弯曲与径向联合优化在车轮上的应用

Application of Bending and Radial Joint Optimization To Wheel

车轮是汽车的重要零部件,其重量直接影响整车油耗,钢车轮由轮辐和轮辋2部分装配焊接合成,在对钢车轮进行轻量化设计时,设计师主要对轮辐结构进行集成优化,由于合成装配工艺及径向加载方式的复杂性,一直无法实现轮辋结构集成优化。本文主要研究弯曲与径向联合优化设计在车轮上的应用,通过工艺优化、二次开发,DOE技术及近似模型创建等方法,利用ISIGH软件集成CATIA和ABAQUS来实现车轮弯曲与径向联合集成优化设计,在满足产品强度和刚度前提下,最大程度上实现产品轻量化,本文以长城超轻量化项目B30为研究对象,结果表明:在满足产品技术要求前提下,优化后车轮重量为7.2kg,相比目标重量7.5kg降低了0.3kg,为我司同系中最轻产品。研究结果为同类产品轻量化设计提供了极大的参考价值。

The wheel is an important part of the automobile,and its weight directly affects the fuel consumption of the whole vehicle.The steel wheel is composed of two parts:the disc and the rim.During the lightweight design of the steel wheel,the designer focuses on the integrated optimization of the disc structure.Due to the complexity of the composite assembly process and the radial loading mode,the integrated optimization of the rim structure has been unable to be achieved.This paper mainly studies the application of bending and radial joint optimization design on wheels.Through process optimization,secondary development,DOE technology and approximate model creation and other methods,the ISIGH software is integrated with CATIA and ABAQUS to achieve the integrated optimization design of wheel bending and radial joint.Under the premise of satisfying the product strength and stiffness,the product lightweight is realized to the greatest extent.This paper takes the Great Wall ultra lightweight project B30 as the research object,The results show that,on the premise of meeting the technical requirements of the product,the weight of the optimized wheel is 7.2kg,which is 0.3kg lower than the target weight of 7.5kg.It is the lightest product of our company.The research results provide a great reference value for lightweight design of similar products.