某新型车铝合金车轮结构优化与设计研究  

Structure Design and Optimization of Aluminum Alloy Wheel

作　　者：莫旭辉[1] 欧晓波[1] 钟志华[1] 高伟钊[1] 

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,湖南长沙410082

出　　处：《计算机仿真》2012年第11期360-364,共5页Computer Simulation

基　　金：跃升计划--中国高水平汽车自主创新能力建设项目(61075002);教育部长江学者与创新团队发展计划资助项目(531105050037)

摘　　要：为提高车轮设计质量,应用有限元方法,根据国家标准,对某型车铝合金车轮进行疲劳寿命分析,并结合试验设计、近似建模技术及基于蒙特卡罗模拟技术的6σ可靠性优化设计理念,从提高车轮寿命、减轻重量角度进行车轮优化设计。结果表明,轮辐上开孔能够有效引导车轮受载情况下的应力分布,改善疲劳载荷的循环特性,从而有效地提高车轮疲劳寿命。通过对车轮进行确定性优化和基于6σ的可靠性优化的对比,分析了设计变量波动对产品设计质量的影响,结果表明,可靠性优化明显优于确定性优化,具有较高的工程实用价值。To improve the design quality of the wheels, finite element analysis （FEA） was carried out consulting the automobile industry standard to analyze the fatigue life of the Aluminum Alloy wheels. A six sigma reliability opti- mization design method based on the experimental design, kriging metamodel technique and Monte Carlo simulation technique was proposed to improve the fatigue life and reduce the weight of the structure. The results from the optimi- zation indicate that slotting on the spoke can guide the stress distribution, and ameliorate the property of the fatigue cycle load so that the life cycle of the wheel was improved. Furthermore, the influence of the fluctuation of the varia- bles was analyzed in comparison with the deterministic optimization and the six sigma reliability-based optimization, and it demonstrates that the six sigma reliability-based optimization which takes the uncertainty of the design variables into account can obtain better optimum solutions and have a high practical value in engineering.

关 键 词：疲劳寿命 参数波动 可靠性优化 车轮 

分 类 号：TP202.7[自动化与计算机技术—检测技术与自动化装置]