基于ANSYS Workbench的某汽车车架轻量化设计  

Lightweight Design of the Automobile Frame Based on ANSYS Workbench

作　　者：李稳迪 刘大龙 张瑞[1] 张凯[1] 施伟辰[1] 

机构地区：[1]上海海事大学,上海201306

出　　处：《汽车实用技术》2017年第18期51-53,60,共4页Automobile Applied Technology

摘　　要：汽车车架是汽车的关键零部件之一,其作用是支承发动机、变速器、车身等结构,并接受来自发动机的动力,保证汽车的安全行驶。通过solidworks三维建模软件建立该汽车车架的实体模型,并利用ANSYS Workbench软件对其进行有限元分析,得出车架在弯曲工况、扭转工况及制动工况下的变形及应力分布情况。结果表明,该车架的强度远远低于材料的极限强度,满足使用要求,并且在轻量化方面具有较大的提升空间。文章通过结构优化设计,重新建立模型,使得车架自重比原来降低27.5%,实现了轻量化的目标,有利于节能环保。最后,对新模型进行了模态分析,得到其固有频率和固有振型,为车架的改进和优化提供参考依据。Frame is one of the key components of the automobile, its role is to support the engine, transmission, body and other structures, and accept the engine to pass it to the power to ensure the safe driving. The 3D solid model of the automobile frame is established by solidworks software, and the finite element analysis is carried out by using ANSYS Workbench software. The deformation and stress distribution of the frame under bending, twisting and braking are obtained respectively. The results show that the strength of the flame is much lower than the ultimate strength of the material, satisfying the requirement of use, and has a large lifting space in light weight. The paper through the structural optimization design, re-establish the model, making the frame weight reduce 27.5% than the original,and achieving the purpose of lightweight, which is conducive to energy conservation and environmental protection. Finally, the modal analysis of the new model is carried out to obtain its natural frequency and vibration mode, which can provide reference for the imporvement and optimization of the frame.

关 键 词：汽车车架 有限元分析 轻量化 模态分析 

分 类 号：U463.32[机械工程—车辆工程]