基于NVH性能的电动汽车车身模态匹配与优化  

Modal Matching and Optimization of Electric Vehicle Body Based on NVH Performance

作　　者：曹勇[1] 乐玉汉[1] 姚泽胜 

机构地区：[1]武汉理工大学汽车工程学院 [2]山东临沂沂达电动汽车有限公司

出　　处：《汽车工程师》2011年第4期31-34,共4页Automotive Engineer

摘　　要：为了减小车内噪声,提高电动汽车的NVH性能,文章应用车身模态匹配策略和流程,制定了模态频率规划表,利用有限元分析软件Hypermesh和求解器Nastran软件,对车身进行了模态分析与匹配,并对车身各部件的模态参数进行了灵敏度分析和优化。通过仿真验算和试验得到了较好效果,证明了分析方法的可行性,为电动汽车的NVH研发工作提供了参考。In order to reduce vehicle noise and improve the NVH performance of electric vehicles, adopting modal matching strategy and process, formulating a planning table of modal frequency, the body modal analysis and matching is proceeded by using the finite element analysis software Hypermesh and Nastran, and the sensitivity analysis and optimization of body parts modal parameters is done. Better results are gained by simulated checking calculation and test. It is certificated that this method is feasible and it provides reference for the NVH development of electric vehicles.

关 键 词：NVH 电动汽车 模态分析:优化 

分 类 号：U469.72[机械工程—车辆工程]