Investigation of Wake-induced Vibration of Parallel Cables Based on Flutter Analysis

Abstract

There are so many parallel circular structures such as stay-cables bridge. Wake galliping and wake-induced flutter appear in such parallel circular structures. The research on wake galloping have been done so far, however the mechanism of wake-induced flutter has not perfectly been revealed. This research tris to crarify the relationship between the arrangement of 2 cylinders and mechanisms of these aero dynamic instabilities based on the vibration responce of the downstream cylinder gained from free vibration tests and 2 DOF flutter analysis.