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題名 | Bending Wave Propagation in a Finite Beam with Spatially Distributed Impedances=彎曲波在有阻抗分佈之樑上之傳遞 |
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作者 | 許榮均; 陳俊雄; | 書刊名 | 力學 |
卷期 | 9:4 1993.12[民82.12] |
頁次 | 頁277-283 |
分類號 | 448.533 |
關鍵詞 | 阻抗矩陣; 彎曲振動; 頻率響應; 濾波器; Impedance matrix; Bending vibration; Frequency response; Filter; |
語文 | 英文(English) |
中文摘要 | 彎曲波傳遞之阻抗矩陣在本文中正確導出,有關此方面之最初之文獻出現在 〔1〕。本文中詳細導證阻抗矩陣,並用一簡單樑之自然振動來驗證其正確性,並用有週期 及非週期阻抗之樑來展示其使用方式。此種型式之結構是有濾波之功能,至於不規則分佈阻 抗之樑此方法亦可用於探討其彎曲波傳播之特性。 |
英文摘要 | The impedance matrix for the bending vibration of a beam was precisely derived in this paper. The original results have been described in [1]. Detail derivation of this matrix was provided with a frequency response of a single span beam also being calculated so as to verify its validity. A multispan beam with periodic impedances was also provided for showing the application of this matrix. This type of structure was found to exhibit notch filter characteristics for the propagation of the bending waves. This method could aslo be applied towards those beams with nonperiodically distributed impedances. An example was also provided for examining the filter characteristics of such a beam with nonuniformly distributed impedances. |
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