Abstract
This paper describes a new vibration reduction device utilizing elastic body as dynamic vibration absorber. In case the devise is applied for railway vehicle carbody, it is necessary to design the shape and material of elastic body. Therefore, finite element method (FEM) simulation is applied to compute a vibration property of arbitrary-shaped elastic body. In this study, at first, the validity of an FEM simulation is verified by comparing experimental result for elastic cylindrical vessels. Then, a torus vessel models as an example of arbitrary-shaped elastic body is investigated. Vibration property of the model is computed and method to estimate its natural frequency is studied. Furthermore, a torus model whose natural frequency fits to a target frequency is designed and its vibration damping effect as a dynamic vibration absorber is computed by FEM simulation.
