Modelling the radiation efficiency of orthotropic cross-laminated timber plates with simply-supported boundaries

Santoni, Andrea; Schoenwald, Stefan; Fausti, Patrizio; Tröbs, Hans-Martin

doi:10.1016/j.apacoust.2018.08.022

Cited by 19 publications

(16 citation statements)

References 31 publications

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“…30,31 In some cases, the spatial in-plane variation of the bending stiffness of orthotropic plates can be approximated using an elliptic function. This approach was used, for example, by Atalla 32 to compute sound transmission loss of orthotropic sandwich panels or by Santoni et al 33,34 to evaluate both the transmission loss and the radiation efficiency of cross-laminated timber (CLT) partitions. For a wall which is only slightly orthropic, use of the geometric mean of the bending stiffness is often acceptable.…”

Section: Single-leaf Homogeneous Partitionsmentioning

confidence: 99%

A review of the different approaches to predict the sound transmission loss of building partitions

et al. 2020

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The computation of sound transmission through solid structures has been of great interest since the first half of the 20th century. Several prediction methods can be found in the large body of literature, applicable to many kinds of structures, and derived using different approaches. This article presents a review of the most significant approaches to compute sound transmission through a building partition; it aims to provide an extensive update and critical literature review of the different approaches which can be used to compute sound transmission through a building partition. Different approaches, suitable for different kinds of building structures, based on analytical and semi-analytical solutions, wave-propagation, numerical or statistical energy analysis methods are described, highlighting advantages and drawbacks.

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Section: Single-leaf Homogeneous Partitionsmentioning

confidence: 99%

A review of the different approaches to predict the sound transmission loss of building partitions

et al. 2020

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“…These studies revealed, on the one hand, the complexity in defining acoustic calculation models and, on the other, the problems connected with the effective achievement of the expected sound insulation. Several parallel lines of research have therefore developed: Laboratory and on-site characterization of the properties of sound insulation and impact noise level of CLT elements with the creation of the first repertoires for the use of acoustic performance data in calculation models by Hoeller et al [55], Homb et al [56], Schoenewadl et al [57], and Zeitler et al [58]; the study of the vibro-acoustic behavior of CLT panels and their radiation efficiency by Santoni et al [59,60] with the effects on the modelling of the acoustic behavior of the panels developed by Morandi et al [61] and validated through comparisons between laboratory measurements and models; the study on the influence of the joints between CLT panels on the on-site acoustic performance by Guigou-Carter et al [62] and Morandi et al [63], which led to the inclusion of specific relationships for CLT in the standardized prediction methods. Di Bella et al [64,65] proposed parametric reference curves of acoustic insulation and the impact noise level for bare CLT structures in order to use the data available from laboratory measurements of the performance improvement provided by acoustic linings, in the absence of laboratory-measured data on complete structures.…”

Section: Overview On Basic Research On Clt Systemsmentioning

confidence: 99%

“…This research is currently focusing on a deepening of the knowledge on the CLT panels vibro-acoustic behavior [59][60][61] and on the implications that building design and the available fixing techniques can have on the correct modelling of the joints between the panels [63].…”

mentioning

confidence: 99%

Acoustic Characteristics of Cross-Laminated Timber Systems

Bella

Mitrović

2020

Sustainability

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The growing diffusion of cross-laminated timber structures (CLT) has been accompanied by extensive research on the peculiar characteristics of this construction system, mainly concerning its economic and environmental benefits, lifecycle, structural design, resistance to seismic actions, fire protection, and energy efficiency. Nevertheless, some aspects have not yet been fully analysed. These include both the knowledge of noise protection that CLT systems are able to offer in relation to the possible applications and combinations of building elements, and the definition of calculation methods necessary to support the acoustic design. This review focuses on the main acoustic features of CLT systems and investigate on the results of the most relevant research aimed to provide key information on the application of acoustic modelling in CLT buildings. The vibro-acoustic behaviour of the basic component of this system and their interaction through the joints has been addressed, as well as the possible ways to manage acoustic information for calculation accuracy improvement by calibration with data from on-site measurements during the construction phase. This study further suggests the opportunity to improve measurement standards with specific reference curves for the bare CLT building elements, in order to compare different acoustic linings and assemblies on the same base. In addition, this study allows to identify some topics in the literature that are not yet fully clarified, providing some insights on possible future developments in research and for the optimization of these products.

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“…with the Poisson's ratio ν = 0.3 [47], assuming that the core behaves like a homogeneous material before and after the sandwiching process.…”

Section: Experimental Determination Of Elastic Modulus Of the Phenolimentioning

confidence: 99%

Vibro-Acoustic Characterization of a Composite Structure Featuring an Innovative Phenolic Foam Core

2019

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Composite panels are being increasingly used in many applications because they can combine several interesting properties, such as high load-bearing capacity, low weight, and excellent thermal insulation. Different core materials can be used for composite sandwich panels, like polystyrene, mineral wool, polyurethane, glass wool, or rigid phenolic foam, which is considered the rigid plastic foam with the best fire-proof properties. During the research and development phase, the use of simulation tools is often required for the improvement of the mechanical behavior of the material. The aim of the paper is to characterize some vibro-acoustic parameters of a sandwich material with phenolic open-cell foam core. The sound transmission loss of the structure is calculated based on its flexural behavior, represented through a frequency-dependent “apparent” bending stiffness which is estimated by natural frequency vibration tests on beam specimens. The comparison between sound transmission loss predictions and measurements in sound transmission suites according to ISO 10140-2 is presented and discussed. Finally, the early-stage prediction potentiality of the mathematical model is investigated when only nominal information is available on the constituent layers, showing that particular attention should be paid to the modifications introduced by the manufacturing process.

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Modelling the radiation efficiency of orthotropic cross-laminated timber plates with simply-supported boundaries

Cited by 19 publications

References 31 publications

A review of the different approaches to predict the sound transmission loss of building partitions

A review of the different approaches to predict the sound transmission loss of building partitions

Acoustic Characteristics of Cross-Laminated Timber Systems

Vibro-Acoustic Characterization of a Composite Structure Featuring an Innovative Phenolic Foam Core

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