Damage identification of tube bundles with crack subjected to cross-flow and loose support

doi:10.1016/j.ymssp.2021.108293

IMECH-IR > 流固耦合系统力学重点实验室

	Damage identification of tube bundles with crack subjected to cross-flow and loose support
	Lu LL(路玲玲)1,2 ; Lai J(赖姜)3 ; Yang, Shihao3 ; Song HW(宋宏伟)1,2 ; Sun, Lei 3
通讯作者	Lai, Jiang(laijiang1983@163.com)
发表期刊	MECHANICAL SYSTEMS AND SIGNAL PROCESSING
	2022-02-01
卷号	164 页码:14
ISSN	0888-3270
摘要	Dynamic characteristics of tube bundles with crack subjected to cross-flow and nonlinear loose support are very complicated, making the damage identification more difficult, and the information of healthy tube bundles could not be used in the damage identification process. In this paper, a baseline-free damage detection method is proposed to detect the crack damage of tube bundles subjected to cross-flow and loose support. Two damage indexes, based on the root mean square value of structural vibration responses and the gapped smoothing method, are proposed to identify the damage location and damage extent. Cases with different damage locations and damage extents are considered. The influences of the flow pitch velocity, loose support and the number of measure points on the effectiveness of the method are also discussed. The results showed that the index based on the normalized values of root mean square displacement and velocity responses can identify the damage location accurately within the flow pitch velocity range considered in this study. An improved index based on the normalized values of root mean square displacement and velocity responses and a parameter reflecting damage extent can identify the damage extent when the flow pitch velocity is small. When the flow pitch velocity is large, the effectiveness of the improved index is affected. Meanwhile the loose support location also has an influence on the proposed method, especially when the flow pitch velocity is large. Number of measure points has little influence when the damage extent is larger than 5%.
关键词	Damage identification Baseline-free Nonlinear dynamics Tube bundles Two-phase flow
DOI	10.1016/j.ymssp.2021.108293
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000687239500003
关键词[WOS]	FATIGUE-CRACK ; BEAM ; INSTABILITY
WOS研究方向	Engineering
WOS类目	Engineering, Mechanical
资助项目	National Natural Science Foundation of China[11972033] ; National Natural Science Foundation of China[12072336] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22000000]
项目资助者	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
论文分区	一类
力学所作者排名	1
RpAuthor	Lai, Jiang
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/87366
专题	流固耦合系统力学重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Nucl Power Inst China, Chengdu 610213, Peoples R China
推荐引用方式 GB/T 7714	Lu LL,Lai J,Yang, Shihao,et al. Damage identification of tube bundles with crack subjected to cross-flow and loose support[J]. MECHANICAL SYSTEMS AND SIGNAL PROCESSING,2022,164:14.
APA	路玲玲,赖姜,Yang, Shihao,宋宏伟,&Sun, Lei.(2022).Damage identification of tube bundles with crack subjected to cross-flow and loose support.MECHANICAL SYSTEMS AND SIGNAL PROCESSING,164,14.
MLA	路玲玲,et al."Damage identification of tube bundles with crack subjected to cross-flow and loose support".MECHANICAL SYSTEMS AND SIGNAL PROCESSING 164(2022):14.

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