Time‐resolved strain and deformation measurement on the vibrating saxophone reed

IF 1.8 3区材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Strain Pub Date : 2023-04-12 DOI:10.1111/str.12437

Enis Ukshini, J. Dirckx

引用次数: 0

Abstract

Single‐reed musical instruments, such as the saxophone, generate sound through a complex interplay between the mechanics of the reed and the hydrodynamic and acoustic pressure in the instrument mouthpiece. To understand this complex mechanism, experimental data are lacking. This paper presents full‐field, time‐resolved measurements of strain and displacement of a vibrating saxophone reed, measured under mimicked realistic playing conditions. It is found that strain along the length axis of the reed is mainly expansive, except in a small zone near the tip where it becomes compressive when the reed touches the front edge of the mouthpiece. At the instant in the vibration phase where the reed touches the mouthpiece, significant bending and compressive strain appear along the direction perpendicular to the reed axis. Strain magnitudes in both directions are similar, with absolute values of 0.1%. Full‐field strain maps reveal subtle characteristics which are not revealed by displacement measurements. Bi‐axial bending and strain may be an essential component in reed mechanics, which up till now has been fully neglected in modelling.

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萨克斯管簧片振动的时间分辨应变和变形测量

单簧片乐器，如萨克斯管，通过簧片的力学和乐器口的流体动力和声压之间的复杂相互作用来产生声音。为了理解这种复杂的机制，缺乏实验数据。本文介绍了在模拟现实演奏条件下，对振动萨克斯管簧片的应变和位移进行全场、时间分辨测量。结果表明，沿簧片长度轴方向的应变主要为膨胀应变，除了簧片接触吸口前缘时，在簧片尖端附近的一小块区域应变变为压缩应变。在振动阶段，簧片接触吹口的瞬间，沿垂直于簧片轴的方向出现明显的弯曲和压缩应变。两个方向的应变幅值相似，绝对值均为0.1%。全场应变图揭示了位移测量无法揭示的微妙特征。双轴弯曲和应变可能是簧片力学的重要组成部分，但迄今为止在建模中完全被忽视。

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

Strain 工程技术-材料科学：表征与测试

CiteScore

4.10

自引率

4.80%

发文量

期刊介绍： Strain is an international journal that contains contributions from leading-edge research on the measurement of the mechanical behaviour of structures and systems. Strain only accepts contributions with sufficient novelty in the design, implementation, and/or validation of experimental methodologies to characterize materials, structures, and systems; i.e. contributions that are limited to the application of established methodologies are outside of the scope of the journal. The journal includes papers from all engineering disciplines that deal with material behaviour and degradation under load, structural design and measurement techniques. Although the thrust of the journal is experimental, numerical simulations and validation are included in the coverage. Strain welcomes papers that deal with novel work in the following areas: experimental techniques non-destructive evaluation techniques numerical analysis, simulation and validation residual stress measurement techniques design of composite structures and components impact behaviour of materials and structures signal and image processing transducer and sensor design structural health monitoring biomechanics extreme environment micro- and nano-scale testing method.