基于FAHP-TOPSIS法的一体化前舱盖轻量化设计  

Lightweight design of integrated engine hood based on FAHP-TOPSIS method

作　　者：李书华 贝璟 吴姚烨 蒋泽龙 张代胜 LI Shuhua;BEI Jing;WU Yaoye;JIANG Zelong;ZHANG Daisheng(College of Automotive and Traffic Engineering,Hefei University of Technology,Hefei 230009,China;Research Institute of Intelligent Manufacturing Technology,Hefei University of Technology,Hefei 230051,China)

机构地区：[1]合肥工业大学汽车与交通工程学院,合肥230009 [2]合肥工业大学智能制造技术研究院,合肥230051

出　　处：《振动与冲击》2024年第23期125-133,共9页Journal of Vibration and Shock

基　　金：安徽省发展改革委发展新能源汽车暨智能网联汽车创新工程项目(IMIZZ2019004)。

摘　　要：为保证汽车行车安全,前舱盖需满足刚度、模态和行人保护等要求。针对汽车前舱盖的轻量化设计需求,建立了铸铝一体化前舱盖有限元模型,分析了前舱盖的刚度、模态和行人保护性能,构建了RBF-Kriging混合近似模型并联合存档微遗传算法(archive based micro genetic algorithm,AMGA)对前舱盖进行多目标优化。针对多目标优化产生的Pareto解集,提出一种基于模糊层次分析-逼近理想解排序(fuzzy analytic hierarchy process-technique for order preference by similarity to ideal solution,FAHP-TOPSIS)法对Pareto非劣解进行综合性能排名,主客观相结合地选择出最优方案。结果表明,在满足性能要求的前提下,最优一体化前舱盖质量降低了32.14%,轻量化效果显著。To ensure the safety of car driving,front engine hood needs to meet requirements of stiffness,modes and pedestrian protection.Here,to meet lightweight design requirements of front engine hood,a finite element model of cast aluminum integrated engine hood was established to analyze its stiffness,modes and pedestrian protection performance.RBF Kriging hybrid approximation model was constructed,it and the archive-based micro genetic algorithm(AMGA)were used to perform multi-objective optimization of integrated engine hood.Aiming at Pareto non-dominated solution set generated by multi-objective optimization,a comprehensive performance ranking method based on fuzzy analytic hierarchy process-technique for order preference by similarity to ideal solution(FAHP-TOPSIS)was proposed,it could combine subjective and objective factors to select the optimal scheme.The results showed that under the premise of meeting performance requirements,the optimal integrated engine hood weight decreases by 32.14%,and the lightweight effect is significant.

关 键 词：一体化前舱盖 熔模铸造 存档微遗传算法(AMGA) 模糊层次分析-逼近理想解排序(FAHP-TOPSIS) Pareto非劣解 轻量化 

分 类 号：U463.82[机械工程—车辆工程]