摘要
当行人与车辆发生碰撞时,汽车前端结构的设计是满足行人腿部保护要求的关键。然而针对SUV车型由于其前端结构特点与普通轿车不同,在应对行人下肢保护要求已呈现明显的局限性。为了提高SUV车型前端结构的行人保护功能,结合试验设计技术、近似建模技术、多目标优化算法,以行人腿部的伤害值指标胫骨加速度及膝部剪切位移最低为优化目标,以膝部弯曲角为设计约束,对车辆前端结构参数进行了多目标优化设计。研究结果表明:优化后的车辆前端结构与原设计相比,有效降低了行人下肢伤害,为车辆前端结构的设计与开发提供了有效的参考。
When the pedestrian and vehicle collision occurs, the structure design of vehicle front-end is vital to fulfill the requirements of pedestrian leg protection. However, there are obvious limitations in SUV cars, for its front-end structure is different from common cars. In order to improve the pedestrian protection performance of front-end structure of SUV cars, it will combine experimental design with the meta-models and the multi-objective optimization algorithm. Minimizing the injuries of tibia acceleration and knee shearing displacement are considered as the objectives and knee bending angle is considered as the design constraint. Multi-objective optimization of vehicle front-end structure parameters is implemented. The optimization design result shows that 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.
出处
《机械设计与制造》
北大核心
2015年第12期94-97,共4页
Machinery Design & Manufacture
关键词
汽车安全
SUV车型
行人保护
汽车前端结构
多目标优化
Automotive Safety
SUV Cars
Pedestrian Protection
Vehicle Front-End Structure
Multi--Objective Optimization
作者简介
惠有利，（1970-），男，辽宁沈阳人，本科，副教授，主要研究方向：汽车综合性能的教学与研究
