大弹模量比率声子晶体在建筑隔声中的应用

The application of phononic crystals with high contrast of elastic in the building sound insulation field

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,探讨了构建一维声子晶体用于隔断和屏蔽人体敏感噪声的可能性,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,满足人们要求的隔声频率。

It analyses the band structure of one dimension phononic crystals with high contrast of elastic by use of the lumped-mass approach, dissusses the impossiable to create the single and the compoite phononic crystals in order to separate the noises. The analysis showes by the reasonable material collocation that basing on the high contrast of elastic we can design the phononic crystals which low the first frequent of the band structure and meet people sound insulation frequency.