- Volume 28 Issue 6
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Prediction of Heavy-Weight Floor Impact Sound in Multi-unit House using Finite Element Analysis
유한요소해석을 이용한 공동주택의 중량충격음 예측
- Mun, Dae-Ho (Department of Architectural Engineering, Dankook University) ;
- Lee, Sang-Hyun (Department of Architectural Engineering, Dankook University) ;
- Hwang, Jae-Seung (Department of Architectural Engineering, Chonnam National Univ.) ;
- Baek, Gil-Ok (Department of Architecture & Architectural Engineering, Seoul National Univ.) ;
- Park, Hong-Gun (Department of Architecture & Architectural Engineering, Seoul National Univ.)
- Received : 2015.10.19
- Accepted : 2015.11.17
- Published : 2015.12.29
In this study floor impact noise and structure acceleration response of bare concrete slabs were predicted by using Finite Element Analysis(FEA). Prediction results were compared with experimental results to prove the accuracy of numerical model. Acoustic absorption were addressed by using panel impedance coefficients with frequency characteristics and structural modal damping of numerical model were applied by modal testing results and analysis of prediction and test results. By using frequency response function, the floor acceleration and acoustic pressure responses for various impact sources were calculated at the same time. In the FEA, the natural frequencies and the shapes of vibration and acoustic modes can be estimated through the eigen-value analysis, and it can be visually seen the vibration and sound pressure field and the contribution of major modes.
Supported by : 국토교통부
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- Mun, D.H., Park, H.G., Hwang, J.S. (2014) Prediction of Concrete Slab Acceleration and Floor Impact Noise Using Frequency Response Function, Trans. Korean Soc. Noise & Vib. Eng., 24(6), pp.483-492. https://doi.org/10.5050/KSNVE.2014.24.6.483
- Mun, D.H., Park, H.G., Hwang, J.S., Hong, G.H, Im, J.H (2012) Numerical Analysis of Heavy-weight Impact Noise for Apartment Units Considering Acoustic Mode, Trans. Korean Soc. Noise & Vib. Eng., 22(7), pp.676-684. https://doi.org/10.5050/KSNVE.2012.22.7.676