噪声与振动控制

›› 2009, Vol. 29 ›› Issue (6): 37-39.DOI: 10.3969/j.issn.1006-1355.2009.06.037

• 论文 • 上一篇    下一篇

《基于面导纳的分布载荷识别》

靳亚峰，谢石林，张希农

  

  1. （西安交通大学航天航空学院，强度与振动教育部重点实验室，西安710049）
  • 收稿日期:2009-06-10 修回日期:1900-01-01 出版日期:2009-12-18 发布日期:2009-12-18
  • 通讯作者: 靳亚峰

《Distributed Load Identification of Structures Based on Surface Mobility》

JIN Ya-feng,XIE Shi-lin,ZHANG Xi-nong   

  1. (MOE Key Laboratory for Strength and Vibration, Xi’an Jiaotong University, Xi’an710049, China)
  • Received:2009-06-10 Revised:1900-01-01 Online:2009-12-18 Published:2009-12-18
  • Contact: JIN Ya-feng

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摘要：

引入面导纳的概念对结构的分布载荷进行识别。推导得到有限板的平均面导纳公式，并给出平均面导纳的数值计算方法。最后，结合复功率法给出了由子系统分布载荷的输入功率识别分布载荷的方法，通过数值仿真验证分布载荷识别方法的有效性和可行性。

关键词: 振动与波, 载荷识别, 面导纳, 统计能量分析, 分布载荷

Abstract:

The concept of surface mobility is introduced to study the identification of distributed loads based on SEA in the paper. The expressions of average surface mobility for the finite plate are derived. By discretizing the acting area, a numerical computation method for average surface mobility is developed. Finally, combining with the complex power method, an identification approach of load power spectrum of distributed loads from the input power of subsystem is set up. The proposed method is validated numerically through an example.

Key words: vibration and wave, load identification, surface mobility, statistical energy analysis, distributed load

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