Kagome点阵夹芯超材料的汽车前围板隔振特性研究  

Vibration Isolation Characteristics of Automobile Front Coaming Based on Kagome Lattice Sandwich Metamaterial

作　　者：鲍瑞雪 齐臣 田香玉 BAO Ruixue;QI Chen;TIAN Xiangyu(School of Transportation and Vehicle Engineering,Shandong University of Technology,Zibo 255000,Shandong,China;School of Vehicle Engineering,Zibo Vocational Institude,Zibo 255300,Shandong,China)

机构地区：[1]山东理工大学交通与车辆工程学院,山东淄博255000 [2]淄博职业学院汽车工程学院,山东淄博255300

出　　处：《噪声与振动控制》2025年第1期184-189,共6页Noise and Vibration Control

基　　金：国家自然科学基金资助项目(12202252);山东省自然科学基金资助项目(ZR2022QE018)。

摘　　要：为高效控制汽车前围板振动噪声,弥补传统材料抑制低频振动性能的不足及易燃、环保性能低的缺陷,设计一种基于Kagome点阵的局域共振型夹芯超材料,建立单胞结构的有限元模型,计算并分析其能带结构、带隙产生机理和弹性波传播特性,以及关键几何参数对带隙频段的影响,利用正交实验极差分析法(Statistical Product and Service Software Automatically,SPSSAU)对关键几何参数进行优化,同时开展基于该材料的汽车前围板隔振性能的研究。研究表明,所设计的Kagome点阵夹芯超材料能够实现低频带隙;增加圆块厚度和半径会使带隙频段整体向低频方向移动,且拓宽低频带隙;减小韧带宽度会使带隙频段向低频区域移动,且使带隙宽度减小。将优化后的Kagome点阵夹芯超材料应用于汽车前围板,可明显提高其隔振性能。In order to control the vibration and noise of automobile front coaming effectively and make up for the shortcomings of traditional materials such as low frequency vibration suppression and low inflammability and environmental protection,a local resonance type sandwich metamaterial based on Kagome lattice was designed.The finite element model of single cell structure was established,and the band structure,band gap generation mechanism and elastic wave propagation characteristics were calculated and analyzed.And the influence of key geometric parameters on band gap frequency band was analyzed also.The orthogonal Statistical Product and Service Software Automatically(SPSSAU)was used to optimize the key geometric parameters,and the vibration isolation performance of the sandwich metamaterial in the automobile front cob was studied.The research results show that the designed Kagome lattice sandwich metamaterial can realize low band gap.Increasing the thickness and radius of the block can make the whole band gap move to the low frequency side and widen the low frequency band gap.Reducing the width of the ligament can make the band gap move to the low frequency region,and the band gap width will decrease.The optimized Kagome lattice sandwich metamaterial applied to automobile front coaming can obviously improve its vibration isolation performance.

关 键 词：振动与波 汽车前围板 Kagome点阵夹芯超材料 有限元模型 带隙 低频带隙 

分 类 号：O328[理学—一般力学与力学基础] TB535.1[理学—力学]