Abstract
An experimental investigation on the coupled dynamics of a flexible floating anti-collision system is conducted to explore its violent responses in harsh wave conditions. Subjected to beam and oblique irregular waves, the buoy motions and mooring/connecting tensions are measured synchronously in a wave basin. The correlation between the relative motion of adjacent buoys and the connecting lines’ tensions is clarified considering various peak wave periods and significant wave heights. Particular attention is also paid on the strong nonlinearities of the connecting line tensions, which is closely associated with the relative surge and pitch between adjacent buoys. Based on the frequency spectra analysis, it is found that this multiple-wave-frequency characteristic is significantly affected by the wave obliquity, which provokes pronounced spikes in the connecting tensions for the heading angel of 45–90 deg. It is also demonstrated that the relative motions and the connecting tensions would be intensified due to wave conditions of shorter period.
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