Acoustic Pressure Waves in Vibrating 3-D Laminated Beam-Plate Enclosures

<table>Acoustic natural frequency profile for the case <svg height="13.0125" id="M117" style="vertical-align:-1.76814pt" version="1.1" viewbox="0 0 228.55 13.0125" width="228.55" xmlns="http://www.w3.org/2000/svg">
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<tspan style="font-size: 12.50px; " x="0" y="0">𝑚</tspan>
<tspan style="font-size: 12.50px; " x="12.340461" y="0">=</tspan>
<tspan style="font-size: 12.50px; " x="24.38085" y="0">6</tspan>
<tspan style="font-size: 12.50px; " x="30.632351" y="0">;</tspan>
<tspan style="font-size: 12.50px; " x="36.196186" y="0">𝑛</tspan>
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<tspan style="font-size: 12.50px; " x="57.913895" y="0">6</tspan>
<tspan style="font-size: 12.50px; " x="64.165398" y="0">;</tspan>
<tspan style="font-size: 12.50px; " x="69.729233" y="0">𝑘</tspan>
<tspan style="font-size: 12.50px; " x="79.981689" y="0">=</tspan>
<tspan style="font-size: 12.50px; " x="92.009575" y="0">6</tspan>
<tspan style="font-size: 12.50px; " x="98.261078" y="0">;</tspan>
<tspan style="font-size: 12.50px; " x="103.82491" y="0">𝑏</tspan>
<tspan style="font-size: 12.50px; " x="113.17715" y="0">=</tspan>
<tspan style="font-size: 12.50px; " x="125.21754" y="0">0</tspan>
<tspan style="font-size: 12.50px; " x="131.46904" y="0">.</tspan>
<tspan style="font-size: 12.50px; " x="134.59479" y="0">3</tspan>
<tspan style="font-size: 12.50px; " x="140.8463" y="0">;</tspan>
<tspan style="font-size: 12.50px; " x="146.39763" y="0">𝑐</tspan>
<tspan style="font-size: 12.50px; " x="155.06221" y="0">=</tspan>
<tspan style="font-size: 12.50px; " x="167.1026" y="0">0</tspan>
<tspan style="font-size: 12.50px; " x="173.3541" y="0">.</tspan>
<tspan style="font-size: 12.50px; " x="176.47984" y="0">8</tspan>
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Advances in Acoustics and Vibration

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Figure 5

Figure 5: Acoustic Pressure Waves in Vibrating 3-D Laminated Beam-Plate Enclosures 