华侨大学学报（自然科学版）Issue(3)：241-246,6.DOI:10.11830/ISSN.1000-5013.2015.03.0241
基于梯度强度立柱的客车侧翻安全性多目标优化设计
Multi-Obj ective Optimization Design for Bus Rollover Safety Based on Gradient Strength Pillar
摘要
Abstract
In order to make the strength of the pillar in different locations match with the impacting force,a new gradient strength pillar structure is proposed in this paper.The rollover simulation analysis for gradient pillar shows that the gra-dient strength pillar structure obviously improves rollover safety of the bus.The paper establishes high precision approxi-mate models of design response by combining optimal latin hypercube experimental design with radial basis function (RBF)approximation techniques,and multi-objective optimization design is performed based on approximate models of design responses by using the multi-obj ective genetic algorithm (NSGA-Ⅱ).The optimization results show that a reason-able match of strength and wall thickness for the pillar structure,not only can improve bus rollover security greatly,but also can achieve the purpose of bus lightweight design.关键词
客车/梯度强度/立柱/多目标优化/侧翻安全性Key words
bus/gradient strength/pillar/multi-obj ective optimization/rollover safety分类
交通工程引用本文复制引用
周莎,张勇,张成,李奇..基于梯度强度立柱的客车侧翻安全性多目标优化设计[J].华侨大学学报（自然科学版）,2015,(3):241-246,6.基金项目
国家自然科学基金资助项目（51205141）；中国博士后科学基金资助项目（2014T70613）；华侨大学中青年教师科技创新支持计划资助项目 （）
