电动汽车关键声学包轻量化设计及性能稳健性分析
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摘要
针对电动汽车的轻量化设计需求,综合考虑其特有的声源分布特征,对电动汽车关键声学包部件进行轻量化研究。在不影响部件声学性能的前提下,结合试验与仿真方法对声学包材料BIOT参数进行优化,使关键声学包部件在原基础上减重58%,实现声学包轻量化的要求。同时基于声学包样件在制作、运输过程中可能存在的厚度、材料参数(流阻、密度)等方面的不确定因素,研究其对整车声学包性能稳健性的影响。结果表明,通过合理的优化分析,可设计出兼顾吸隔声性能与良好声学性能稳健性的轻量化声学包部件。
The lightweight design of electric vehicles(EVs) is studied. The characteristic of sound source distribution of the EVs is considered. At first, the lightweight design of key acoustic package components of EVs is studied. On the premise of ensuring the acoustic performance of the components, the Biot parameters of acoustic package materials are optimized by combining the test and simulation methods, and the weight of the key acoustic package components are reduced by 58%, and the target of the acoustic packet lightweight is reached. At the same time, influence of the uncertainties of thickness, material parameters(flow resistance, density) and so on in the manufacture and transportation process of the acoustic package components on the robustness performance of the whole vehicle acoustic package is studied. The results show that the lightweight acoustic package components with good robustness and sound performance can be designed by reasonable optimization analysis.
The lightweight design of electric vehicles(EVs) is studied. The characteristic of sound source distribution of the EVs is considered. At first, the lightweight design of key acoustic package components of EVs is studied. On the premise of ensuring the acoustic performance of the components, the Biot parameters of acoustic package materials are optimized by combining the test and simulation methods, and the weight of the key acoustic package components are reduced by 58%, and the target of the acoustic packet lightweight is reached. At the same time, influence of the uncertainties of thickness, material parameters(flow resistance, density) and so on in the manufacture and transportation process of the acoustic package components on the robustness performance of the whole vehicle acoustic package is studied. The results show that the lightweight acoustic package components with good robustness and sound performance can be designed by reasonable optimization analysis.
引文
[1]KIMURA KENTARO,HABUCHI RYOJI,KONOTETSUYA.Development of a lightweight soundproof cover using the biot theory and an example application to a transmission[EB/OL].http://papers.sae.org/2016-01-0517,2016.
[2]GUR YUKSEL,PAN JIAN,WAGNER DAVID.Sound package development for lightweight vehicle design using statistical energy analysis(SEA)[EB/OL].http://papers.sae.org/2015-01-2302,2015.
[3]ZHANG QIJUN,PARRETT ALAN.Lightweight acoustic system performance target setting process[EB/OL].http://papers.sae.org/2013-01-1982,2013.
[4]庞剑.汽车车身噪声与振动控制[M].北京:机械工业出版社,2015:269-274.
[5]邓江华.防火墙总成特性对汽车声学包性能影响[J].噪声与振动控制声与振动控制,2014,34(3):78-81.
[6]CONNELLY TERENCE.Prediction of biot properties for describing fibrous materials in sea models[EB/OL].http://papers.sae.org/2013-01-1993,2013.
[2]GUR YUKSEL,PAN JIAN,WAGNER DAVID.Sound package development for lightweight vehicle design using statistical energy analysis(SEA)[EB/OL].http://papers.sae.org/2015-01-2302,2015.
[3]ZHANG QIJUN,PARRETT ALAN.Lightweight acoustic system performance target setting process[EB/OL].http://papers.sae.org/2013-01-1982,2013.
[4]庞剑.汽车车身噪声与振动控制[M].北京:机械工业出版社,2015:269-274.
[5]邓江华.防火墙总成特性对汽车声学包性能影响[J].噪声与振动控制声与振动控制,2014,34(3):78-81.
[6]CONNELLY TERENCE.Prediction of biot properties for describing fibrous materials in sea models[EB/OL].http://papers.sae.org/2013-01-1993,2013.