Sound Absorption of Sound Supressing Lightweight Structured Panels

Abstract

Description of the effective soundproofing panel is presented. For this panel, the ratio of acoustic characteristics and surface density exceeds many modern sound insulation and sound absorbing materials and structures. This article is devoted to modeling the sound absorption coefficient of the soundproof panel. The article presents formulas for determining the coefficient of sound absorption. Construction of a sound suppressed lightweight structured panel (SSLSP) developed by the authors is shown. Comparison of the effectiveness of the SSLSP panel and modern sound-proof materials is shown.

Mathematical modeling of sound insulation for sound suppressing lightweight structured panels (SSLWSP)

“…The dissipation energy passes to the thermal energy of the environment irrevocably. It was shown in [6] that the value of this energy can be determined on the basis of the loss factor  , obtained by taking into account the process of damping with ambient air and sound energy absorption in the material itself…”

“…Figure 5 shows a simplified diagram of a SSLWSP panel with the separation of sheet material three basic layers. The scheme was borrowed from [6]. Each layer of sheet material is a thin plate, for which the basic relationships between the energy fluxes of sound were determined above.…”