072.402E-042.797E+012.366E+021.803E+01
2 1.398E+011.211E-067.381E-051.658E-081.801E+022.463E+002.939E+02
3 3.128E+015.231E-063.041E-074.400E-034.227E-018.314E+035.350E+00
4 3.380E+011.005E-049.335E-079.296E-053.248E+017.890E+021.401E+01
5 3.810E+012.619E-046.505E-044.783E-051.138E+032.449E+021.007E+03
6 3.976E+015.323E-034.378E-059.078E-051.036E+021.873E+044.576E+02
7 4.012E+013.190E-033.389E-054.811E-071.527E+029.945E+037.557E+01
8 4.230E+016.453E-042.284E-048.077E-051.123E+037.985E+021.096E+03
9 4.247E+018.391E-041.365E-041.699E-042.783E+028.343E+026.683E+02
10 4.388E+017.209E-055.458E-063.917E-041.283E+022.581E+031.674E+00
11 4.542E+018.430E-041.143E-041.812E-043.869E+015.339E+034.058E+02
12 4.657E+012.795E-073.974E-033.139E-041.087E+047.258E+021.077E+04
13 4.826E+013.637E-052.044E-051.756E-042.856E+021.021E+031.006E+02
14 5.047E+011.051E-031.607E-041.966E-037.573E+021.379E+042.797E+02
15 5.380E+015.065E-042.050E-042.276E-033.567E+022.078E+031.374E+02
16 5.550E+012.746E-055.949E-062.250E-053.306E+013.146E+023.643E+02
17 5.638E+011.790E-052.646E-062.764E-047.884E+011.045E+031.115E+00
18 5.725E+016.526E-047.122E-056.530E-053.871E+018.140E+023.942E+02
19 6.128E+013.019E-056.778E-047.203E-045.425E+022.887E+031.353E+03
20 6.194E+011.331E-063.291E-032.858E-048.907E+035.572E+021.098E+04
21 6.227E+012.396E-051.017E-032.450E-043.669E+031.051E+032.915E+03
22 6.287E+015.663E-041.165E-062.246E-043.144E+012.658E+021.873E+01
23 6.330E+014.895E-041.046E-041.630E-065.128E+011.011E+032.458E+02
24 6.426E+012.883E-045.681E-052.147E-041.055E+014.066E+001.497E+02
25 6.553E+011.803E-063.326E-084.639E-053.745E+001.748E+026.544E-01
26 6.682E+012.209E-055.883E-056.112E-051.210E+026.600E+029.155E+01
27 6.809E+012.893E-051.077E-042.448E-082.732E+024.719E+012.417E+02
28 6.927E+016.780E-058.202E-061.891E-043.450E+007.519E+013.519E+01
29 7.057E+018.194E-054.885E-062.196E-053.039E+002.899E+022.852E+00
30 7.168E+011.286E-033.851E-043.896E-031.029E+022.505E+042.208E+03
SUBCASE TOTAL 1.684E-021.144E-021.670E-022.934E+049.968E+043.433E+04
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能教我这个数据表格是怎么导出来的呢？谢谢
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