In this work, we investigate the dynamics of vortex-induced vibration of an elastically
mounted cylinder with very low values of mass and damping. We use two methods to
investigate this canonical problem: first we calculate the instantaneous phase between the
cylinder motion and the fluid forcing; second we decompose the total hydrodynamic force
into drag and lift components that act along and normal to, respectively, the instantaneous
effective angle of attack. We focus on the phase dynamics in the large-amplitude–response …