乘用车声学包设计开发与优化技术研究.pdfVIP

第 34卷第 4期 声 学 技 术 Vol .34, No.4 2015年 08月 Technical Acoustics Aug., 2015 乘用车声学包设计开发与优化技术研究 邓江华1，宋 俊2，李 灿1，张斌瑜 (1. 中国汽车技术研究中心汽车工程研究院，天津 300300；2. 广汽集团广汽研究院，广东广州 510640) 2 摘要：声学包对车内噪声水平及声学环境有着重要的作用，在很多情况下，国产汽车声学包开发都是基于标杆车型 的直接逆向，或凭借以往经验的简单开发。但更有价值的方法是在设计早期阶段就具备开发声学包部件的能力，即 根据整车级目标定义对声学包部件进行开发和优化。以对某乘用车的声学包开发和优化过程为例，详细说明了乘用 车声学包开发优化过程中的主要步骤与关键技术，旨在为声学包开发设计提供指导和参考依据。基于此，在乘用车 早期设计阶段即可评估不同声学包方案的优劣，及其对车内噪声水平及声品质的影响，以指导内饰件的设计优化； 同时，在满足声学包目标要求的基础上，对声学包方案进行优化，以满足成本和质量的优化控制。 关键词：声学包；开发；优化；统计能量方法 中图分类号：TB533+.2 文献标识码：A 文章编号：1000-3630(2015)-04-0353-05 DOI编码：10.16300/ki.1000-3630.2015.04.012 Development and optimization of sound package for passenger vehicle DENG Jiang-hua 1 , SONG Jun 2 , LI Can 1 , ZHANG Bing-yu (1. China Automotive Technology Research Center, Automotive Engineering Research Institute, Tianjin 300162, China; 2. Guangzhou Automobile Group Co., Ltd, Automotive Engineering Institute, Guangzhou 510640, Guangdong, China) 2 Abstract: Sound package plays an important role in interior noise level and sound quality of passenger vehicle. For this reason, the definition, design, and development of a sound package are significant to meet acoustic target of ve- hicle-level. In many situations, this development is conducted experimentally, or reversely developed based on bench- mark. Of more value is the ability to develop and optimize sound package components in the early design phase, i.e. to leverage analytical tools for defining component-level requirements and targets to meet the vehicle-level targets, and ul- timately to fulfill the final customer’s expectations. This paper presents a development and optimization process of sound package design combining the CAE SEA-based prediction and experiment. Based on the above process, the per- formance of sound package and the mid-high frequenc