Mass considerations for VIV driven cantilever beam and tethered buoy with internal pendulum

摘要

For resonance driven energy harvesting devices, mass considerations play a critical role in matching structural resonant frequency to flow driven Vortex Induced Vibration (VIV) frequencies for optimized vibration inputs. In this paper, we present: 1) experimental data showing how mass ratio can sustain “lock-in” effects for a cylinder oscillator in roughly 1 m/s flows and 2) analytical computations showing the effect of buoy and pendulum mass on matching resonant frequency to VIV frequency.