Analysis of the transmission loss of double-leaf panels with an equivalent spring-mass model for studs
Journal
Journal of Mechanics
Journal Volume
37
Pages
126-133
Date Issued
2021
Author(s)
Li Y.-W
Abstract
The purpose of this study was to investigate the sound insulation of double-leaf panels. In practice, double-leaf panels require a stud between two surface panels. To simplify the analysis, a stud was modeled as a spring and mass. Studies have indicated that the stiffness of the equivalent spring is not a constant and varies with the frequency of sound. Therefore, a frequency-dependent stiffness curve was used to model the effect of the stud to analyze the sound insulation of a double-leaf panel. First, the sound transmission loss of a panel reported by Halliwell was used to fit the results of this study to determine the stiffness of the distribution curve. With this stiffness distribution of steel stud, some previous proposed panels are also analyzed and are compared to the experimental results in the literature. The agreement is good. Finally, the effects of parameters, such as the thickness and density of the panel, thickness of the stud and spacing of the stud, on the sound insulation of double-leaf panels were analyzed. ? 2020 The Author(s) 2020.
Subjects
Double-leaf panel
Sound insulation
Stiffness
Stud
Architectural acoustics
Springs (components)
Studs (structural members)
Transmissions
Wave transmission
Distribution curves
Equivalent springs
Frequency dependent
Sound transmission loss
Steel studs
Stiffness distributions
Transmission loss
Type
journal article