Multi-mode Vortex-induced Vibration of Slender Cable Experiencing Shear Flow
文献类型：会议论文
| 作者 | Chen WM(陈伟民) ; Zheng ZQ; Li M; Chen WM(陈伟民)
|
| 出版日期 | 2010-10 |
| 会议名称 | 1st International Symposium on Archimedes Bridge |
| 会议日期 | 2010-10 |
| 会议地点 | Qiandao Lake |
| 通讯作者邮箱 | wmchen@imech.ac.cn |
| 关键词 | vortex-induced vibration mode internal wave shear flow wake-oscillator |
| 通讯作者 | 陈伟民 |
| 中文摘要 | 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. |
| 收录类别 | CPCI-S ; EI |
| 合作状况 | 其它 |
| 会议录 | ISAB-2010 - FIRST INTERNATIONAL SYMPOSIUM ON ARCHIMEDES BRIDGE Book Series: Procedia Engineering Volume: 4 Pages: 145-152
 |
| 语种 | 英语 |
| WOS记录号 | WOS:000287149600015 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/44081]  |
| 专题 | 力学研究所_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]. 见:1st International Symposium on Archimedes Bridge. Qiandao Lake. 2010-10. |
入库方式： OAI收割
来源：力学研究所
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