Table 4 The first eight modal frequencies of the coupling system with elliptical panels.
Boundary | Frequency (Hz) | |||||||
---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
SSSS | ||||||||
Current | 26.825 | 40.365 | 42.853 | 45.716 | 65.160 | 66.633 | 66.757 | 68.253 |
ANSYS | 26.839 | 40.325 | 42.792 | 45.674 | 65.027 | 66.783 | 66.905 | 68.157 |
Error (%) | − 0.052 | 0.099 | 0.143 | 0.092 | 0.205 | − 0.225 | − 0.221 | 0.141 |
CCCC | ||||||||
Current | 12.970 | 25.449 | 26.488 | 39.053 | 44.030 | 44.139 | 46.104 | 52.856 |
ANSYS | 13.163 | 25.814 | 27.099 | 39.362 | 44.067 | 44.175 | 46.723 | 53.539 |
Error (%) | − 1.466 | − 1.414 | − 2.255 | − 0.785 | − 0.084 | − 0.081 | − 1.325 | − 1.276 |