用统计能量方法分析和优化前围声学包

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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。

关键字：汽车；发动机机舱；SEA；前围声学包；统计能量法；优化

中图分类号：TB533+.2  文献标志码：B  文章编号：1671-5276（2024）02-0166-04

Statistical Energy Analysis And Optimization of Dash Sound Package

XU Linqian1， YUE Zhiqiang2， GENG Jian2

（1. Qinghai University of Technology，Xining 810028，China； 2. Great Wall Motor Co.， Ltd.， Baoding 071033，China）

Abstract：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.

Keywords：vehicle；engine cabin；SEA；dash sound package；statistical energy method；optimization

0 引言

随着汽车工业的快速发展，消费者对汽车的关注不仅仅在外造型与使用方面，还考虑乘坐的舒适性［1］。（剩余4146字）