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

報告人：安西月講師（航空學院航空航天交叉研究院）

時間：2019年12月5日（周四）14：30

地點：明故宮校區A18-209會議室

主辦單位：科協、航空學院、航空航天交叉研究院

報告內容摘要：

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.

報告人簡介：

安西月，南京航空航天大學航空學院講師。2019年6月博士畢業于河海大學固體力學專業，同年入職南京航空航天大學交叉研究院。2016年10月至2018年9月，在德國錫根大學聯合培養2年。主要從事聲學超材料理論模型分析、數值仿真和實驗測試等方面的研究，近五年發表SCI論文8篇,其中，第一作者6篇。