基于數(shù)字化路譜激勵的車內(nèi)噪聲仿真分析與優(yōu)化

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中圖分類號：U491.91 文獻標志碼：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

伴隨中國汽車制造業(yè)的不斷發(fā)展以及民眾生活質(zhì)量的持續(xù)躍升，駕乘空間內(nèi)的靜謐體驗日益成為衡量現(xiàn)代汽車性能的關(guān)鍵考量因素[1]之一。（剩余5486字）