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Shock and Vibration
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Shock and Vibration
/
2015
/
Article
/
Tab 3
/
Research Article
Active Structural Acoustic Control of Clamped Flat Plates Using a Weighted Sum of Spatial Gradients
Table 3
The first fifteen natural frequencies and mode shapes for the plate described in Table
2
.
Mode
Natural frequency (Hz)
1
1
1
86
2
1
2
128
3
1
3
204
4
2
1
214
5
2
2
253
6
1
4
299
7
2
3
327
8
2
4
406
9
3
1
410
10
1
5
430
11
3
2
452
12
3
3
531
13
2
5
538
14
1
6
583
15
3
4
599