Abstract
In this report,we propose optimal setting manner of an attenuate material for improving the performance of the L-shaped beam frame isolator.The isolator consists of two thin plate beams joined perpendicularly.One beam is fixed vertically to the base and the other is fixed horizontally.An isolation object is set at the joint.When the mass of the object exceeds the buckling load,these beams buckle and behave in the alternative of two buckling modes,that is,stable buckling mode and unstable mode.These buckling modes indicate softening non-linearity and we can get good performance in the vertical vibration isolation.However,vibration transmissibility at natural frequency high order becomes large,so it is necessary to reduce the transmissibility at high frequency.The purpose of this paper is considering the effective reduction method of transmissibility in cantilever,and then,we will apply the obtained results to the L-shaped beam frame isolator.
