摘要
在整车开发过程中,路试与车架试验反映其动态特性及与底盘和车身匹配方面所存在的问题。为此,基于有限元模型为研究对象,进行车架动态特性的分析设计,以期提出相关改进设计方案。主要通过建立准确的有限元模型为基础,之后通过模型的简化,几何模型的建立,单元类型的选择,网格划分,部件的连接关系等详细结合设计参数进行设定。最后通过车架模态试验,调整和修正了车架模型,使其与试验结果基本一致。以此为基础,开展相关设计方案的计算论证工作。文章主要通过车架结构参数对车架动态特性(频率与振型)的影响进行分析。
In the process of vehicle development,road test and frame test reflect its dynamic characteristics and problemswith the chassis and body matching.Therefore,based on the finite element model as the research object,the analysis anddesign of the dynamic characteristics of the frame are carried out,so as to propose the related improvement design scheme.Mainly through the establishment of an accurate finite element model,through model simplification,after the establishmentof the geometric model,the selection of unit type,mesh division,in detail combined with the design parameters such asconnection relation of setting.Finally,the frame model is adjusted and modified by frame mode test,which is consistent withthe experimental results.Based on this,the calculation and demonstration of related design schemes are carried out.Theinfluence of frame structure parameters on dynamic characteristics of frame(frequency and mode)is analyzed.
作者
王浩
Wang Hao(Anhui jianghuai automobile group co., LTD., Anhui Hefei 230601)
出处
《汽车实用技术》
2017年第19期118-120,共3页
Automobile Applied Technology
关键词
有限元
车架
优化分析
finite element
The frame
Optimization analysis
