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Effects of tension on vortex-induced vibration (VIV) responses of a long tensioned cylinder in uniform flows
Kang L(康凌); Ge F(葛斐); Wu XD(武晓东); Hong YS(洪友士)
Source PublicationACTA MECHANICA SINICA
2017
Volume33Issue:1Pages:1-9
ISSN0567-7718
Abstract

The effects of tension on vortex-induced vibration (VIV) responses for a tension-dominated long cylinder with an aspect ratio of 550 in uniform flows are experimentally investigated in this paper. The results show that elevated tension suppresses fluctuations of maximum displacement with respect to flow velocity and makes chaotic VIV more likely to appear. With respect to periodic VIV, if elevated tension is applied, the dominant vibration frequency in the in-line (IL) direction will switch from a fundamental vibration frequency to twice the value of the fundamental vibration frequency, which results in a ratio of the dominant vibration frequency in the IL direction to that in the cross-flow direction of 2.0. The suppression of the elevated tension in the fluctuation of the maximum displacement causes the axial tension to become an active control parameter for the VIV maximum displacement of a tension-dominated long riser or tether of an engineering structure in deep oceans. However, the axial tension must be optimized before being used since the high dominant vibration frequency due to the elevated tension may unfavorably affect the fatigue life of the riser or tether.

DOI10.1007/s10409-016-0604-0
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Indexed BySCI ; EI ; CSCD
Language英语
WOS IDWOS:000394153000001
WOS KeywordTension Effect ; Maximum Displacement ; Dominant Vibration Frequency ; Chaos
WOS Research AreaEngineering ; Mechanics
WOS SubjectEngineering, Mechanical ; Mechanics
Funding OrganizationThis project was supported by the Construction Technology Program of the Ministry of Transport (Grant 2013 318 740050).
CSCD IDCSCD:5928107
DepartmentLNM金属材料微结构与力学性能
Classification二类
Ranking1
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60098
Collection非线性力学国家重点实验室
Corresponding AuthorGe F(葛斐); Hong YS(洪友士)
Recommended Citation
GB/T 7714
Kang L,Ge F,Wu XD,et al. Effects of tension on vortex-induced vibration (VIV) responses of a long tensioned cylinder in uniform flows[J]. ACTA MECHANICA SINICA,2017,33(1):1-9.
APA Kang L,Ge F,Wu XD,&Hong YS.(2017).Effects of tension on vortex-induced vibration (VIV) responses of a long tensioned cylinder in uniform flows.ACTA MECHANICA SINICA,33(1),1-9.
MLA Kang L,et al."Effects of tension on vortex-induced vibration (VIV) responses of a long tensioned cylinder in uniform flows".ACTA MECHANICA SINICA 33.1(2017):1-9.
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