• Title/Summary/Keyword: Heavy-weight floor Impact Noise

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Application of Finite Element Method to Floor Impact Vibration Analysis in the Apartment Buildings (공동주택의 바닥 충격 진동 해석을 위한 유한요소법 응용)

  • Seo, Sang-Ho;Jeon, Jin-Yong
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2005.05a
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    • pp.387-390
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    • 2005

  • Finite element method was applied to the vibration analysis of concrete slab system in apartment building. To save the time and cost the 2 dimensional finite element model was proposed. At first, experimental results show that sound peak components to influence the overall level and the rating of floor impact sound insulation were coincident with natural frequencies of the reinforced concrete slab. Second, there is linear relationship between the impact sound pressure level and vibration acceleration level. Third, 2 dimensional finite element model was enough to analyze the vibration analysis of floor structure system.

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Numerical Study on the Control of Heavy-weight Floor Impact Noise for PC Slab Coupled with Viscoelastic Material (점탄성재료가 결합된 PC 슬래브의 중량충격음 저감에 관한 수치해석 연구)

  • Hwang, Jae-Seung;Song, Jin-Kyu;Hong, Geon-Ho;Park, Hong-Gun
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.18 no.5
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    • pp.533-540
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    • 2008

  • In this study, a new slab system where a part of precast slab is connected each other by viscoelastic material is proposed and numerical analysis is performed to evaluate the effect of the connection between the material and PC slab on the vibration and noise control. Substructuring is introduced to develop the equation of motion for the slab system. In addition, the optimal properties of viscoelastic material are investigated. For the performance evaluation of the new slab system, the sound power and acceleration responses of the slab are compared with those of two way slab and one way slab, respectively. Numerical analysis results show that the sound power of the new slab system can be reduced by viscoelastic material significantly.

  • https://doi.org/10.5050/KSNVN.2008.18.5.533 인용 PDF KSCI