基于组合近似模型的可靠性优化方法在行人柔性腿型碰撞中应用研究

doi:10.3901/JME.2016.10.142

机械工程学报 ›› 2016, Vol. 52 ›› Issue (10): 142-149.doi: 10.3901/JME.2016.10.142

基于组合近似模型的可靠性优化方法在行人柔性腿型碰撞中应用研究

吕晓江^{1, 2}, 谷先广^{2, 3}, 王国荣¹, 周大永¹, 刘卫国¹

1. 浙江吉利汽车研究院有限公司浙江省汽车安全技术研究重点实验室杭州 311228;
2．湖南大学汽车车身先进设计制造国家重点实验室长沙 410082;
3. 合肥工业大学机械与汽车工程学院合肥 230009

出版日期:2016-05-15 发布日期:2016-05-15
作者简介:吕晓江,男,1982年出生,工程师。主要研究方向为汽车结构耐撞性及行人保护。E-mail：lvxiaojiang@geely.com;谷先广(通信作者),男,1981年出生,博士,讲师,硕士研究生导师。主要研究方向为汽车轻量化设计及优化算法。E-mail：gxghfut@163.com
基金资助:
国家自然科学基金(51405123)、汽车车身先进设计制造国家重点实验室开放基金(31415009,31525008)和浙江省汽车安全技术研究重点实验室开放基金(2009E10013)资助项目

Reliability Optimization on Pedestrian Flexible Legform Impact Based on Ensemble of Metamodel

LÜ Xiaojiang^{1, 2}, GU Xianguang^{2, 3}, WANG Guorong¹, ZHOU Dayong¹, LIU Weiguo¹

1. Zhejiang Key Laboratory of Automobile Safety Technology, Geely Automobile Research Institute, Hangzhou 311228;
2. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082;
3. School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei 230009

Online:2016-05-15 Published:2016-05-15

摘要/Abstract

摘要： 当行人与车辆发生碰撞时,车身最前端的部件将直接与行人下肢腿部发生接触,其设计是满足行人下肢保护要求的关键。然而针对传统要求的基于刚性腿型行人保护车辆前结构设计方法,在应对柔性腿型行人保护要求已呈现明显的局限性。为了提高保险杠结构的柔性腿型保护功能,结合试验设计技术、组合近似建模技术、多目标优化算法和可靠性分析方法,以行人腿部的伤害值最低为优化目标,对车辆前端结构参数进行可靠性优化设计并对优化结果进行试验验证。研究结果表明：优化后的车辆前端结构与原设计相比,行人柔性腿型保护功能得到明显提高,为车辆前端结构的设计与开发提供有效的参考。

关键词: 可靠性优化, 柔性腿型, 行人保护, 组合近似模型

Abstract: When the pedestrian and vehicle collision occurs, the vehicle front-end structure which has direct contact with the pedestrian lower leg, it is designed to meet the critical requirements of pedestrian lower leg protection. However, there are obvious limitations in dealing with the vehicle front-end structure design to meet the flexible pedestrian legform impactor (Flex-PLI) pedestrian protection according to the requirements of transport research laboratory pedestrian legform impactor (TRL-PLI). To improve the performance of TRL-PLI pedestrian protection, the research will adopt to combine with experimental design, the ensemble of metamodels, the multiobjective optimization algorithm and reliable analysis methods, with minimizing the injuries of lower leg as the objectives, and optimize vehicle front-end structure parameters. The optimization design result is validated by test. Compared with the original design, pedestrian leg protection performance is significantly improved, which provides a reference for the design and development of the vehicle front-end structure.

Key words: ensemble of metamodel, flexible pedestrian legform impactor, pedestrian protection, reliability optimization

中图分类号:

TG156

吕晓江, 谷先广, 王国荣, 周大永, 刘卫国. 基于组合近似模型的可靠性优化方法在行人柔性腿型碰撞中应用研究[J]. 机械工程学报, 2016, 52(10): 142-149.

LÜ Xiaojiang, GU Xianguang, WANG Guorong, ZHOU Dayong, LIU Weiguo. Reliability Optimization on Pedestrian Flexible Legform Impact Based on Ensemble of Metamodel[J]. Journal of Mechanical Engineering, 2016, 52(10): 142-149.

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基于组合近似模型的可靠性优化方法在行人柔性腿型碰撞中应用研究

Reliability Optimization on Pedestrian Flexible Legform Impact Based on Ensemble of Metamodel

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