基于随机振动响应互相关函数的结构损伤识别试验分析

雷家艳; 姚谦峰; 雷鹰; 刘朝

振动与冲击 ›› 2011, Vol. 30 ›› Issue (8) : 221-224,.

PDF(1321 KB)
PDF(1321 KB)
振动与冲击 ›› 2011, Vol. 30 ›› Issue (8) : 221-224,.
论文

基于随机振动响应互相关函数的结构损伤识别试验分析

  • 雷家艳1,2; 姚谦峰1; 雷鹰2; 刘朝2

作者信息 +

A Structural Damage Detection Method Based on Correlation Function From Vibration Measurements

  • Jia-yan Lei1,2; Qian-feng Yao1; Ying Lei2; Chao Liu2
Author information +
文章历史 +

摘要

提出了基于结构振动响应互相关函数分析的损伤识别方法。通过八层剪切型钢框架结构模型在模拟白噪声随机激励作用下的试验分析,利用相邻测点响应的互相关函数幅值向量变化,构造损伤识别因子进行结构损伤判定、定位及程度量化,结果表明该方法对结构损伤的识别具有很好的简易性及有效性,并为结构在线监测和分散式检测提供方法参考。

Abstract

A structural damage identification technique based on correlation function analysis of vibration measurements is proposed. An 8-storey steel shear building model has been chosen as the case verification. The results demonstrate that accident change of correlation function amplitudes can be used to locate the damage by comparing the shape changes of damaged and undamaged samples. The value of is effective to determinate that whether the damage has happened or not, and it can be used as a reference method even for structural health monitoring on-line. The parameter K, defined to detect damage degree, corresponds to the theoretical damage level in different cases.

关键词

损伤识别 / 互相关函数 / 随机振动 / 振动试验

Key words

damage identification / correlation function / stochastic vibration / vibration test

引用本文

导出引用
雷家艳; 姚谦峰; 雷鹰; 刘朝. 基于随机振动响应互相关函数的结构损伤识别试验分析[J]. 振动与冲击, 2011, 30(8): 221-224,
Jia-yan Lei; Qian-feng Yao; Ying Lei; Chao Liu. A Structural Damage Detection Method Based on Correlation Function From Vibration Measurements[J]. Journal of Vibration and Shock, 2011, 30(8): 221-224,

PDF(1321 KB)

Accesses

Citation

Detail

段落导航
相关文章

/