Research Article

Modelling Bending Wave Transmission across Coupled Plate Systems Comprising Periodic Ribbed Plates in the Low-, Mid-, and High-Frequency Ranges Using Forms of Statistical Energy Analysis

Table 1

Material properties and plate dimensions.
(a)

L-junction AL-junction BL-junction CThree coupled plates

Plate 1 (m)1.2 × 0.8 × 0.011.2 × 0.8 × 0.011.2 × 0.8 × 0.011.2 × 0.8 × 0.01
(m)N/A0.0250.0250.025
(m)N/A0.030.030.03
(m)N/A0.150.150.15

Plate 2 (m)1.0 × 0.8 × 0.011.0 × 0.8 × 0.011.2 × 1.0 × 0.011.0 × 0.8 × 0.01
(m)0.060.06N/AN/A
(m)0.010.01N/AN/A
(m)0.10.1N/AN/A

Plate 3 (m)N/AN/AN/A1.2 × 1.0 × 0.01

(b)

PerspexDensity (kg/m3)1218
Quasi-longitudinal phase speed (m/s)2045
Poisson’s ratio (—)0.3
Internal loss factor (—)0.06