多层一维声子晶体在建筑隔声中应用分析  

The analysis of one dimension phononic crystals with high contrast of elastic in the sound insulation field

作　　者：王海峰[1] 凡友华[1] 王海洋[1] 周梦平[1] 

机构地区：[1]哈尔滨工业大学深圳研究生院,广东深圳518055

出　　处：《中国建材科技》2008年第4期81-83,共3页China Building Materials Science & Technology

摘　　要：本文应用集中质量法分析了大弹性常数比率的一维声子晶体禁带带隙,发现弹性常数数量级相差越大,一维声子晶体的第一禁带初始频率越低。基于此种方法,分析了多层非金属/非金属一维声子晶体的隔声性能。分析表明:通过合理的材料搭配,此种基于大弹性比率的声子晶体复合结构能够有效地降低禁带的起始频率,同时声子晶体层数越多越能发挥其禁带的优势,达到人们所要求的隔声要求和目标。we calculate the band structure of one dimension phononic crystals with high contrast of elastic by use of the lumped-mass approach, and find out that the higher the contrast of clastic ,the lower the first band frequent .According to the this ,we design the single and the composite phononic crystals in order to separate the noises. The analysis show that basing on the high contrast of-elastic we can design the phononic crystals which low the first frequent of the band structure and increase the band width.

关 键 词：集中质量法 一维声子晶体 大弹性常数比率 隔声 

分 类 号：TU112.5[建筑科学—建筑理论]