Characteristics of resonance sound in a circular saw enclosure

IF 1.3 4区农林科学 Q2 MATERIALS SCIENCE, PAPER & WOOD

Bioresources Pub Date : 2023-10-27 DOI:10.15376/biores.18.4.8473-8483

Ken Takeyama, Hideyuki Yokochi, Satoru Nishio, Satoru Tsuchikaw

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引用次数: 0

Abstract

Several studies have been conducted to reduce the idling noise of circular saws because the sound level is extremely high and harms the environment. However, conventional noise suppression technology only controls the vibrations of the circular saw itself, whereas idling noise can be generated when the air inside the enclosure is resonant. In this study, the relationship between the rotational speeds of the circular saw blade and the frequencies of the resonance sound when the circular saw blade is running idle in an enclosure was examined. Additionally, the sound pressure modes and frequencies of the air in the enclosure were analyzed using the finite element method of acoustic analysis. The results showed that resonance sound was generated only when the circular saw blade was enclosed. The frequencies of the resonance sound generated by a circular saw blade made of acrylic plastic were the same as those generated by a steel saw blade. The resonance sound was generated regardless of the outer diameter of the circular saw blade. The peak resonant frequencies formed a step-like line during the analysis in which the rotational speed of the saw blade was steadily increased.

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圆锯箱体内的共振声特性

由于圆锯空转噪音的声级非常高，对环境有害，因此人们对如何降低圆锯空转噪音进行了一些研究。然而，传统的噪声抑制技术只能控制圆锯本身的振动，而当外壳内的空气发生共振时，会产生空转噪声。本文研究了圆锯片在箱体内空转时，圆锯片转速与共振声频率之间的关系。此外，采用声学分析的有限元方法，对箱体内空气的声压模态和频率进行了分析。结果表明，圆锯片只有在封闭状态下才会产生共振声。由丙烯酸塑料制成的圆锯片产生的共振声音频率与钢锯片产生的共振声音频率相同。无论圆锯片的外径如何，都会产生共振声。在分析过程中，共振频率峰值呈阶梯状，其中锯片转速稳步增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Bioresources 工程技术-材料科学：纸与木材

CiteScore

2.90

自引率

13.30%

发文量

397

审稿时长

2.3 months

期刊介绍： The purpose of BioResources is to promote scientific discourse and to foster scientific developments related to sustainable manufacture involving lignocellulosic or woody biomass resources, including wood and agricultural residues. BioResources will focus on advances in science and technology. Emphasis will be placed on bioproducts, bioenergy, papermaking technology, wood products, new manufacturing materials, composite structures, and chemicals derived from lignocellulosic biomass.