Research Article
An Improved Fourier Series Method for the Free Vibration Analysis of the Three-Dimensional Coupled Beams
Table 1
The form of springs.
| | | The boundary springs at the right ends of beam | The coupling springs at the junction of beams and | The boundary springs at the left ends of beam |
| | -direction spring | | | | | -direction spring | | | | | -direction spring | | | | | Around -axis rotational spring | | | | | Around -axis rotational spring | | | | | Around -axis rotational spring | | | |
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