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Alternative TitleDamage detection of structures with interval uncertain parameters
杨君坦; 邱志平; 李琦
Source Publication北京航空航天大学学报
Indexed ByEI ; CSCD
EI Accession number20163202690949
Contribution Rank2
Funding Organization国家自然科学基金(11372025,11432002) ; 国防基础科研项目(A0820132001) ; 高等学校学科创新引智计划(B07009)
Keyword损伤识别 不确定参数 区间分析 有限元法 模态分析
Other AbstractTo deal with structures with uncertain parameter which often lacks sufficient statistical information in damage detection, the uncertain parameters were modeled as interval numbers. The structural strain modal testing method was introduced using finite element method, and the strain modal was further expressed as the function of the interval parameter. Combined with the first order Taylor expansion and interval analysis, the range of each strain modal under parameter uncertainty is estimated, and thus we obtained an approach for structural damage detection considering uncertainty. Comparison between the proposed method and the traditional probabilistic method was conducted. Numerical simulations of a simply supported beam under different damage were performed by investigating the change of strain modes due to different damage levels and uncertainty levels. The influence rules of damage and uncertainty on strain modal were obtained, and a brief discussion of the impact of noise on damage detection was performed. The work of this paper provides a new technique and thought for damage detection of uncertain structures.
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Author邱志平
Recommended Citation
GB/T 7714
杨君坦,邱志平,李琦. 含区间参数不确定结构的损伤识别方法[J]. 北京航空航天大学学报,2016,42(7):1509-1517.
APA 杨君坦,邱志平,&李琦.(2016).含区间参数不确定结构的损伤识别方法.北京航空航天大学学报,42(7),1509-1517.
MLA 杨君坦,et al."含区间参数不确定结构的损伤识别方法".北京航空航天大学学报 42.7(2016):1509-1517.
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