Study on Rocking Vibration Characteristics by Free and Forced Vibration for Structures

Abstract

In order to investigate the behavior of rigid body by rocking vibration, free vibration experiment, excitation experiment by sine wave and numerical response analysis were conducted. As a result, free rocking vibration in which the period and amplitude of rocking vibration decrease due to temporal change, and the restitution coefficient decreases depend on amplitude. And, the overturning acceleration amplitude that a structure overturn, changes complicated depend on frequency. It was found that the repulsion coefficient greatly affects the rocking vibration at the nonstationary response.