Perforated Steel Stud to Improve the Acoustic Insulation of Drywall Partitions

Abstract

Steel studs are an inevitable part of drywall construction as they are lightweight and offer the required structural stability. However, the studs act as sound bridges between the plasterboards, reducing the overall sound insulation of the wall. Overcoming this often calls for wider cavity walls and complex stud decoupling fixtures that increase the installation cost while reducing the floor area. As an alternative approach, this research reveals the potential of perforated studs to improve the acoustic insulation of drywall partitions. The acoustic and structural performance is characterized using a validated finite element model that acted as a prediction tool in reducing the number of physical tests required. The results established that an acoustic numerical model featuring fluid-structure-interaction can predict the weighted sound reduction index of a stud wall assembly at an accuracy of ±1 dB. The model was used to analyze six perforated stud designs and found them to outperform the sound insulation of non-perforated drywall partitions by reducing the sound bridging. Overall, the best performing perforated stud design was found to offer improvements in acoustic insulation of up to 4 dB, while being structurally compliant.

Publication DOI: https://doi.org/10.3390/acoustics3040043
Divisions: College of Engineering & Physical Sciences > School of Engineering and Technology
College of Engineering & Physical Sciences
Additional Information: Copyright © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Uncontrolled Keywords: A-weighted pink noise,A-weighted urban noise,acoustic model,finite element analysis,partition walls,perforated studs,sound insulation,sound reduction index,Acoustics and Ultrasonics
Publication ISSN: 2624-599X
Last Modified: 16 May 2024 07:26
Date Deposited: 11 Jul 2023 09:00
Full Text Link:
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
https://www.mdp ... 624-599X/3/4/43 (Publisher URL)
PURE Output Type: Article
Published Date: 2021-12
Published Online Date: 2021-11-09
Accepted Date: 2021-11-07
Authors: Arjunan, Arun
Baroutaji, Ahmad (ORCID Profile 0000-0002-4717-1216)
Robinson, John

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