Abstract
A railway wheelset experiences the problem of hunting motion above a critical speed, which is known as a flutter-type self excited oscillation owing to a nonconservative contact force. In this study, a stabilization control method for the hunting motion using a gyroscopic damper is proposed. It is theoretically clarified by linear eigenvalue analysis that a gyroscopic damper is effective in increasing critical speed of the hunting motion. Furthermore, the experiments using a simple single-car apparatus are conducted. The experimental results show the validity of the gyroscopic damper for the stabilization of hunting motion.
