Research Article
Vibroacoustic Analysis of a Refrigerator Freezer Cabinet Coupled with an Air Duct
Table 8
First ten experimentally measured natural frequencies and the corresponding damping ratios of the fan louver and the evaporator cover.
| | Natural frequencies (Hz) | | Fan louver | Evaporator cover | | Hz | % | Hz | % |
| | 5.0 | 2.1 | 14.1 | 2.6 | | 37.0 | 2.4 | 18.8 | 1.7 | | 46.5 | 1.5 | 32.8 | 3.1 | | 55.5 | 2.5 | 56.3 | 2.2 | | 77.0 | 0.8 | 70.3 | 2.7 | | 104.0 | 1.3 | 79.7 | 1.3 | | 112.0 | 2.4 | 89.8 | 3.0 | | 129.0 | 4.1 | 101.0 | 3.2 | | 133.0 | 2.9 | 107.0 | 1.9 | | 149.0 | 3.1 | 114.0 | 3.1 |
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