摘要
The problem of vortex-induced vibrations in flexibly mounted cylinders and marine cables is addressed using a new laboratory apparatus, which combines force-feedback with on-line numerical simulation of a modeled structure. We establish correlation with published single-mode, free vibration data, and give results for a dynamic model having the principal characteristics of inclined cables, i.e. pairs of weakly coupled modes and crossover avoidance. While the fluid lift properties of the single-mode and multiple-mode systems are qualitatively similar, the spectra differ in several fundamental ways, suggesting distinct wake interaction processes.