Study on the properties of sound isolation for acoustic band gaps materials with tandem structure - Details

Author：

Huanyu, Zhao (Huanyu, Zhao.) | Cunfu, He (Cunfu, He.) (Scholars：何存富) | Ruiju, Wei (Ruiju, Wei.) | Bin, Wu (Bin, Wu.) | Guorong, Song (Guorong, Song.)

Indexed by：

EI Scopus

Abstract：

The　properties　of　band-gaps　for　two-dimensional　phononic　crystals　consisting　of　stainless　steel　cylinders　in　air　background　with　square　lattice,　triangular　lattice　and　honeycomb　lattice　are　investigated　theoretically　by　the　plane　wave　expansion　(PWE)　method,　respectively.　The　lattice　structures　play　the　key　role　in　determining　existence　of　band　gaps.　According　to　the　width　and　position　of　band　gaps　and　directions　of　lattices,　we　have　designed　a　new　type　of　acoustic　band-gap　materials　with　a　tandem　structure　of　three　kinds　of　lattice　structures　and　obtained　the　ultrawide　band　gaps　within　the　human　audible　range　of　frequencies.　So　this　composites　with　a　tandem　structure　can　stop　effectively　the　effect　of　environ-mental　noise　as　noise　barriers.　©　2010　IEEE.

Keyword：

Honeycomb structures Acoustic noise Energy gap Acoustic devices

Author Community：

[ 1 ] [Huanyu, Zhao]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Cunfu, He]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Ruiju, Wei]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Bin, Wu]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Guorong, Song]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China