@Article{jrm.2022.021531,
AUTHOR = {Si Chen, Yuhao Zhou, Sarah Mohrmann, Haiyan Fu, Yuying Zou, Zheng Wang},
TITLE = {Acoustics Performance Research and Analysis of Light Timber Construction Wall Elements Based on Helmholtz Metasurface},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {10},
YEAR = {2022},
NUMBER = {11},
PAGES = {2791--2803},
URL = {http://www.techscience.com/jrm/v10n11/48727},
ISSN = {2164-6341},
ABSTRACT = {Based on the efficient sound absorption characteristics of Helmholtz resonance structures in the range of medium
and low frequency acoustic waves, this paper investigates an effective solution for light timber construction walls
with acoustic problems. This study takes the light timber construction wall structure as the research object. Based
on the Helmholtz resonance principle, the structure design of the wall unit, impedance tube experiment and
COMSOL MULTIPHYSICS simulation calculation were carried out to obtain the change rule of acoustic performance of the Helmholtz resonance wall unit structure. The research results show that the overall stability of sound
insulation of the structure is improved, and the frequency range with sound transmission loss more than 50 dB in
the experimental group is 640–1600 Hz, while in the control group is 500–906 Hz and 1238–1600 Hz; the sound
absorption performance of the structure is obviously better than that of the ordinary structure, especially in the
low frequency acoustic wave range of 100–320 Hz, the sound absorption coefficient of the experimental group is
more than 0.49, while the sound absorption coefficient of the control group is less than 0.1. It is expected that
these results will contribute to the optimization of the acoustic performance of light timber construction walls
and have high application and popularization value.},
DOI = {10.32604/jrm.2022.021531}
}