IMECH-IR  > 环境力学重点实验室(2009-2011)
Multi-mode Vortex-induced Vibration of Slender Cable Experiencing Shear Flow
Chen WM(陈伟民); Zheng ZQ; Li M; Chen WM(陈伟民)
Source PublicationISAB-2010 - FIRST INTERNATIONAL SYMPOSIUM ON ARCHIMEDES BRIDGE Book Series: Procedia Engineering Volume: 4 Pages: 145-152
2010-10
Conference Name1st International Symposium on Archimedes Bridge
Conference Date2010-10
Conference PlaceQiandao Lake
AbstractThe dynamic characteristics of slender cable often present serried modes with low frequencies due to large structure flexibility resulted from high aspect ratio (ratio of length to diameter of cable), while the flow velocity distributes non-uniformly along the cable span actually in practical engineering. Therefore, the prediction of the vertex-induce vibration of slender cable suffered from multi-mode and high-mode motions becomes a challenging problem. In this paper a prediction approach based on modal energy is developed to deal with multi-mode lock-in. Then it is applied to the modified wake-oscillator model to predict the VIV displacement and stress responses of cable in non-uniform flow field. At last, illustrative examples are given of which the VIV response of flexible cable in nonlinear shear flow field is analyzed. The effects of flow velocity on VIV are explored. Our results show that both displacement and stress responses become larger as the flow velocity increasing; especially higher stress response companied with higher frequency vibration should be paid enough attention in practical design of SFT because of its remarkable influence on structure fatigue life.
KeywordVortex-induced Vibration Mode Internal Wave Shear Flow Wake-oscillator
WOS IDWOS:000287149600015
Indexed ByCPCI-S ; EI
Language英语
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Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/44081
Collection环境力学重点实验室(2009-2011)
Corresponding AuthorChen WM(陈伟民)
Recommended Citation
GB/T 7714
Chen WM,Zheng ZQ,Li M,et al. Multi-mode Vortex-induced Vibration of Slender Cable Experiencing Shear Flow[C]ISAB-2010 - FIRST INTERNATIONAL SYMPOSIUM ON ARCHIMEDES BRIDGE Book Series: Procedia Engineering Volume: 4 Pages: 145-152,2010.
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