基于数字化路谱激励的车内噪声仿真分析与优化

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中图分类号：U491.91 文献标志码：B

Abstract：In order to explore the problem of interior noise caused by road irregularities and improve vehicle noise performance，a finite element model of entire vehicle，including the cavity and CD tire，is established，and the power spectral density of each tire displacement is computed，based on road noise analysis theory and digital road spectrum excitation calculation methods. Using the random response analysis method，the noise response of the entire vehicle is calculated. The noise response is optimized through transfer path analysis and grid point analysis. The results show that the vehicle interior noise can be significantly reduced by the optimization method，and the reliability of this optimization method and the analysis model is verified.

Key words： digital road spectrum； road noise； power spectral density； random response analysistesting；finite element

0引言

伴随中国汽车制造业的不断发展以及民众生活质量的持续跃升，驾乘空间内的静谧体验日益成为衡量现代汽车性能的关键考量因素[1]之一。（剩余5486字）