| 高压输电铁塔外伸臂振动力学模型及其振型局部化研究 |
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| 引用本文： | 苏继龙. 高压输电铁塔外伸臂振动力学模型及其振型局部化研究[J]. 振动与冲击, 1998, 17(3): 62-65 |
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| 作者姓名： | 苏继龙 |
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| 作者单位： | 福建农业大学机电工程系 福州350002 |
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| 摘 要： | 本文建立了高压输电铁塔外伸臂的振动力学模型,运用近频摄动理论详细分析了铁塔外伸臂的固有振动特性,并推出了铁塔外伸臂挂线上覆冰质量不等时发生振型局部化现象的判据,计算机的模拟计算结果证实了判据的正确性和可用性。
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| 关 键 词： | 高压输电塔 固有振动 振型局部化 判据 |
THE MECHANICAL MODEL OF OVERHANG ARMS OF TRANSMISSION TOWER AND STUDY ON ITS MODE LOCALIZATION |
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| Su Jilong The. THE MECHANICAL MODEL OF OVERHANG ARMS OF TRANSMISSION TOWER AND STUDY ON ITS MODE LOCALIZATION[J]. Journal of Vibration and Shock, 1998, 17(3): 62-65 |
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| Authors: | Su Jilong The |
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| Affiliation: | Su Jilong The department of mechanical and electrical engineering,FAU,Fuzhou,350002 |
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| Abstract: | The mechanical model of two arms of transmission tower is introduced in the paper. The natural vibration characteristics of the arms are analysed by using a perturbation method on a structure of nearly equal eigen frequencies. Emphasis is placed on the formulation of criterion that predicts the occurence of mode localization in arm structures with ice mass peturbated. The numerical results validate the correctness and feasibility of the criterion presented. |
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| Keywords: | transmisson tower natural vibration mode localization criterion |
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