基于仿真和实车试验法的三厢轿车装配车身模态频率关键系统研究  

Research on Key Systems of Modal Frequency of Sedan Body Assembly Based on Simulation and Vehicle Test Method

作　　者：李国柱 LI Guozhu

机构地区：[1]上汽集团创新研究开发总院,上海201804

出　　处：《上海汽车》2024年第8期16-21,共6页Shanghai Auto

摘　　要：文章为优化三厢轿车的整车模态,提高驾乘的舒适性,通过对三厢轿车的装配车身子系统进行拆分,利用敏感性分析,筛选出关键的零件。根据布置位置和功能对零件进行重新组合,对零件组合进行试验设计和仿真试验,最终确认影响模态的核心零件,并在实车上进行验证。在分析中挖掘出装配车身模态的最佳优化方向以及一套对于多因素复杂问题的分析流程。In order to optimize the overall modality of a three-box sedan and enhance the comfort of driving and riding,the assembly body subsystem of the three-box sedan is disassembled.Sensitivity analysis is used to identify key parts.Based on the layout position and function,parts are recombined,and experimental design and simulation experiments are conducted on the part combinations to determin the core parts that effect the modality,and then verified on the actual vehicle.The best optimization methods for the assembly body modality are revealed,along with a set of analysis processes for complex problems involving multiple factors.

关 键 词：NVH 性能 装配车身 模态频率 

分 类 号：U467[机械工程—车辆工程]