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基于多轴振动环境试验的模态参数辨识 被引量：1

MODAL PARAMETER IDENTIFICATION BASED ON MULTI-AXIS VIBRATION ENVIRONMENT TEST
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摘要 基于平行多轴振动台环境试验数据,通过被测系统频域中的测点响应值与台面测点响应值之间的传递函数,导出估汁被测系统的频率响应函数的方法和公式,从而转化为一般的多输入多输出系统进行模态参数识别,并对各振动台输入信号谱相关性的影响和处理方法作了研究。仿真算例验证了方法的可行性和有效性。 Based on environmental test data of a parallel multi-axis vibration table,a method and formula are derived to estimate FRF of a structure through the acceleration transfer function formed by the ratio of the response at measuring point to that on the base.The problem can be transformed to a normal MIMO system for modal parameter identification.The effect caused by correlation of input signals and the processing method is also discussed.The effectiveness and feasibility of the proposed method is proved with simulation results.
作者 王轩 夏江宁 宋汉文
机构地区 复旦大学力学与工程科学系 北京强度环境研究所
出处 《振动与冲击》 EI CSCD 北大核心 2008年第4期52-55,共4页 Journal of Vibration and Shock
基金 国家自然科学基金资助(10772048)
关键词 环境试验 多轴振动试验 广义频响函数 模态参数识别 environment test multi-axis vibration test generalized FRF modal parameter identification
分类号 TH113.1 [机械工程—机械设计及理论] O32 [理学—一般力学与力学基础]
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共引文献65

同被引文献9

  • 1朱宏平,翁顺.运用小波分析方法进行结构模态参数识别[J].振动与冲击,2007,26(4):1-4. 被引量：11
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引证文献1

二级引证文献7

振动与冲击
2008年 第4期

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