某新能源轿车车架的静态结构与模态分析

Static Structure and Modal Analysis of a New Energy Car Frame

摘要: 车架作为汽车总成重要的组成部件，本文通过Solidworks软件三维建模，设计了一种铝合金材料新能源轿车车架模型，并基于有限元方法，运用Ansys软件在不同工况下的仿真，着重分析了车架的结构强度，扭转刚度及自由模态振型。结果表明，该车架在满载工况时的强度与刚度满足设计要求，并在激励源的作用下无共振现象，同时实现轻量化设计，采用新材料相较于传统汽车钢减重50%。

Abstract: Frame is an important component of automobile assembly. In this paper, a new energy car frame model made of aluminum alloy material is designed by using Solidworks 3D modeling software. Based on finite element method and Ansys software simulation under different working conditions, the structural strength, torsional stiffness and free mode shape of the frame are analyzed emphati-cally. The results show that the strength and stiffness of the frame under full load condition meet the design requirements, and there is no resonance phenomenon under the action of the excitation source. At the same time to achieve lightweight design, the use of new materials compared to the traditional automobile steel weight reduction of 50%.