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course:interesting_problems:2024:topic7:start [2023/09/12 16:28]
whyx 创建
course:interesting_problems:2024:topic7:start [2023/10/09 20:46] (当前版本)
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 ====== 7. Giant Sounding Plate ====== ====== 7. Giant Sounding Plate ======
 +=====课题描述=====
  
 +7. **Giant Sounding Plate 巨型发声板**
 +
 +When a large, thin and flexible plate (e.g. plastic, metal or plexiglass) is bent, it may produce a loud and unusual howling sound. Explain and investigate this phenomenon.
 +
 +当一个又大又薄又有弹性的板(如塑料、金属或有机玻璃)被弯曲时,它可能会发出一种响亮而不寻常的呼啸声。解释并研究这一现象。
 +
 +===== 参考文献 =====
 +
 +Поющая пластина(2) - Proposal IYPT 2022 (youtube, ЭйНШтейн,​ 16.09.2020),​ https://​youtu.be/​yFvy0T_s904
 +
 +S. Shankar, P. Bryde, and L. Mahadevan. Geometric control of topological dynamics in a singing saw. PNAS 119, 17, e2117241119 (2022)
 +
 +R. Worland. The musical saw and the flexatone: An experimental study of confined vibrational modes in metal plates of variable curvature. J. Acoust. Soc. Am. 139, 2011-2011 (2016)
 +
 +R. Cook. Vibration of a segment of a non-circular cylindrical shell: The "​musical saw" problem. J. Sound Vibrat. 146, 339-341 (1991)
 +
 +A. Tubis and R. E. Davis. The musical saw-operational features and simple dynamical theory. J. Acoust. Soc. Am. 71, S82-S83 (1982)
 +
 +J. F. M. Scott and J. Woodhouse. Vibration of an elastic strip with varying curvature. Phil. Trans. R. Soc. A 339, 587-625 (1992)
 +
 +R. Worland. The musical saw: Musical acoustics of trapped vibrational modes in a curved blade. J. Acoust. Soc. Am. 145, 1750-1750 (2019)
 +
 +The unique mathematical physics of the singing saw (Amit Malewar,​ techexplorist.com,​ Apr 23, 2022),​ https://​www.techexplorist.com/​unique-mathematical-physics-singing-saw/​
 +
 +Musical Saw / Scie Musicale : Gounod, Ave Maria par Grégoire Blanc (youtube, Grégoire Blanc, 15.12.2014),​ https://​youtu.be/​i5KiodkF2m4
 +
 + N. H. Fletcher and T. D. Rossing. The physics of musical instruments (New York, SpringerVerlag,​ 1991)
 +
 +Lord Rayleigh. The Theory of Sound. (London, Macmillan, 1877, Courier Dover Publications,​ 1945),​ http://​books.google.com/​books?​
 +===== 实验计划与进展 =====
 +
 +====主要脉络====
 +
 +2023.10.10-2023.10.24 利用不同类型的板材,探究并选取合适的实验变量
 +
 +2023.10.25-2023.11.09 使用Au2023,记录声音的波谱
 +
 +2023.11.10-2023.11.24 对选取的变量进行研究,实验记录数据
 +
 +2023.11.25-2023.12.09 考虑作用方式等因素对发声的影响
 +
 +2023.12.10-2023.12.24 实验数据比对,修正理论模型
 +
 +====具体记录====
 +
 +===第一学期===
 +
 +<tabbox 第01周>​
 +
 +
 +
 +<tabbox 第02周>​
 +组建团队,和符老师交流后明确了课题的基本图像和前期应该做什么准备工作
 +
 +
 +<tabbox 第03周>​
 +小组成员集体学习相关理论知识
 +
 +
 +<tabbox 第04周>​
 +学习频谱分析有关知识,下载并学习audition
 +
 +<tabbox 第05周>​
 +国庆放假
 +
 +
 +<tabbox 第06周>​
 +
 +===周一===
 +
 +完成预实验,确定研究的自变量与因变量,设计改进实验装置
 +
 +
 +<tabbox 第07周>​
 +
 +
 +
 +<tabbox 第08周>​
 +
 +
 +
 +<tabbox 第09周>​
 +
 +
 +
 +<tabbox 第10周>​
 +
 +</​tabbox>​
 +
 +===== 讨论区 =====
 +
 +>​有什么问题可以在这里留言(不过好像用微信更快,但记得保存记录 (..•˘_˘•..)) ​
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