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題 名 | The Ray-Normal Mode Analysis of Transient Waves in a Finite Beam |
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作 者 | Keh,Der-ching; | 書刊名 | 復興學報 |
卷 期 | 1999.12[民88.12] |
頁 次 | 頁55-61 |
分類號 | 440.13 |
關鍵詞 | 暫態波; Ray-normal mode analysis; Transient waves; Finite beam; |
語 文 | 英文(English) |
英文摘要 | In this paper, we have applied the Fourier transform to derived the ray solution and normal mode solution for transient waves in a beam based on the Euler-Bernoulli theory. The ray method is known to be convenient for calculating the early response of waves in a infinite, semi-infinite and finite beam, and the normal mode method is suitable for long time response of a finite beam. Although the mathematical forms of two solutions are quite different, we have obtain nearly identical results by both methods for short and long time response of a finite beam. |
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