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Title: Comparative study of different modeling parameters for predicting vibrations on timber-frame floors
Authors: Nunes, M.
Patrício, J.
Keywords: Timber-frame floors;Vibrational response;Finite element analyses
Issue Date: 14-Jun-2016
Publisher: LNEC
Abstract: Existing buildings reforms should include quality parameters and in timber-frame building systems the vibration transmission should be well studied to comply with the acoustic requirements. The input parameters for the prediction of vibrational response of floors can influence the results in modelled building systems. In building structures, the analysis of radiation due to beam vibrations may be represented from the wave propagation relationships as a one-dimensional system, a two-dimensional system or a three-dimensional solid. Recent research indicates that for point connection, a beam is usually modelled as a one-directional element. However, for lightweight structures such modelling type does not show good correlation with experimental results. This study focuses on the differences that can be obtain in the vibrational response due to an impact source exerted on typical timber-frame floors. It also presents some examples for some modelling options for plate/beam systems with and without ceiling, considering different connection types.
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