Civil Engineering Reference
In-Depth Information
12
FEM
TMM
FTMM
10
8
6
4
2
0
10
2
10
3
Frequency(Hz)
Figure 13.7
Transmission loss of a 2-in-thick foam slab of dimensions 0
.
5
×
0
.
5m
excited by an oblique incidence plane wave (Atalla
et al
. 2006).
120
110
100
90
80
70
Exact
Plane wave approximation
In-vacuo
60
0
100
200
300
400
500
600
700
800
Frequency (Hz)
Figure 13.8
Mean-square velocity of a plate - foam system radiating in air.
