Title :
Mass considerations for VIV driven cantilever beam and tethered buoy with internal pendulum
Author :
Liu, Wenxin ; D´Angelo, Brian
Author_Institution :
SPAWAR Syst. Center Pacific, San Diego, CA, USA
Abstract :
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.
Keywords :
beams (structures); cantilevers; energy harvesting; mass; oscillators; pendulums; vibrations; vortices; VIV driven cantilever beam; VIV frequencies; buoy mass; cylinder oscillator; internal pendulum; mass ratio; pendulum mass; resonance driven energy harvesting devices; resonant frequency matching; tethered buoy; vortex induced vibration; Energy harvesting; Equations; Mathematical model; Oscillators; Resonant frequency; Springs; Vibrations; Vortex Induced Vibrations; cylinder oscillator buoy; modeling; pendulum;
Conference_Titel :
Oceans - St. John's, 2014
Conference_Location :
St. John´s, NL
Print_ISBN :
978-1-4799-4920-5
DOI :
10.1109/OCEANS.2014.7003232
