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Vibration reduction in cross-laminated timber panels by using individual concrete lamellae

Ung, K. A. LU orcid ; Bohman, A. LU ; Andersson, L. LU ; Persson, P. LU ; Johansson, S. and Andersen, L. V. (2025) p.72-77
Abstract

The use and significance of timber structures are on the rise, especially thanks to crosslaminated timber (CLT). This engineered wood product is manufactured by stacking multiple layers of wood lamellae, each oriented perpendicularly to the one below it, and then bonding them with adhesives to form a floor or wall panel. Timber, as a building material, presents potential environmental benefits over traditional materials like concrete. However, timber constructions often exhibit greater sensitivity to dynamic loads, which underscores the importance of enhancing the design of these structural elements to mitigate vibrations and reduce low-frequency structure-bone sound. This study explores the vibrational performance of panels where... (More)

The use and significance of timber structures are on the rise, especially thanks to crosslaminated timber (CLT). This engineered wood product is manufactured by stacking multiple layers of wood lamellae, each oriented perpendicularly to the one below it, and then bonding them with adhesives to form a floor or wall panel. Timber, as a building material, presents potential environmental benefits over traditional materials like concrete. However, timber constructions often exhibit greater sensitivity to dynamic loads, which underscores the importance of enhancing the design of these structural elements to mitigate vibrations and reduce low-frequency structure-bone sound. This study explores the vibrational performance of panels where lamellae of conventional spruce are partially replaced by concrete. The panel vibrations were calculated by using the finite element method. The material parameters for spruce were obtained by calibrating the finite element model to measurement data from experimental modal analysis. It was seen that appreciable reduction in the level of vibration can be achieved by replacing individual spruce lamellae with concrete. By replacing only a few percent of the lamellae, more than a halving of the vibration level of the frequency response function could be seen for a free-free panel, considering all resonance frequencies below 500 Hz.

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Please use this url to cite or link to this publication:
author
; ; ; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Engineering Materials, Structures, Systems and Methods for a More Sustainable Future
pages
6 pages
publisher
CRC Press/Balkema
external identifiers
  • scopus:105022955548
ISBN
9781032780102
9781040592625
DOI
10.1201/9781003677895-12
language
English
LU publication?
yes
id
3c05fedf-5bf6-4166-8a1a-3513f4a7fed4
date added to LUP
2026-02-04 12:55:21
date last changed
2026-02-05 03:55:24
@inbook{3c05fedf-5bf6-4166-8a1a-3513f4a7fed4,
  abstract     = {{<p>The use and significance of timber structures are on the rise, especially thanks to crosslaminated timber (CLT). This engineered wood product is manufactured by stacking multiple layers of wood lamellae, each oriented perpendicularly to the one below it, and then bonding them with adhesives to form a floor or wall panel. Timber, as a building material, presents potential environmental benefits over traditional materials like concrete. However, timber constructions often exhibit greater sensitivity to dynamic loads, which underscores the importance of enhancing the design of these structural elements to mitigate vibrations and reduce low-frequency structure-bone sound. This study explores the vibrational performance of panels where lamellae of conventional spruce are partially replaced by concrete. The panel vibrations were calculated by using the finite element method. The material parameters for spruce were obtained by calibrating the finite element model to measurement data from experimental modal analysis. It was seen that appreciable reduction in the level of vibration can be achieved by replacing individual spruce lamellae with concrete. By replacing only a few percent of the lamellae, more than a halving of the vibration level of the frequency response function could be seen for a free-free panel, considering all resonance frequencies below 500 Hz.</p>}},
  author       = {{Ung, K. A. and Bohman, A. and Andersson, L. and Persson, P. and Johansson, S. and Andersen, L. V.}},
  booktitle    = {{Engineering Materials, Structures, Systems and Methods for a More Sustainable Future}},
  isbn         = {{9781032780102}},
  language     = {{eng}},
  pages        = {{72--77}},
  publisher    = {{CRC Press/Balkema}},
  title        = {{Vibration reduction in cross-laminated timber panels by using individual concrete lamellae}},
  url          = {{http://dx.doi.org/10.1201/9781003677895-12}},
  doi          = {{10.1201/9781003677895-12}},
  year         = {{2025}},
}