| 加肋板结构中弹性波一维局部问题的研究 |
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| 引用本文： | 李凤明,胡超,黄文虎.加肋板结构中弹性波一维局部问题的研究[J].中国航空学报,2002,15(4):208-212. |
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| 作者姓名： | 李凤明 胡超 黄文虎 |
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| 作者单位： | Dept. of Aerospace Engineering and Mechanics，Harbin Institute of Technology，Harbin 150001，China |
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| 基金项目： | National Natural Science F oundation of China (19972 0 18) and Projectsupported by the National Key Basic Research Foun-
dation of China (G19980 2 0 3 17) |
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| 摘 要： | 分析研究了失谐周期多跨加肋板结构中的弹性波一维局部化问题。采用传递矩阵方法给出了系统的传递矩阵 ,并采用 Wolf提出的计算连续型动力系统中 Lyapunov指数的方法 ,给出了局部化因子的计算表达式。作为算例 ,给出了失谐加肋板结构中局部化因子的数值结果 ,并分析了跨长的失谐程度及结构参数对弹性波局部化的影响
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| 关 键 词： | 加肋板 波动局部化 传递矩阵法 Lyapunov指数 局部化因子 |
| 收稿时间： | 17 June 2002 |
One-Dimensional Localization of Elastic Waves in Rib-Stiffened Plates |
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| LI Feng-ming,Hu Chao,HUANG Wen-hu.One-Dimensional Localization of Elastic Waves in Rib-Stiffened Plates[J].Chinese Journal of Aeronautics,2002,15(4):208-212. |
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| Authors: | LI Feng-ming Hu Chao HUANG Wen-hu |
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| Institution: | Dept. of Aerospace Engineering and Mechanics, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | The 1 dimensional localization of elastic waves in disordered periodic multi span rib stiffened plates is investigated. The transfer matrix method is employed to obtain the transfer matrix of the system, and the method for calculating the Lyapunov exponents in continuous dynamic systems presented by Wolf is used to determine the localization factor. As examples, the numerical results of the localization factors are given for a disordered rib stiffened plate. The effects of the degree of disorder of span length and the structural parameters on the elastic wave localization are analyzed. |
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| Keywords: | rib stiffened plate wave localization transfer matrix method Lyapunov exponent localization factor |
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