Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지
DOI QR코드

DOI QR Code

The Effect of Dynamic Property of Absorbing Sheet on the Amplification of Heavy Weight Floor Impact Noise

완충재의 동특성에 따른 중량충격음 증폭에 관한 해석적 연구

  • Received : 2010.04.15
  • Accepted : 2010.06.28
  • Published : 2010.07.20
Download PDF
⟨ Previous Next ⟩

Abstract

Previous experimental results performed by many researchers for a couple of decades in South Korea have shown that an absorbing sheet inserted in a conventional floating slab system for thermal insulation or vibration absorption may amplify the vibration of the slab system at specific frequency ranges depending on the material properties of the sheet. The amplified vibration, consequently, results in the heavy weight floor impact noise exceeding the sound level limit for an apartment house, 50 dB. In this study, the amplification mechanism is examined through numerical analysis and a new slab system is proposed to reduce the amplification and control the noise. The new slab system consists of studs connecting the base slab and upper concrete finishing yielding the dramatically increased stiffness of the slab. The numerical simulation is performed to investigate the effect of the slab system with studs on the vibration and noise control. The results show that the performance of the slab is sensitive to the number and location of studs, and the heavy weight floor impact noise can be reduced up to 6~7 dB compared to the conventional slab system at the optimal stud location.

Keywords

References

  1. Hong, G.-H., Park, H.-G., Hwang, J.-S., 2007, An Experimental Study on the Performance of Heavy_Weight Floor Impact Noise of Hollow Core Slab, Proceedings of AIK, Vol. 27, No.1 pp. 901-904.
  2. Seo, S. H., Song, H. S., Jeon,. J. Y., 2004. “Noise and Vibration Characteristics of Concrete Floor Structures Using Resilient Materials Driven by Standard Heavy Impact Source,” Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 14, No. 8, pp. 661-667. https://doi.org/10.5050/KSNVN.2004.14.8.661
  3. Kim, H.-G., Kim, M.-J., Lee, B.-K., 2005, “Study on Measuring the Dynamic Stiffness of Materials Used under Floating Floors in Dwellings,” Transactions of the AIK, Vol. 21., No. 1, pp. 229-234.
  4. Junger, M. C. Feit, D., 1994, Sound, Structures, and Their Interaction, 2nd Edition, MIT Press.
  5. Sung, C.-C. and Jan, J. T., 1997, “The Response of and Sound Power Radiated by a Clamped Rectangular Plate,” Journal of Sound and Vibration, Vol. 207, No. 3, pp. 301-317. https://doi.org/10.1006/jsvi.1997.1125
  6. Maia, N. M. M., Silva, J. M. M., 1997. Theoretical and Experimental Modal Analysis (Mechanical Engineering Research Studies. Engineering Control Series, 9), John Wiley & Sons.
  7. Moheimani, S. O. R., Halim, D., Fleming, A. J., 2003, Spatial Control of Vibration : Theory and Experiments, World Scientific.