Experiment and Simulation Analysis on Noise Attenuation of Al/MF Cylindrical Shells

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="10"><hr/></td></tr><tr class="thead"><td class="align_left">Mode</td><td class="align_center"><span style="width: 36.1402ptpx;"><svg height="11.439pt" id="M13" style="vertical-align:-2.15067pt" version="1.1" viewbox="-0.0498162 -9.28833 36.1402 11.439" width="36.1402pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M368 703H309L44 -163H104L368 703Z" id="g113-48"></path></g><g transform="matrix(.013,0,0,-0.013,5.361,0)"><path d="M238 681C243 705 239 712 230 712C217 712 156 682 75 674L70 648H105C148 648 153 641 144 598L39 110C18 11 35 -12 55 -12C90 -12 166 36 221 103L205 125C174 93 130 65 118 65C112 65 108 68 114 96L238 681Z" id="g113-109"></path></g><g transform="matrix(.013,0,0,-0.013,8.859,0)"><path d="M95 130C70 130 46 113 46 88C46 72 54 64 59 64C93 55 121 33 121 -3C121 -41 93 -68 44 -88L55 -117C117 -98 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270C275 450 212 609 64 710L45 686C145 604 203 442 203 270S147 -63 45 -147L64 -170C213 -68 275 89 275 270Z" id="g113-42"></path></g></svg></span></td></tr><tr><td class="thead-hr" colspan="10"><hr/></td></tr><tr><td class="align_left">Analytical value</td><td class="align_center">/Hz</td><td class="align_center">151.1</td><td class="align_center">192.2</td><td class="align_center">244.5</td><td class="align_center">302.2</td><td class="align_center">317.9</td><td class="align_center">352.1</td><td class="align_center">358.2</td><td class="align_center">398.0</td></tr><tr><td class="align_left">Simulation value</td><td class="align_center">/Hz</td><td class="align_center">151.1</td><td class="align_center">191.3</td><td class="align_center">243.8</td><td class="align_center">302.2</td><td class="align_center">317.2</td><td class="align_center">351.4</td><td class="align_center">357.7</td><td class="align_center">398.1</td></tr><tr><td class="align_left">Error</td><td class="align_center">/%</td><td class="align_center">0.00</td><td class="align_center">0.51</td><td class="align_center">0.31</td><td class="align_center">0.00</td><td class="align_center">0.23</td><td class="align_center">0.19</td><td class="align_center">0.15</td><td class="align_center">0.01</td></tr><tr class="table-tr"><td colspan="10"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Comparison of acoustic modes achieved by analytical method and simulation computation.

Shock and Vibration

tab2

Table 2

Table 2: Experiment and Simulation Analysis on Noise Attenuation of Al/MF Cylindrical Shells 