Numerical Analysis of Vibration Attenuation and Bandgaps in Radially Periodic Plates

Abstract Objective Periodic configuration of mechanical and civil structures has shown great potential for noise vibration reduction. However, the use Cartesian coordinates in studying periodicity effects elastic overlooks benefits radially periodic configurations when dealing with wave propagation large flexible plates disturbed by a small source area. This paper presents an easy-to-use numerical approach to predicting bandgap characteristics polar coordinates. Methodology To demonstrate vibration-attenuation effect, we consider circular plate model. We adapted Wave Finite-Element method experiments existence attenuation effect. verify results, apply Floquet theory Results Conclusions Our findings indicate that theoretical results are excellent agreement considering new parameter introduces distance from origin. The presented here their model more complex