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Prediction of the Sound Insulation of Layered and Periodic Wall and Floor Systems while Accounting for Modal Behaviour KU Leuven
Lightweight systems such as cross-laminated timber elements, sandwich panels, gypsum board walls,... are emerging in building construction. Because of their relatively low weight and complex vibro-acoustic behaviour, achieving a sufficient level of sound insulation with such systems is however challenging. The aim of this research is to develop a sound transmission loss prediction method, which exhibits similar accuracy as a comparable numerical ...
Accounting for modal behaviour in the prediction of sound transmission through simply supported building elements using periodic structures theory KU Leuven
In order to optimize the sound insulation of building elements, efficient and sufficiently accurate prediction tools over a broad frequency range are required to avoid extensive experimental prototype testing in an acoustic laboratory. When simulating the transmission suite, a hybrid framework can be used to divide the room-wall-room system into statistical and deterministic subsystems. While the rooms are assumed to have diffuse sound fields ...
Robust sound transmission modelling of finite-sized built-up walls and floors KU Leuven
© Proceedings of ISMA 2018 - International Conference on Noise and Vibration Engineering and USD 2018 - International Conference on Uncertainty in Structural Dynamics. All rights reserved. An accurate design tool over a broad frequency range which replaces laboratory testing of multilayered structures, is the objective in this work as such systems are regularly applied in buildings. The main used methodology is the semi-analytical transfer ...
Fast mean and variance computation of the diffuse sound transmission through finite-sized thick and layered wall and floor systems KU Leuven
© 2018 Elsevier Ltd A method is developed for computing the mean and variance of the diffuse field sound transmission loss of finite-sized layered wall and floor systems that consist of solid, fluid and/or poroelastic layers. This is achieved by coupling a transfer matrix model of the wall or floor to statistical energy analysis subsystem models of the adjacent room volumes. The modal behavior of the wall is approximately accounted for by ...