Vortex-Induced Vibration of Circular Cylinders. II: New Model
Vortex-Induced Vibration of Circular Cylinders. II: New Model
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DOI：
10.1061/(asce)0733-9399(1993)119:11(2288
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发表时间：
1993-11
期刊：
影响因子：
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通讯作者：
Indranil Goswami;R. Scanlan;N. P. Jones
中科院分区：
文献类型：
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作者：
Indranil Goswami;R. Scanlan;N. P. Jones
本文所作的分析工作与空气中圆柱涡激振动的新实验数据密切相关。实验数据在杂志前面的配套论文中提供。采用一种新的速度相关系数单自由度模型来模拟柔性支承圆柱的涡激振动。该模型为常微分方程型，具有自激、自限货车der Pol-type气动弹性阻尼对和气动弹性参数激励项。后一个术语是当前模式中的创新性补充。概述了模型方程的发展，随后对其进行了分析，并结合配套文件中报告的实验数据估计其参数。模型及其参数在分析中已被无量纲化，以便于普遍适用。
The analytical work presented in this paper closely follows the data obtained from new experiments on vortex-induced vibration of circular cylinders in air. The experimental data are presented in the companion paper preceding in the journal. The vortex-induced vibration of a flexibly supported circular cylinder is modeled by a new single-degree-of-freedom model with velocity-dependent coefficients. The model is of the ordinary differential equation type with a self-excited, self-limiting van der Pol–type aeroelastic damping pair and an aeroelastic parametric excitation term. The latter term is the innovative addition in the current model. The development of the model equations is outlined, following which it is analyzed and its parameters estimated in conjunction with the data from experiments reported in the companion paper. The model and its parameters have been rendered dimensionless in the analysis, to facilitate universal applicability.