| 基础激励结构的试验模态分析 |
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| 引用本文： | 吴家驹,苏华昌,王晓晖.基础激励结构的试验模态分析[J].强度与环境,2010,37(4):28-35. |
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| 作者姓名： | 吴家驹 苏华昌 王晓晖 |
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| 作者单位： | 北京强度环境研究所,北京,100076 |
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| 摘 要： | 阐述了基础激励结构的试验模态分析理论和原理,引进了结构响应和界面力方程。给出了结构约束状态和自由状态下的结构响应与基础激励之间的关系式。讨论了界面力的直接和间接测量方法。用一个四自由度集中参数模型对两种方法进行了原理性试验验证。
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| 关 键 词： | 模态分析 基础激励 有效质量 视在质量 |
Experimental modal analysis of structures by base excitation |
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| Wu Jiaju,Su Huachang,Wang Xiaohui.Experimental modal analysis of structures by base excitation[J].Structure & Environment Engineering,2010,37(4):28-35. |
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| Authors: | Wu Jiaju Su Huachang Wang Xiaohui |
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| Institution: | Wu Jiaju Su Huachang Wang Xiaohui(Beijing Institure of Structure and Enviroment Engineering,Beijing 100076,China) |
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| Abstract: | The theory and the basic principles of experimental modal analysis of structures by base excitation are described.Equations for structural responses and the dynamic forces at interface are introduced.The relationship between the base excitation and structural responses is formulated for constraint and free boundary.The measure method of interface forces for direct and indirect method are discussed.Finally,a four degree of freedom lump parameter model is used principally to test and verify the presented method. |
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| Keywords: | modal analysis base excitation effective mass apparent mass |
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