超材料消波混凝土板在二维平面波作用下的削波效应研究

郜英杰1,范华林2,张蓓1,金丰年1

振动与冲击 ›› 2018, Vol. 37 ›› Issue (20) : 39-44.

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (20) : 39-44.
论文

超材料消波混凝土板在二维平面波作用下的削波效应研究

  • 郜英杰1,范华林2,张蓓1,金丰年1
作者信息 +

Wave attenuation of super-material wave absorbing concrete panel subjected to two-dimensional plane wave

  • GAO Yingjie1,FAN Hualin2,ZHANG Bei1,JIN Fengnian1
Author information +
文章历史 +

摘要

局域共振型声学超材料能有效过滤某一特定频段的声波,基于此消波原理,将局域共振结构与混凝土材料结合在一起,设计一种超材料消波混凝土(Super - material wave absorbing concrete简称SMWAC)板,分析其消波原理。通过LS-dyna软件进行数值模拟,比较普通混凝土板与SMWAC板的消波效果,分析SMWAC板的隔层材料、聚合体尺寸及聚合体排列方式对SMWAC板消波效果的影响。数值模拟结果表明:1)SMWAC板与普通混凝土板相比具有较好的消波效果。2)隔层材料的不同使SMWAC板具有选择性消波特性。3)在各组分所占比例相同的情况下,SMWAC板中聚合体尺寸较大时,消波效果更明显。4)聚合体矩阵排列的SMWAC板与交错排列的SMWAC板消波效果一样。

Abstract

Local resonant acoustic material can filter some specific frequencies of sound waves.Based on the wave absorption theory, the article combines local resonant structure with the concrete material, a super-material wave absorption concrete (SMWAC) slab was designed.Its wave absorbing effect was then analyzed.Through numerical simulation using LS-dyna software, the wave absorbing effect was contrasted between a common concrete slab and the SMWAC slab.It was analyzed that how the coating material, aggregation size and the aggregation arrangement influence wave absorbing effect.The simulation result reveals that the SMWAC slab has strongly obvious wave absorbing effect contrasted with common concrete.The SMWAC slab has optional wave absorbing capability due to the difference of coating material.A bigger size of aggregation in the SMWAC slab makes the wave absorbing effect more obvious in the case that each component has the same ratio.The wave absorbing effect is almost the same between a rectangular SMWAC slab and an interlaced SMWAC slab.
 

关键词

超材料 / 消波 / 混凝土 / 振动波

Key words

super-material / wave absorbing / concrete / vibration wave

引用本文

导出引用
郜英杰1,范华林2,张蓓1,金丰年1. 超材料消波混凝土板在二维平面波作用下的削波效应研究[J]. 振动与冲击, 2018, 37(20): 39-44
GAO Yingjie1,FAN Hualin2,ZHANG Bei1,JIN Fengnian1. Wave attenuation of super-material wave absorbing concrete panel subjected to two-dimensional plane wave[J]. Journal of Vibration and Shock, 2018, 37(20): 39-44

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