Vibroacoustic Analysis of a Rectangular Enclosure Bounded by a Flexible Panel with Clamped Boundary Condition

Figure 4

(a) Ratio between the sound field energy and panel vibration energy for two acoustical modes: (0,0,1) enclosure-controlled mode and (3,1) panel-controlled mode. (b) Resonance frequencies of two acoustical modes, the (0,0,1) uncoupled enclosure mode, and the (3,1) panel mode. (c) 60 dB modal decay time 𝑇_𝐿. (d) Resonance frequencies of two acoustical modes with different truncation numbers. 𝐿_𝑍=0.6 m, 𝑇_𝑝𝑀=0.5 s, 𝑇_𝑎𝑁=15 s.

(a)

(b)

(c)

(d)