Table 1 Comparison of natural frequencies for variable thickness plates.
Mode No: | ANSYS (irregular-shaped plate of Fig. 1) | *PS3 (rectangular plate) 374.3 mm × 350.0 mm | % error of PS3 rel. to ANSYS |
|---|---|---|---|
α = 0.154 degrees | |||
Frequency, f (Hz) | |||
1 | 88.53 | 73.96 | −16 |
2 | 140.16 | 177.46 | 26 |
3 | 236.22 | 192.34 | −18 |
4 | 249.57 | 295.83 | 18 |
5 | 344.21 | 349.97 | 1 |
6 | 413.81 | 389.62 | −5 |
7 | 444.96 | 468.34 | 5 |
8 | 456.21 | 493.12 | 8 |
9 | 563.58 | 591.47 | 4 |
10 | 594.85 | 665.62 | 11 |
11 | 715.58 | 665.82 | −6 |
12 | 730.73 | 709.84 | −2 |
13 | 747.94 | 769.32 | 2 |
14 | 823.84 | 907.13 | 10 |
15 | 836.42 | 941.83 | 12 |
nodes | 13978 | ||
elements | 1924 | ||
