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模态试验激励点与响应点优化分析

徐飞 李传日 姜同敏 郭瑛

徐飞, 李传日, 姜同敏, 等 . 模态试验激励点与响应点优化分析[J]. 北京航空航天大学学报, 2013, 39(12): 1654-1659.
引用本文: 徐飞, 李传日, 姜同敏, 等 . 模态试验激励点与响应点优化分析[J]. 北京航空航天大学学报, 2013, 39(12): 1654-1659.
Xu Fei, Li Chuanri, Jiang Tongmin, et al. Optimization of excitation and measurement location in experimental modal test[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(12): 1654-1659. (in Chinese)
Citation: Xu Fei, Li Chuanri, Jiang Tongmin, et al. Optimization of excitation and measurement location in experimental modal test[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(12): 1654-1659. (in Chinese)

模态试验激励点与响应点优化分析

基金项目: 可靠性与环境国防科技重点实验室资助项目
详细信息
  • 中图分类号: TP3

Optimization of excitation and measurement location in experimental modal test

  • 摘要: 有限元模型和试验结果的相关性分析的关键问题之一是确定最优激励点.给出了利用有限元模型和基于模态参与理论的新准则选择模态试验最佳激励点的方法,该新准则被称为模态参与变异系数准则.结合印制电路板案例,分别利用新准则和模态参与理论选择了最优激励点和次优激励点,通过对比论证了提出的新准则的准确性.此外,利用了系统等效缩减/扩展方法,用模态置信准则和共位模态置信准则来揭示不恰当的测试点带来的误差.结合印制电路板案例分析了测试点的选择对相关性分析结果的影响.案例表明,选择更好的测试点能够得到更好的相关性分析结果.

     

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出版历程
  • 收稿日期:  2013-01-23
  • 网络出版日期:  2013-12-30

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