Research Article

Dynamic Response of Soft Core Sandwich Beams with Metal-Graphene Nanocomposite Skins

Table 14

Frequencies Ω and loss factors . .

Model
FSDT-FSDT HSDT-FSDT HSDT-HSDT
Ω [Hz] [%]Ω [Hz] [%]Ω [Hz] [%]

No GNP’s29.06
178.17
496.16
968.50
1594.15
1.479
0.280
0.087
0.042
0.024
29.25
178.33
496.27
691.71
968.35
1.736
0.334
0.106
25.721
0.059
27.75
166.95
448.62
691.71
810.99
1.931
0.372
0.114
25.721
0.054

130.69
188.16
524.05
1022.98
1683.86
1.421
0.268
0.083
0.040
0.023
30.829
188.32
524.15
684.30
1022.78
1.678
0.321
0.102
26.281
0.058
29.27
176.38
474.15
684.30
857.43
1.851
0.355
0.109
26.281
0.0520

230.33
186.09
518.23
1020.27
1665.09
1.453
0.274
0.085
0.040
0.023
30.47
186.25
518.33
682.49
1011.38
1.716
0.328
0.104
26.421
0.059
28.93
174.44
468.89
682.49
847.87
1.893
0.363
0.111
26.421
0.053

0
(5%)
32.21
198.26
552.47
1078.57
1775.45
1.220
0.228
0.070
0.034
0.020
32.37
198.42
552.55
690.72
1078.31
1.440
0.273
0.087
25.795
0.052
30.70
185.84
499.87
690.72
903.94
1.602
0.304
0.094
25.795
0.046