中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Damage identification of tube bundles with crack subjected to cross-flow and loose support

文献类型:期刊论文

作者Lu LL(路玲玲)2,3; Lai J(赖姜)1; Yang, Shihao1; Song HW(宋宏伟)2,3; Sun, Lei1
刊名MECHANICAL SYSTEMS AND SIGNAL PROCESSING
出版日期2022-02-01
卷号164页码:14
ISSN号0888-3270
关键词Damage identification Baseline-free Nonlinear dynamics Tube bundles Two-phase flow
DOI10.1016/j.ymssp.2021.108293
通讯作者Lai, Jiang(laijiang1983@163.com)
英文摘要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%.
分类号一类
WOS关键词FATIGUE-CRACK ; BEAM ; INSTABILITY
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]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000687239500003
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
其他责任者Lai, Jiang
源URL[http://dspace.imech.ac.cn/handle/311007/87365]  
专题力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位1.Nucl Power Inst China, Chengdu 610213, Peoples R China
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China;
3.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, 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.

入库方式: OAI收割

来源:力学研究所

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