Civil Engineering Reference
In-Depth Information
Table 12.1
Parameters of the plate - foam system.
Material Thickness,
φσ
ρ
1
∝
E
ν
s
(N s/m
4
)
m) (kg/m
3
)
(Pa)
h
(mm)
(
µ
m) (
µ
6
.
9
×
10
10
Panel
1
2742
0.3
0.007
0.99 10
.
9
×
10
3
80
×
10
3
Foam 1
variable
1.02 100
130
8.8
0.35 0.14
40
35
30
25
20
15
10
Prediction: TMM
Prediction: FTMM
Test
5
0
10
3
10
4
10
Frequency (Hz)
Figure 12.3
Transmission loss of a plate system; effect of size correction.
60
50
40
30
20
Prediction: TMM
Prediction: FTMM
Test (Foam1)
10
0
10
2
10
3
10
4
Frequency (Hz)
Figure 12.4
Transmission loss of a plate - foam system.
