Multi-mode Vortex-induced Vibration of Slender Cable Experiencing Shear Flow

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)
会议录名称	ISAB-2010 - FIRST INTERNATIONAL SYMPOSIUM ON ARCHIMEDES BRIDGE Book Series: Procedia Engineering Volume: 4 Pages: 145-152
	2010-10
会议名称	1st International Symposium on Archimedes Bridge
会议日期	2010-10
会议地点	Qiandao Lake
摘要	The 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.
关键词	Vortex-induced Vibration Mode Internal Wave Shear Flow Wake-oscillator
WOS记录号	WOS:000287149600015
收录类别	CPCI-S ; EI
语种	英语
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/44081
专题	环境力学重点实验室(2009-2011)
通讯作者	Chen WM(陈伟民)
推荐引用方式 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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