Research Article
An Improved Fourier Series Method for the Free Vibration Analysis of the Three-Dimensional Coupled Beams
Table 5
Four cases of coupling condition for coupled beams.
| | Four cases | -direction spring | -direction spring | -direction spring | Around -axis rotational spring | Around -axis rotational spring | Around -axis rotational spring |
| | Case | 0 | 0 | 0 | 0 | 0 | 0 | | Case | | | | | | | | Case | | | | | | | | Case | | | | | | |
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