汽车工程学报2024，Vol.14Issue(1)：144-153,10.DOI:10.3969/j.issn.2095‒1469.2024.01.15
多孔材料与声腔、钣金耦合的研究及建模方法标定
Research on Coupling of Porous Material with Acoustic Cavity and Sheet Metal,and Calibration of the Modeling Method
张荣荣 1Charles ZHANG 1洪卫芳 1李永超1
作者信息
- 1. 比亚迪汽车工业有限公司,广东,深圳 518000
- 折叠
摘要
Abstract
To overcome the challenges of NTF simulation accuracy in vehicle NVH simulations,the paper designed and constructed a"rigid-wall occupant cabin",which reduced the coupling effect between the"acoustic cavity mode"and the"container"to a negligible extent.Based on the rigid-wall passenger cabin,the influence of sub-acoustic cavities on the overall acoustic cavity mode was analyzed,and the modeling method for porous materials was discussed.The porous material models such as seats and carpets were established,and the effect of front wall sound insulation material on the coupling of sheet metal vibration and acoustic cavity mode was analyzed quantitatively.The simulation and test results show that the cavity mode,air-borne sound transfer function,structural vibration transfer function and sound transfer function all achieve good simulation accuracy.The findings of this paper provide a reference for the control of low frequency road noise and engine noise.关键词
声腔模态/多孔吸声材料/空气传递噪声/结构传递噪声/有限元建模/试验仿真对标Key words
cavity mode/porous material/air born noise/structure born noise/finite element modeling/orrelation between test and simulation分类
通用工业技术引用本文复制引用
张荣荣,Charles ZHANG,洪卫芳,李永超..多孔材料与声腔、钣金耦合的研究及建模方法标定[J].汽车工程学报,2024,14(1):144-153,10.
