Nonlinear dynamics of a fluid-conveying pipe under the combined action of cross-flow and top-end excitations

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• 作者：Fang He^a ; Huliang Dai^b ; ^{daihulianglx@hust.edu.cn} ; Zhenhua Huang^c ; Lin Wang^b
• 关键词：Fluid-conveying pipes ; Vortex-induced vibrations ; Resonant frequency ; Lock-in ; Quasi-periodic response ; Top-end excitation
• 刊名：Applied Ocean Research
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：62
• 期：Complete
• 页码：199-209
• 全文大小：3576 K
• 卷排序：62

文摘

Quasi-static displacement is used to describe the pipe vibration due to the top-end excitation. The combined actions of the internal flows and top-end excitation can significantly increase or decrease the VIV amplitude of the pipe. The sudden transition between quasi-periodic and periodic responses can be observed when the cross-flow speed is in the lock-in region.