Excitation and damping forces on a freely vibrating cylinder

Efstathios Konstantinidis, Jisheng Zhao, J. S. Leontini, David Lo Jacono, John Sheridan

Research output: Contribution to conferenceAbstract


Time-resolved measurements of the fluid forces acting on a circular cylinder undergoing vortex-induced vibration were conducted using a two-component force balance simultaneously with the displacement of the cylinder. The measured forces were analyzed into a component acting along the instantaneous direction of the relative velocity between the oscillating cylinder and the free stream and normal to that direction. The analysis shows that the former compo-nent acts as a damping force opposing the cylinder’s velocity whereas the latter component acts as an excitation force doing positive work on the cylinder.
Original languageEnglish
Number of pages2
Publication statusPublished - 2017
EventSymposium on Fluid-Structure-Sound Interactions and Control 2017 - Tokyo, Japan
Duration: 21 Aug 201724 Aug 2017
Conference number: 4th


ConferenceSymposium on Fluid-Structure-Sound Interactions and Control 2017
Abbreviated titleFSSIC 2017
Internet address

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