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

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

doi:10.1016/j.apacoust.2022.108865

Cited by 1 publication

(2 citation statements)

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“…The drive point impedance can be generated from the force and used to calculate the input power. The transmitted radiated sound power can then be calculated by determining the pressure along the pressure at the boundary of a free-field air hemisphere, as was explained by Broyles et al 51 This strategy can help designers consider the impact sound insulation performance of different shaped structural elements in the conceptual design stage. A related subject to sound insulation is the coincidence frequency of a structure.…”

Section: Implications In Building Acousticsmentioning

confidence: 99%

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Evaluation of the dynamic response for scaled models of shaped concrete floor slabs

2023

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The dynamic response of building structures is an essential design consideration in building acoustics. However, building design is increasingly driven by sustainability goals. Floors can be optimized to reduce material consumption and corresponding carbon emissions, yet geometric changes may cause sound insulation and vibration problems. Although the dynamic performance of traditional floors is well established, the performance of non-traditional shapes is less understood. Before trusting the results of building simulations encompassing optimized floors, the dynamic results should first be validated experimentally. This paper details a numerical finite element analysis method to ascertain the dynamic response of four shaped concrete slabs, with experimental modal analysis used to validate the numerical results. The material properties in the numerical model are updated to match the experimental results. The findings support a computational framework for determining the dynamic response of shaped structures that can then be implemented in future large-scale building models.

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Section: Implications In Building Acousticsmentioning

confidence: 99%

“…In a secondary study, alternative sound insulation metrics more appropriate for optimization were proposed. 51 Later studies that optimize structural elements in buildings, like walls, should similarly study the coincidence frequency.…”

Section: Implications In Building Acousticsmentioning

confidence: 99%