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