Improved low-frequency performance of cross-laminated timber floor panels by informed material selection

Research output: Contribution to journalArticle

Abstract

The paper demonstrates improved structural low-frequency vibroacoustic performance of cross-laminated timber (CLT) floor panels by informed selection of the wood material. The use of wood species and strength classes that are not traditionally assigned to CLT panels was investigated in order to study their influence on dynamic characteristics and vibroacoustic response metrics. The potential of each of the orthotropic material properties to alternate the vibration response was examined to determine the governing parameters of the low-frequency vibroacoustic performance. The effects on transfer mobility response functions, and eigenfrequencies and mode shapes were used for a rigorous performance study of the panels. It was found that using laminations with stiffness properties typical for hardwoods ash, beech, and birch can significantly improve the performance of a CLT floor panel, and they outperform laminations of typical softwood strength classes.

Details

Authors
Organisations
External organisations
  • Aarhus University
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Building Technologies

Keywords

  • Cross-laminated timber (CLT), Finite element method, Floor panels, Floor vibrations, Strength classes, Vibroacoustic response, Wood species
Original languageEnglish
Article number108017
JournalApplied Acoustics
Volume179
Publication statusPublished - 2021 Aug
Publication categoryResearch
Peer-reviewedYes