Dynamic and Acoustic Properties of a Joisted Floor

Edoardo Alessio Piana, Candida Petrogalli, Luigi Solazzi

Abstract

Lightweight structures find more and more applications in both vehicle and ship industries. To meet a growing demand, a variety of different types of joisted panels have been developed during the last few decades. One of the problems to deal with is the assessment of the acoustic performances of such panels once they are already mounted in their final place. In this case, it can be of importance to find a way to characterise their dynamic and acoustic properties, such as bending stiffness, internal losses and sound reduction index through non-destructive testing. A method for a quick determination of the bending stiffness of a lightweight joisted floor is presented. On the basis of the apparent bending stiffness and of the losses, it is possible to predict the sound reduction index of the panel in a fairly simple way. The results obtained from the mobility tests have been compared to the measurements carried out according to the ISO standard procedure.

References

  1. Backström, D. & Nilsson, A.C., 2007. Modelling the vibration of sandwich beams using frequencydependent parameters. Journal of Sound and Vibration, 300(3-5), pp.589-611.
  2. Cremer, L., 1942. Theorie der Schalldämmung dünner Wände bei schrägem Einfall. Akustische Zeitschrift, 7(3), pp.81-104.
  3. Fahy, F. & Mohammed, A., 1992. A study of uncertainty in applications of sea to coupled beam and plate systems - Part I: Computational experiments. Journal of Sound and Vibration, 158(1), pp.45-67.
  4. Nightingale, T.R.T., Halliwell, R.E. & Pernica, G., 2004. Estimating in-situ material properties of a wood joist floor: Part 1 - Measurements of the real part of bending wavenumber. Building Acoustics, 11(3), pp.175-96.
  5. Nilsson, A. & Liu, B., 2016. Vibro-Acoustics, Vol. 1 and 2. Second edition ed. Berlin Heidelberg: Springer-Verlag.
  6. Nilsson, E. & Nilsson, A.C., 2002. Prediction and measurement of some dynamic properties of sandwich structures with honeycomb and foam cores. Journal of Sound and Vibration, 251(3), pp.409-30.
  7. Piana, E.A., 2016. A method for determining the sound reduction index of precast panels based on point mobility measurements. Applied Acoustics, 110, pp.72- 80.
  8. Roelens, I., Nuytten, F., Bosmans, I. & Vermeir, G., 1997. In situ measurement of the stiffness properties of building components. Applied Acoustics, 52(3-4), pp.289-309.
Download


Paper Citation


in Harvard Style

Piana E., Petrogalli C. and Solazzi L. (2016). Dynamic and Acoustic Properties of a Joisted Floor . In Proceedings of the 6th International Conference on Simulation and Modeling Methodologies, Technologies and Applications - Volume 1: SIMULTECH, ISBN 978-989-758-199-1, pages 277-282. DOI: 10.5220/0005994202770282


in Bibtex Style

@conference{simultech16,
author={Edoardo Alessio Piana and Candida Petrogalli and Luigi Solazzi},
title={Dynamic and Acoustic Properties of a Joisted Floor},
booktitle={Proceedings of the 6th International Conference on Simulation and Modeling Methodologies, Technologies and Applications - Volume 1: SIMULTECH,},
year={2016},
pages={277-282},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005994202770282},
isbn={978-989-758-199-1},
}


in EndNote Style

TY - CONF
JO - Proceedings of the 6th International Conference on Simulation and Modeling Methodologies, Technologies and Applications - Volume 1: SIMULTECH,
TI - Dynamic and Acoustic Properties of a Joisted Floor
SN - 978-989-758-199-1
AU - Piana E.
AU - Petrogalli C.
AU - Solazzi L.
PY - 2016
SP - 277
EP - 282
DO - 10.5220/0005994202770282