Damage Identification Method of Beam Structure Based on Modal Curvature Utility Information Entropy

doi:10.1155/2020/8892686

CORC > 兰州理工大学 > 兰州理工大学

	Damage Identification Method of Beam Structure Based on Modal Curvature Utility Information Entropy
	Xiang, Chang-Sheng 2; Li, Ling-Yun 2; Zhou, Yu 1; Yuan, Zi 2
刊名	ADVANCES IN CIVIL ENGINEERING
	2020-09-19
卷号	2020
ISSN号	1687-8086
DOI	10.1155/2020/8892686
英文摘要	Generally, the damage of the structure will lead to the discontinuity of the local mode shape, which can be well reflected by the modal curvature of the structure, and the local information entropy of the beam structure will also change with the discontinuity of the mode. In this paper, based on the information entropy theory and combining the advantages of modal curvature index in damage identification of beam structure, the modal curvature utility information entropy index is proposed. The modal curvature curves of nondestructive structures were obtained by fitting the modal curvature curves of damage structures with the gapped smoothing technique to avoid dependence on the baseline data of nondestructive structures. The index comprehensively reflects the damage state of the structure by calculating mutual weight change matrix and the weight-probability coefficient. The performance of the new index was verified by the finite element simulation and model test of simply supported beam, respectively. The results show that the modal curvature utility information entropy index takes advantage of the modal curvature index which is sensitive to damage and can overcome its shortcomings effectively. The index proposed can identify the damage location and damage degree accurately and has certain noise immunity, which provides an effective damage identification indicator for beam structures.
WOS研究方向	Construction & Building Technology ; Engineering
语种	英语
出版者	HINDAWI LTD
WOS记录号	WOS:000576074700003
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/155090]
专题	兰州理工大学
作者单位	1.Anhui Jianzhu Univ, Coll Civil Engn, Hefei 230601, Peoples R China 2.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China;
推荐引用方式 GB/T 7714	Xiang, Chang-Sheng,Li, Ling-Yun,Zhou, Yu,et al. Damage Identification Method of Beam Structure Based on Modal Curvature Utility Information Entropy[J]. ADVANCES IN CIVIL ENGINEERING,2020,2020.
APA	Xiang, Chang-Sheng,Li, Ling-Yun,Zhou, Yu,&Yuan, Zi.(2020).Damage Identification Method of Beam Structure Based on Modal Curvature Utility Information Entropy.ADVANCES IN CIVIL ENGINEERING,2020.
MLA	Xiang, Chang-Sheng,et al."Damage Identification Method of Beam Structure Based on Modal Curvature Utility Information Entropy".ADVANCES IN CIVIL ENGINEERING 2020(2020).