振动
有限元法
声学
沟槽(工程)
声阻抗
材料科学
弹性(物理)
机械阻抗
结构工程
电阻抗
杨氏模量
模数
复合材料
工程类
物理
超声波传感器
电气工程
冶金
作者
Liang Zhang,Lan He,Yuwei Liang,Juncheng Zhang,Haiyang Zhang,Jing Zhou,Haotian Cui,Mingrui Li,Yuanyuan Miao,Zhenbo Liu
出处
期刊:Forests
[MDPI AG]
日期:2023-11-30
卷期号:14 (12): 2360-2360
被引量:1
摘要
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.
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