Research Article
Modeling and Eigenfrequency Analysis of Sound-Structure Interaction in a Rectangular Enclosure with Finite Element Method
Table 1
Comparison eigenfrequencies between finite element model with analytical results in [
3] for uncoupled system.
| Mode | Analytical | Finite element (COMSOL) | Error % | Panel | Enclosure | Panel | Enclosure |
| (1,1) | 41.6 | — | 44.28 | — | 6.0524 | (1,2) | 73.7 | — | 75.66 | — | 2.5905 | (2,1) | 95.0 | — | 103.19 | — | 7.9368 | (2,2) | 124.6 | — | 127.05 | — | 1.9284 | (1,0,0) | — | 281.3 | — | 281.12 | 0.0640 | (0,0,1) | — | 337.6 | — | 338.98 | 0.4071 | (0,1,0) | — | 375.1 | — | 379.64 | 1.1959 | (1,0,1) | — | 439.5 | — | 446.27 | 1.5170 | (1,1,0) | — | 468.9 | — | 479.60 | 2.2310 | (1,0,0) | — | 504.7 | — | 511.83 | 1.3930 | (1,1,1) | — | 577.8 | — | 578.96 | 0.2004 |
| Error % | 2.3197 |
|
|