Abstract
In this report, we propose a simplified vibration isolator utilizing buckled beam and investigate the basic properties of proposed isolator. The isolator consists of two thin plate beams jointed perpendicularly. One beam is fixed vertically to the base and the other fixed horizontally. The mass of isolating object is supported at the joint of two beams. When vertical down force was applied at the joint of beams, this beam behaves in the alternative of two buckling modes, that is, stable buckling mode and unstable buckling mode. From the numerical analysis of the restoring force and the local stiffness of two buckling modes, we adopt unstable buckling mode to the isolator. The unstable buckling mode enables the isolator to have the property of high static stiffness and low dynamic stiffness. This report shows the basic property of this isolator by the numerical analysis by FEM and the experimental results.
