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Project

Hybrid vibro-acoustic analysis of buildings and building components involving model updating.

In present-days society, noise and vibration discomfort problems in buildings receive continuous attention. Within civil engineering, there is an increasing overlap between the frequency range of interest in structural mechanics (up to 250 Hz), and building acoustics (down to 40 Hz). The aim of this project is to develop and validate a unifying methodology for vibro-acoustic analysis of building components and complete buildings in a wide frequency range. Hereto, a hybrid approach, combining displacement- and energy-based modeling techniques, will be employed and extended so as to account for parametric uncertainty and to incorporate experimental data. The developed methodology aims at identifying potential vibro-acoustic problems in buildings at the design stage, and predicting the effect of proposed solutions in a reliable and accurate way. Two applications will be studied in detail: the sound insulation prediction of lightweight floor systems and the analysis and remedy of noise and vibration problems in buildings due to operating machinery, traffic, or acoustic excitation.
Date:1 Oct 2010 →  30 Sep 2016
Keywords:Inverse modelling², Buildings, Acoustics, Structural mechanics, Vibrations, Uncertainty quantification
Disciplines:Mechanics, Building engineering