Acoustic Modelling and Analysis of Vehicle Interior Noise Based on Numerical Calculation
In this paper, various numerical calculation methods are rigorously combined to model and analyze the acoustic characteristics of a heavy truck cab. Firstly a brief introduction of different numerical calculation methods is given, then the finite element structure model and cavity model of the cab are built. The statistical energy analysis models of the cab, including structural subsystems and cavity subsystems ,are also built and used in the highfrequency range. The panel acoustic contribution analysis and the energy transfer path contribution analysis are carried out to find the panels which contribute most to the sound pressure inside the cab. Based on the analysis results, structure modification of these panels has been proposed with acoustics topology optimized. The optimization result shows that the sound pressure level on the side of the drivers right ear can be reduced by a few decibels. Necessary tests to validate the models are also administered.
numerical calculation system modelling contribution analysis
Wang binxing Zheng sifa Zhoul lin Liu shengqiang Lian xiaomin Li keqiang
State key Lab of Automotive Safety and Energy Tsinghua University Beijing, China
国际会议
长沙
英文
404-407
2010-05-11（万方平台首次上网日期，不代表论文的发表时间）