基于CAE的汽车车架强度及模态分析  

Strength and Modal Analysis of Automobile Frame Based on CAE

作　　者：王瑞君 孙瑜 

机构地区：[1]一汽解放汽车有限公司,吉林长春130011

出　　处：《商用汽车》2024年第6期68-70,74,共4页Commercial Vehicle

摘　　要：汽车几乎所有的总成零部件均通过支架安装在车架总成上,如驾驶室、发动机、油箱、蓄电池等。车架总成作为汽车结构中极为关键的总成部件之一,承担着各大总成所产生的质量、弯矩和纵向力。当车辆在不平坦的路面上行驶时,车架还可能会产生扭转角度,因此车架必须具备足够的强度。本文采用CAE有限元分析方法,建立了载货车车架的强度分析模型,并明确了车架在多种工况(包括垂直、前扭转、后扭转、对扭和侧向等)下的边界条件及相应的计算方法。这一研究为车架的结构设计与优化提供了理论依据。Almost all assembly parts of the car are installed on the frame assembly through the bracket,such as the cab,engine,fuel tank,battery and so on.Frame assembly is one of the most important assembly in the car,it bears the mass of the major assembly and the bending moment and longitudinal force generated,uneven road will also make the frame produce torsion Angle,so the frame needs to have enough strength.In this paper,the strength analysis model of truck frame is established by CAE finite element analysis method.The boundary conditions and calculation methods of frame vertical,front torsion,back torsion,counter torsion and side were determined,which provided a theoretical basis for frame structure design.

关 键 词：汽车车架 载货车车架 CAE 强度分析 模态分析 

分 类 号：U463[机械工程—车辆工程]