A wake oscillator for the modeling of vortex-induced vibration is presented in which the coupling term between the oscillator and the structural equation is written in the form of a convolution integral. In this way the potential to tune the model to measurements is extended greatly. The model is tuned to forced vibration measurements. Then, without changing the tuning parameters, the model is applied to simulate free vibration experiments. A good prediction of the maximum amplitude and the width of the lock-in range is found over a wide range of mass and damping ratios.

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