基于有限元法的汽车座椅蒙皮材料降噪效果分析  

Analysis of the Noise Reduction Effect of Car Seat Skin Based on Finite Element Method

作　　者：周泽奎 赵海军 李娜 ZHOU Zekui;ZHAO Haijun;LI Na(College of Automobile and Transportation,Tianjin Vocational and Technical Normal University,Tianjin 300222,China)

机构地区：[1]天津职业技术师范大学汽车与交通学院,天津300222

出　　处：《汽车实用技术》2023年第22期134-137,共4页Automobile Applied Technology

基　　金：国家自然科学基金资助项目(U1604141)。

摘　　要：因车内存在大量的空气,故可将其划分为不同大小的空气体积单元。随着科技的发展,未来将实现每个声腔单元不同程度的降噪,文章在研究车内局部空间的降噪时,将副驾驶座椅模型导入到有限元软件HyperMesh中,并在座椅周围划分局部声腔,建立声固耦合模型,对该声腔单元施加不同类型的激励工况时,分析比较两种人造革材料聚氨酯(PUR)和聚氯乙烯(PVC)为座椅蒙皮材料时的声压响应,为车内降噪提供了一定的参考。There is a large amount of air in the car,which can be divided into air volume units of different sizes.With the development of science and technology,noise reduction of different degrees of each cavity unit will be realized in the future.Therefore,this paper studies the noise reduction of local space in the car,imports the co-driver seat model into the finite element software HyperMesh,divides local cavity around the seat,and establishes a sound-structure coupling model.When different excitation conditions are applied to the acoustic cavity unit,the sound pressure response of two kinds of artificial leather materials,polyurethane(PUR)and polyvinyl chloride(PVC),are analyzed and compared,which provided a certain reference for noise reduction in the car.

关 键 词：声腔单元 声固耦合 蒙皮材料 降噪效果 

分 类 号：U463.836[机械工程—车辆工程]