Способ уменьшения производственного шума

Abstract

Despite the presence of numerous organizational and technical methods and means of combating noise in production, as well as acoustic pollution in the field of environmental protection, the issue of reducing industrial noise remains relevant at present. An effective method of reducing noise in technical premises is to line the walls and ceilings with sound-absorbing panels. The use of sound-absorbing panels allows to minimize the effect of reflection of sound waves incident on hard enclosing surfaces, as well as reduce the transfer of sound energy to adjacent rooms or to the surrounding space. The methods of installation of sound-absorbing panels directly affect the acoustic characteristics of the sound-absorbing cladding. Sound absorption is enhanced when acoustic panels are placed at a certain distance from the surface of the enclosing floor. By adjusting the air gap between the back surface of the panel and the wall surface, it is possible to achieve fairly acceptable sound absorption characteristics in the low-frequency sound spectrum. An effective way to improve the acoustic characteristics of panel cladding is to use narrow-gap panel layouts, where the opposing end faces of adjacent panels are located with some air gap. In this case, the principle of diffraction edge effect is used, with sound waves bending around the end sections of the panel and further dissipative dissipation of acoustic energy in a porous sound-absorbing substance. However, the features of the relative position of sound-absorbing panels are not studied in sufficient detail, the dependence of the efficiency of sound absorption on the geometric dimensions of the air gaps between the panels is not assessed, which is the purpose of this study. During this process, the optimal geometric parameters of the relative position of sound-absorbing cladding panels were determined, which make it possible to increase the acoustic properties of the cladding.