Research Article
In-Plane Vibration Analysis of Square Plate with Multiple Cutouts
Table 1
The natural frequencies of the rectangular plate with an inner cutout.
| | Mode | M = N = 30 | M = N = 32 | M = N = 34 | M = N = 36 | M = N = 40 | FEM |
| | 1 | 978.6 | 978.3 | 978.0 | 977.7 | 977.3 | 973.98 | | 2 | 1003.4 | 1003.4 | 1003.4 | 1003.4 | 1003.4 | 1003.3 | | 3 | 1162.6 | 1162.5 | 1162.5 | 1162.4 | 1162.3 | 1161.9 | | 4 | 1453.6 | 1453.3 | 1453.0 | 1452.8 | 1452.5 | 1449.8 | | 5 | 1634.8 | 1634.4 | 1634.2 | 1634.0 | 1633.6 | 1631.1 | | 6 | 1637.7 | 1637.5 | 1637.5 | 1637.4 | 1637.2 | 1636.5 | | 7 | 1660.3 | 1660.3 | 1660.3 | 1660.3 | 1660.3 | 1660.2 | | 8 | 1921.5 | 1921.3 | 1921.1 | 1920.9 | 1920.6 | 1918.7 | | 9 | 2013.1 | 2013.0 | 2013.0 | 2012.9 | 2012.8 | 2012.3 | | 10 | 2023.6 | 2023.2 | 2023.0 | 2022.6 | 2022.1 | 2018.6 | | 20 | 2737.2 | 2737.0 | 2736.9 | 2736.8 | 2736.6 | 2735.6 | | 50 | 3939.1 | 3938.7 | 3938.5 | 3938.2 | 3937.9 | 3937.0 | | 100 | 5489.0 | 5488.3 | 5488.1 | 5488.0 | 5487.8 | 5488.2 |
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