Modified acoustic transmission metrics for early-stage design exploration using a computational case study of heavyweight floors

Jonathan M. Broyles, Micah R. Shepherd, Nathan C. Brown

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Improved computational modeling capabilities enable building designers to evaluate the acoustic performance of a design prior to construction. Using simulation to evaluate a range of potential solutions can help identify the best performing options before expending resources on building construction or before physical testing and fabrication of components. This is particularly important as novel designs aimed at improving sustainability goals are becoming more prevalent. While metrics exist to quantify sound insulation of wall and floor structures, commonly used metrics have limitations that in many circumstances can lead to a component design with undesirable sound insulation performance. This paper discusses the history of American rating methods for quantifying air- and structure-borne sound transmission of floors and walls, provides a review of their limitations, and summarizes how these limitations may negatively affect design exploration. It then proposes modified metrics for quantifying sound insulation, which may be more appropriate for rapid evaluation and design exploration. The new metrics are then compared to the existing American ratings for a numerical case study of shape-optimized concrete floors, revealing instances in which the new metrics may more accurately lead to desired sound insulation performance.

Original languageEnglish (US)
Article number108865
JournalApplied Acoustics
Volume196
DOIs
StatePublished - Jul 2022

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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