The simulation calculation of acoustics energy transfer through the material structure

Peter Zvolenský, Alžbeta Pultznerová, Juraj Grenčík, V. Andreev
2016 MATEC Web of Conferences  
The paper deals with the modification of the rail passenger coach floor design aimed at improvement of sound reduction index. Refurbishing was performed by using a new acoustic material with a filamentary microstructure. The materials proposed in research were compared by simulation calculation of acoustic energy transfer trough porous microstructure of filamentary material, and the effect of material porosity on sound reduction index and sound absorption coefficient were observed. This
more » ... filamentary material can be used in the railway bed structure, too. High degree of noise absorbing, resistance to climate conditions, low specific mass, enable to choose a system of low anti-noise barriers having similar properties as standard high anti-noise walls..
doi:10.1051/matecconf/20168604001 fatcat:wjkko43jmfg5lbjjlsces3yepe