Abstract
Hanshin Awaji Earthquake (1995) caused enormous damage to Container Cranes at Kobe Harbor in Japan. After that, the horizontal type of vibration isolation system has been applied to the container crane as well as buildings and bridges. This paper presents a rocking type of vibration isolation system and its performance is investigated by nonlinear transient analysis of 3-D FEM comparing the horizontal type of vibration isolation system. The results of real size FEM analysis shows the availability of the rocking type of vibration isolation system as well as horizontal type of one. And we shows that the optimal damping parameter is determined by the conventional model of the rocking type of vibration isolation system.
