Modulating the Acoustic Vibration Performance of Wood by Introducing a Periodic Annular Groove Structure

The acoustic vibration performance of wood affects the quality of many musical instruments, and the variability of wood causes obvious differences between individual timber samples. To mitigate the variations among the individual timber samples intended for musical instruments, in this study, we com...

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Bibliographic Details
Published inForests Vol. 14; no. 12; p. 2360
Main Authors Zhang, Liang, He, Lan, Liang, Yuwei, Zhang, Juncheng, Zhang, Haiyang, Zhou, Jing, Cui, Haotian, Li, Mingrui, Miao, Yuanyuan, Liu, Zhenbo
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.12.2023
Subjects
Acoustic impedance
Acoustic properties
acoustic vibration performance
Acoustics
Design
Eardrum
Equivalence
Finite element method
Grooves
Investigations
Mathematical models
Musical instruments
Parameters
periodic structure
Resonant frequencies
Simulation
Simulation methods
Sound waves
Storage modulus
Timber
Vibration
Wood
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Summary:The acoustic vibration performance of wood affects the quality of many musical instruments, and the variability of wood causes obvious differences between individual timber samples. To mitigate the variations among the individual timber samples intended for musical instruments, in this study, we combined finite element simulation with experimental testing to investigate the effect of the periodic annular groove structure on the comprehensive acoustic vibration characteristics of wood. The results revealed that there are discernible correlations between the structural parameters of the periodic annular groove and the key acoustic parameters of wood, including the resonant frequency, equivalent dynamic modulus of elasticity, equivalent specific dynamic modulus of elasticity, equivalent acoustic radiation quality constant, and equivalent acoustic impedance. These relationships can be used to fine-tune the overall acoustic vibration performance of wood and harmonize the acoustic vibration characteristics among different timber specimens. The effects of the periodic annular groove structure on the five acoustic vibration parameters obtained through finite element simulations exhibited minimal differences to the corresponding results from experimental tests. Furthermore, there was a remarkably strong correlation between the outcomes of the finite element simulations and the experimental test results, with the coefficient of determination exceeding 0.99.
ISSN:1999-4907
1999-4907
DOI:10.3390/f14122360