Research Article
Modeling and Eigenfrequency Analysis of Sound-Structure Interaction in a Rectangular Enclosure with Finite Element Method
Table 2
Comparison eigenfrequency analysis between simulations, analytical and experimental results.
| mode | Finite element | Analytical | Experiment | FEM | FEM | modelling (FEM) | error 1% | error 2% | using COMSOL | versus | versus | software | analytical | experimenta |
| 1 | 55.11 | 40.9 | 50.1 | 25.7848 | 9.0909 | 2 | 82.74 | 72.4 | 74 | 12.4970 | 10.5632 | 3 | 116.2 | 93.3 | 91.5 | 19.7074 | 21.2565 | 4 | 138.03 | 123.1 | 119.5 | 10.8165 | 13.4246 | 5 | 147.01 | 124.1 | 124.5 | 15.5840 | 15.3119 | 6 | 196.81 | 174.7 | 172 | 11.2342 | 12.6061 | 7 | 216.39 | 194.4 | 192 | 10.1622 | 11.2713 | 8 | 227.59 | 203.3 | 194.05 | 10.6727 | 14.7370 | 9 | 243.87 | 241.8 | 235 | 0.8488 | 3.6372 | 10 | 283.28 | 251.2 | 245 | 11.3245 | 13.5131 | 11 | 289.25 | 283.3 | 275.5 | 2.0570 | 4.7537 | 12 | 293.49 | 319.5 | 313 | 8.8623 | 6.6476 | 13 | 323.72 | 342.3 | 338 | 5.7395 | 4.4112 | 14 | 342.03 | 359 | 352 | 4.9616 | 2.9149 | 15 | 370.58 | 380.5 | 374 | 2.6769 | 0.9229 | 16 | 382.35 | 405.1 | 395.5 | 5.9500 | 3.4393 |
| Average of errors % | | ā | | 9.929963 | 9.281338 |
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