Analysis of Direct and Flanking Sound Transmission Between Rooms with Curtain Wall Facades

Martello, Nicolò Zuccherini; Secchi, Simone; Fausti, Patrizio; Cellai, Gianfranco; Santoni, Andrea

doi:10.1016/j.egypro.2015.11.133

Cited by 5 publications

(2 citation statements)

References 4 publications

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“…They revealed that there is good agreement between the two methods and they showed that the vibration velocity method is more efficient than the intensity method in case of evaluating the contribution of flanking paths Andrade et al 4 2004 Made a comparison between the traditional method described by ISO 140-4 and the vibration velocity method for measuring the apparent SRI. Their results indicated that there is good agreement between the values obtained and they concluded that the vibration velocity method is more efficient for calculating the contribution of the flanking transmission from lateral walls Zuccherini Martello et al 20…”

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confidence: 80%

Using sound pressure level and vibration velocity method to determine sound reduction index of lightweight partitions

2019

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Nowadays, lightweight building structures are widely used by the construction industry as a more natural and cost-effective method. The purpose of this study is to compare between sound pressure level and vibration velocity method for sound reduction index determination for single-and double-leaf gypsum board partitions. The sound pressure level method was carried out according to the requirements of ISO 140-3:1997, and the vibration velocity method (V) was carried out according to some criteria of ISO 10848-1:2006. Regarding double-leaf partitions, measurements were carried out with the leaves separated by 5-and 10-cm air gaps. The effect of cavity filling with absorbing materials was studied experimentally. The space between the leaves was filled with Rockwool and polyurethane to illustrate the effect of cavity absorption on the sound reduction index behavior. It was found that there is good agreement between the two methods. Also, cavity filling with a 10-cm absorbing material such as Rockwool increases the sound reduction index at the critical frequency by 7 dB using sound pressure method and 4 dB using vibration velocity method.

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confidence: 80%

Using sound pressure level and vibration velocity method to determine sound reduction index of lightweight partitions

2019

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“…The comparison between the experimental and numerical simulation results showed that the peak sound pressure level (SPL) exhibited very similar trends. Martello et al [38] analyzed the direct and flanking sound transmission between rooms with curtain wall facades.…”

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confidence: 99%

Numerical Study on Wind‐Induced Noise of High‐Rise Building Curtain Wall with Outside Shading Devices

2018

Shock and Vibration

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Perforation metal plates with dense holes are often used as external curtain walls of high-rise buildings. When air flow passes through these holes at a high speed, complex vortex is generated and causes a significant issue of wind-induced noise. In this study, both Reynolds-averaged Navier–Stokes (RANS) simulations and large-eddy simulations (LES) were conducted to study flow around high-rise buildings with an external sunshade curtain wall. First, wind speed distributions at the height of a typical level under 16 wind directions were acquired. Then, the maximum wind speed ratio and its corresponding azimuth were identified. Second, the sound pressure levels in the vicinity of the shading devices with two types of perforation plate schemes were calculated to evaluate the acoustic characteristics by using the FW-H equation to simulate sound generation and propagation. The results indicate that the maximum wind speed around the buildings exists at the building corners, and the maximum wind speed ratio is 2.8 observed at 0-degree wind direction. Under two different wind conditions, the aeroacoustic performance of perforation plate is enhanced with reducing end plate size and increasing aperture size. The overall sound pressure level (OSPL) and A-weighted sound pressure level (ASPL) around the shading devices are 80 dB and 68 dB(A), respectively, for the improved perforation plate scheme under the 1-year return period maximum speed, which are changed to 58dB and 45dB(A) under the annual average speed. Therefore, it is believed that perforation plates with small end plate size and large aperture size are desirable for the noise prevention design of shading devices.

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Influence of EPS, mineral wool and plaster layers on sound and thermal insulation of a wall: a case study

Miškinis

Dikavičius

Buska³

et al. 2018

Applied Acoustics

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Analysis of Direct and Flanking Sound Transmission Between Rooms with Curtain Wall Facades

Cited by 5 publications

References 4 publications

Using sound pressure level and vibration velocity method to determine sound reduction index of lightweight partitions

Using sound pressure level and vibration velocity method to determine sound reduction index of lightweight partitions

Numerical Study on Wind‐Induced Noise of High‐Rise Building Curtain Wall with Outside Shading Devices

Influence of EPS, mineral wool and plaster layers on sound and thermal insulation of a wall: a case study

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