Abstract
This paper presents an experimental investigation of the response characteristics of the pendulum motion of tandem cylinders undergoing Wake-Induced Vibrations (WIV), which was first devised by Lee et al. (2021). In this Pendulum System of Tandem Cylinders (PSTC), the downstream cylinder suspended from a pivot on the spanwise axis of the upstream cylinder oscillates in the circumferential direction in response to the incoming wake flow from the upstream cylinder. The governing parameters of the PSTC are the torsional spring stiffness, the cylinder spacing, and the moment of inertia of the system. The response characteristics for the WIV of the PSTC were measured experimentally by varying these main parameters. In addition, the relationship between two parameters, moment of inertia and torsional spring stiffness, was observed by changing individual values.
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