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Year:
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Issue:
STUDY ON MULTI-SCALE DAMAGE ANALYSIS FOR NONLINEAR STRUCTURES BASED ON BOUC-WEN MODEL
Author(s):
DING You-liang
,
LI Ai-qun
,
MIAO Chang-qing
Pages:
81
-
85
Year:
2007
Issue:
4
Journal:
JOURNAL OF VIBRATION AND SHOCK
Keyword:
损伤分析
;
非线性结构
;
小波变换
;
Bouc-Wen模型
;
多尺度分析
;
Abstract:
研究基于小波变换的非线性结构多尺度损伤特征提取方法.基于Bouc-Wen模型描述结构非线性损伤的时域演化特征,在此基础上分析结构动力响应的奇异性分析与时能密度分析对非线性结构损伤的时域识别能力.分析结果表明,结构动力响应的奇异性分析在非平稳激励输入和噪声影响下不能表征结构的时域损伤特征,而时能密度分析方法则具有良好的抗噪声干扰能力,可以有效地反映非线性结构系统刚度的时域变化过程.
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