| 薄膜声学超材料降噪性能分析及设计 |
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| 引用本文： | 邱克鹏,秦云飞,费晨,陈智谋,张卫红.薄膜声学超材料降噪性能分析及设计[J].噪声与振动控制,2021,41(2):7-14. |
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| 作者姓名： | 邱克鹏 秦云飞 费晨 陈智谋 张卫红 |
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| 作者单位： | 西北工业大学工程仿真与宇航计算技术联合实验室;上海卫星装备研究所 |
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| 基金项目： | 国家重点基础研究发展计划资助项目(2017YFB1102800);国家自然科学基金资助项目(11772258,51975470)。 |
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| 摘 要： | 为了提升薄膜型声学超材料的隔声性能,首先采用模态叠加法和遗传优化算法实现一种反射型薄膜声学超材料单胞多参数结构优化设计;然后为了拓宽薄膜声学超材料单胞结构的隔声带宽,进一步提出一种能够实现低频宽带吸声的十字型薄膜声学超材料.结果表明:采用经过优化所得的反射型薄膜声学超材料可有效提高隔声带宽和离散频率的隔声量;并且十字型...
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| 关 键 词： | 声学 薄膜声学超材料 吸声系数 隔声量 优化设计 模态叠加法 遗传算法 |
Analysis and Design of Sound Insulation Performance of Membrane-type Acoustical Metamaterials |
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| QIU Kepeng,QIN Yunfei,FEI Chen,CHEN Zhimou,ZHANG Weihong.Analysis and Design of Sound Insulation Performance of Membrane-type Acoustical Metamaterials[J].Noise and Vibration Control,2021,41(2):7-14. |
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| Authors: | QIU Kepeng QIN Yunfei FEI Chen CHEN Zhimou ZHANG Weihong |
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| Affiliation: | (Joint Lab of Engineering Simulation and Aerospace Computing Technology,Northwestern Polytechnical University,Xi’an 710072,China;Shanghai Institute of Spacecraft Equipment,Shanghai 200240,China) |
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| Abstract: | The further improvement of the sound insulation performance of membrane-type acoustical metamaterials(MAM)is studied.First of all,the multi-parameter structure optimization design of a reflective membrane-type acoustical metamaterial cell is realized by using mode superposition method and genetic optimization algorithm.Then,a X-type membrane-type acoustical metamaterial,which can achieve low-frequency sound absorption,is proposed to broaden the sound insulation bandwidth of the membrane-type acoustical metamaterial cell structure.The research results show that the optimized reflective membrane-type acoustical metamaterial can effectively raise the sound insulation bandwidth and the sound transmission loss of discrete frequencies.And the average sound absorption coefficient of the X-type membrane-type acoustical metamaterial cell in the frequency band of 510 Hz-820 Hz reaches 0.884,which breaks the limitation that the membranetype acoustical metamaterial cell has excellent sound absorption performance only in the narrow band near the resonance frequency. |
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| Keywords: | acoustics membrane-type acoustic metamaterial absorption coefficient transmission loss optimization design modal superposition method genetic algorithm |
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