摘要
通风吸声超材料是目前解决通风降噪问题的热点研究,可围绕通风吸声超材料的研究方案开展大学物理实验教学。本研究方案采用有限元仿真软件COMSOL Multiphysics理论建模并计算,优化设计基于不完美亥姆霍兹谐振腔的通风吸声超材料,该超材料在调整结构参数后能在低频噪音下实现宽频吸收;利用3D打印技术打印超材料结构,并采用突破黑匣子的实验装置定量测量声学超材料的吸声性能。本文将前沿、热点研究引入大学物理实验教学,模拟、还原科学研究的过程,增强实验的高阶性、创新性和挑战度,采用“小组式自主探究+答辩汇报”的教学模式,全面提升学生的“5C”核心能力。
The college physics experiment educational campaigns can surround the research solutions on ventilated sound-absorbing meta-materials,which are in the spotlight of ventilation and noise-reduction issue recently.The research plan uses the finite element simulation software COMSOL Multiphysics for theoretical modeling and calculation,and optimizes the design of ventilating and sound-absorbing metamaterials based on imperfect Helmholtz resonators.By adjusting the structural parameters,the meta-material can achieve broadband absorption within low-frequency noise.The metamaterial structures are printed using 3D printing technology,and the acoustic performance of the metamaterials is quantitatively measured using an experimental setup that breaks through the“black box”approach.Integrating cutting-edge and hot topics into university physics experimental teaching,simulating and recreating the scientific research process,enhances the higher-order nature,innovation,and challenge of the experiments.The teaching model of“group independent exploration-defense report”is adopted to comprehensively enhance students“5C”core competencies.
作者
刘婷
熊泓媛
黄映洲
潘量
蒲贤洁
徐玮婧
肖鹏
LIU Ting;XIONG Hongyuan;HUANG Yingzhou;PAN Liang;PU Xianjie;XU Weijing;XIAO Peng(School of Physics,Chongqing University,Chongqing 401331;National Demonstration Center For Experimental Physics Education,Chongqing University,Chongqing 401331)
出处
《物理与工程》
2024年第5期153-159,共7页
Physics and Engineering
基金
重庆市高等教育教学改革研究项目(No.223022、No.233024、No.243011)
重庆大学教师教学发展专项项目(No.2023JF05)
2023年重庆大学实验技术人员研修项目(No.20231202、No.20231110、No.20231204)
教育部产学合作协同育人项目(No.231000532113527、No.231000532115242、No.231104090201308)。
关键词
低频吸声
声学超材料
大学物理实验
科教融合
low-frequency sound absorption
acoustic meta-materials
college physics experiments
integration of science and education
