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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;Lee, Sang-Hyun;Hwang, Jae-Seung;Baek, Gil-Ok;Park, Hong-Gun
문대호;이상현;황재승;백길옥;박홍근

  • Received : 2015.10.19
  • Accepted : 2015.11.17
  • Published : 2015.12.29

Abstract

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.

Keywords

finite element method;FEM;heavy weight impact sound;frequency response function

References

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Acknowledgement

Supported by : 국토교통부