대한기계학회논문집 (Transactions of the Korean Society of Mechanical Engineers)
- 제17권10호
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- Pages.2491-2497
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- 1993
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- 1225-5963(pISSN)
DOI QR Code
연결된 보의 랜덤진동해석
Random Vibration of Coupled Beams
초록
Random vibration of the coupled identical beams subject to band-limted white noise is studied. The mean-square displacements average dspatially over each beam are derived analytically using two different modal analysis techniques and compared to the results by SEA(Statistical Energy Analysis). It is shown that when frequency is high and a large number of modes are included in the frequency band, the modal analysis methods and the SEA yield the same results provided that the loss factors are very small and the modal separation is much larger than the half-power bandwidth.