Low Frequency Vibration Isolation Performance of the Plate with Periodic Cylindrical Oscillators

The paper is devoted to the vibration reduction and isolation performance of a periodic structure with cylindrical vibrators. A plate with periodic oscillators was investigated using finite element technic. In the finite element analysis, test specimens were modelled with finite element software. With appropriate geometric and material parameters, the structure can obtain elastic wave band gaps, where vibrations are prohibited. So, the structure can be regarded as a kind of vibration isolation material. The dispersion curve and transmission spectrum of the structure were calculated to find the range of the band gaps. Both the longitudinal vibration and flexural vibration of the plate are studied. The results show that the designed plate with proper parameters has a low frequency range of band gaps. It has a wide application prospect in the field of low frequency vibration isolation.