用统计能量方法分析和优化前围声学包  

Statistical Energy Analysis And Optimization of Dash Sound Package

作　　者：许林倩 岳志强 耿建 XU Linqian;YUE Zhiqiang;GENG Jian(Qinghai University of Technology,Xining 810028,China;Great Wall Motor Co.,Ltd.,Baoding 071033,China)

机构地区：[1]青海理工大学,青海西宁810028 [2]长城汽车有限公司,河北保定071033

出　　处：《机械制造与自动化》2024年第2期166-169,共4页Machine Building & Automation

摘　　要：前围声学包是阻隔机舱内噪声向车内传递的最主要手段。建立SEA模型,从材料参数、厚度和覆盖率等方面分析内前围的隔声性能,从泄漏方面分析过孔件的隔声性能,对前围声学包进行优化,以提高其隔声性能,降低整车车内噪声。Dash sound package is the most important means to block the noise in cabin from transmitting to vehicle.This paper builds the SEA model,analyzes the sound insulation performance of the inner enclosure from the aspects of material parameters,thickness and coverage,analyzes the sound insulation performance of the perforated parts in terms of leakage,and optimizes the dash sound package of the front enclosure,so as to improve its sound insulation performance and reduce the noise in vehicle.

关 键 词：汽车 发动机机舱 SEA 前围声学包 统计能量法 优化 

分 类 号：TB533.2[理学—物理]