Understanding the effect of hammering process on the vibration characteristics of cymbals
Understanding the effect of hammering process on the vibration characteristics of cymbals
复制标题
了解锤击过程对镲片振动特性的影响
DOI：
10.1088/1742-6596/744/1/012110
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
T. Mizuta and K. Osamura
中科院分区：
文献类型：
--
作者：
F. Kuratani;T. Yoshida;T. Koide;T. Mizuta and K. Osamura
钹是用作打击乐器的薄圆顶板。当钹被敲击时，它们会振动并发出声音。钹是通过旋转成型，锤击，车床。旋压成形形成了钹的基本形状，这决定了钹的基本振动特性。敲击和车削通过改变钹的振动特性来产生特定的声音调整。在本研究中，我们研究敲击钹如何影响其振动特性。敲击会使钹表面产生塑性变形（小而浅的凹痕），从而在整个钹表面产生残余应力，这些残余应力会改变钹的振动特性。我们对钹进行有限元分析，以获得其应力分布和振动特性的变化。为了再现应力分布，我们使用热应力分析，然后根据该应力分布进行振动分析。这些结果表明，每个钹的模式有不同的灵敏度的热负荷（即锤击）。该差异引起频率响应和偏转形状的变化，这显著提高了声音辐射效率。此外，我们解释的应力和模态应变能分布的自然频率的变化。
Cymbals are thin domed plates used as percussion instruments. When cymbals are struck, they vibrate and radiate sound. Cymbals are made through spin forming, hammering, and lathing. The spin forming creates the basic shape of the cymbal, which determines its basic vibration characteristics. The hammering and lathing produce specific sound adjustments by changing the cymbal's vibration characteristics. In this study, we study how hammering cymbals affects their vibration characteristics. The hammering produces plastic deformation (small, shallow dents) on the cymbal's surface, generating residual stresses throughout it. These residual stresses change the vibration characteristics. We perform finite element analysis of a cymbal to obtain its stress distribution and the resulting change in vibration characteristics. To reproduce the stress distribution, we use thermal stress analysis, and then with this stress distribution we perform vibration analysis. These results show that each of the cymbal's modes has a different sensitivity to the thermal load (ie, hammering). This difference causes changes in the frequency response and the deflection shape that significantly improves the sound radiation efficiency. In addition, we explain the changes in natural frequencies by the stress and modal strain energy distributions.