基于FAHP-TOPSIS法的一体化前舱盖轻量化设计

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (23) : 125-133.

论文

基于FAHP-TOPSIS法的一体化前舱盖轻量化设计

李书华1,2，贝璟1,2，吴姚烨1,2，蒋泽龙1,2，张代胜1,2

作者信息 +

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

LI Shuhua1,2, BEI Jing1,2, WU Yaoye1,2, JIANG Zelong1,2, ZHANG Daisheng1,2

Author information +

文章历史 +

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。

Abstract

In order to ensure the safety of automobile driving, the hood needs to meet the requirements of stiffness, modal and pedestrian protection. Aiming at the lightweight design requirements of automobile hood, a finite element model of cast aluminum integrated hood was established to analyze the stiffness, modal and pedestrian protection performance of the hood, and a hybrid RBF-Kriging approximation model was constructed and combined with the AMGA algorithm to perform multi-objective optimization of the hood. Aiming at the Pareto solution set generated by multi-objective optimization, a FAHP-TOPSIS method was proposed to comprehensively evaluate the Pareto non-dominated solution set. Pareto non-dominated solutions were ranked in terms of comprehensive performance, and the optimal solution was selected by combining subjectivity and objectivity. The results show that under the premise of meeting the performance requirements, the mass of the optimal integrated hood is reduced by 32.14%, and the lightweighting effect is remarkable.

导出引用

李书华1, 2, 贝璟1, 2, 吴姚烨1, 2, 蒋泽龙1, 2, 张代胜1, 2. 基于FAHP-TOPSIS法的一体化前舱盖轻量化设计[J]. 振动与冲击, 2024, 43(23): 125-133

LI Shuhua1, 2, BEI Jing1, 2, WU Yaoye1, 2, JIANG Zelong1, 2, ZHANG Daisheng1, 2. Lightweight design of integrated engine hood based on FAHP-TOPSIS method[J]. Journal of Vibration and Shock, 2024, 43(23): 125-133

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