题目：Investigation on the bandgap properties and vibration isolation performances of metalattice structures

报告人：安西月讲师（航空学院航空航天交叉研究院）

时间：2019年12月5日（周四）14：30

地点：明故宫校区A18-209会议室

主办单位：科协、航空学院、航空航天交叉研究院

报告内容摘要：

The discrete acoustic metamaterial (AM) models composed of mass-spring subsystems with multi or graded resonators and the continuous AM-based lattice model including a cross type core consisting of two segments namely with a radius jump discontinuity at the midspan in each rod are proposed. Wave propagation in the models is studied to investigate the dispersion relations and vibration bandgaps. Three dimensional (3D) AM-based metalattice structures consisting of beams were fabricated by selective laser sintering (SLS)-based 3D-printing technology. The bandgaps induced by local resonances and waveform transformations are obtained by calculating the band structure of the AM-based lattice structure using finite-element (FE) simulations and the results are verified by conducting experiments about vibration transmission.

报告人简介：

安西月，南京航空航天大学航空学院讲师。2019年6月博士毕业于河海大学固体力学专业，同年入职南京航空航天大学交叉研究院。2016年10月至2018年9月，在德国锡根大学联合培养2年。主要从事声学超材料理论模型分析、数值仿真和实验测试等方面的研究，近五年发表SCI论文8篇,其中，第一作者6篇。