The Study on Characteristic of Floor Impact Noise using the Structural Vibration on Floor Slab : Effective Plate

Kim, Tae Min; Bae, Jin-Young; Yang, Hongseok

doi:10.5050/ksnve.2020.30.3.276

Cited by 5 publications

(2 citation statements)

References 9 publications

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“…In contrast, the correlation coefficient for heavy-weight floor impact sound varied between 0.46 and 0.9, which indicated that the use of the acceleration level to evaluate the noise between floors was associated with a limited accuracy. Other researchers used the relationship between the vibration and acoustic modes to increase the correlation between the vibration and heavy-weight floor impact sound [30]. The correlation between the vibration and sound pressure levels in a free field was extremely high (0.91), but that in a structure-acoustic combined space varied owing to the uncertainties in the modal response contribution levels and modal characteristics of the sound environment containing the structure.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Vibration-Mode-Induced Noise of Structure–Acoustic Coupled Systems

et al. 2022

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The exposure of a structure to an acoustic domain induces a sound field owing to the interaction of the air-fluid and structure at the acoustic–structure boundaries. It is difficult to predict sound pressure level through vibration mode, due to the acoustic mode of the coupling effect between vibration and sound in addition to the acoustic mode induced by vibration mode generated by external force. In this study, the acoustic mode induced by structural vibration modes were predicted through a numerical analysis. A finite element model of a reverberation chamber with a shell at one side was constructed, and modal parameters of the vibration and acoustic modes were evaluated through an eigenvalue analysis. In addition, the sound pressure generated by impact loading of the shell were predicted by vibration mode through a time-domain structure–acoustic coupling analysis. The vibration and acoustic modal responses were identified from the measured responses, and the acoustic mode associated with a specific vibration mode was examined. The results showed that the acoustic mode from the coupling effect was verified, and sound pressure prediction from vibration mode was possible if considered as the coupling effect. The proposed approach can be applied to predict the heavy-weight floor impact sound from the vibration of slabs in apartments.

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Section: Introductionmentioning

confidence: 99%

Prediction of Vibration-Mode-Induced Noise of Structure–Acoustic Coupled Systems

et al. 2022

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“…As these noise types are a major reason for neighborhood conflicts, the South Korean government recommended a thicknesses of at least 210 mm for concrete slabs and imposed legal requirements in terms of impact sound insulation since 2005. Subsequently, various impact sound reduction techniques were considered in newly built apartments [3][4][5]. However, the apartments that were already built before enacting the minimum performance standards (hereinafter referred to as existing housing) account for 80% of the total apartments and have poor impact sound insulation performance.…”

Section: Introductionmentioning

confidence: 99%

Effects of Wall-to-Wall Supported Ceilings on Impact Sound Insulation for Use in Residential Buildings

2021

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In Korean residential buildings, floor impact sounds were reduced over the past few decades mainly through a floating floor system. However, ceiling constructions for impact sound reduction have not been applied actively because of a lack of useful information. This study focuses on the effects of wall-to-wall supported ceilings (WSC), which are designed with construction discontinuities between concrete slabs and ceilings, and the damping caused by porous absorbers for impact sound insulation. To examine the impact sound insulation according to ceiling conditions, measurements were performed in 25 floor–ceiling assemblies. The results indicate that ceiling treatment is mostly useful in reducing the floor impact sound. The floor impact sound owing to the WSC decreased by 2–7 dB and 2–8 dB in terms of the single number quantity for the tapping machine and rubber balls, respectively, compared with representative existing housing constructions wherein ceilings were attached on wooden sticks. Furthermore, the reduction effect of the WSC appeared to be more profound when it was applied to the floor–ceiling assembly with poor impact sound insulation. Thus, the WSC can be used to enhance the impact of sound insulation of existing housings without major repairs of floor structural layers.

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A Study on the Floor Impact Noise of Small Size Multi Residential House with Light-weight Dry Walls

Kim¹,

Bae²

2021

KSNVE

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The Study on Characteristic of Floor Impact Noise using the Structural Vibration on Floor Slab : Effective Plate

Cited by 5 publications

References 9 publications

Prediction of Vibration-Mode-Induced Noise of Structure–Acoustic Coupled Systems

Prediction of Vibration-Mode-Induced Noise of Structure–Acoustic Coupled Systems

Effects of Wall-to-Wall Supported Ceilings on Impact Sound Insulation for Use in Residential Buildings

A Study on the Floor Impact Noise of Small Size Multi Residential House with Light-weight Dry Walls

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