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所属单位：能源与动力学院

发表刊物：PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE

关键字：Bumper negative Poisson's ratio pedestrian lower-leg protection reliability optimization energy-absorbing forepart

摘要：The bumper system always directly causes the injury of the pedestrian leg in the car-pedestrian accidents. Therefore, it is of practical significance to optimize the bumper structure to enhance the protective effect of the pedestrian leg. Based on the original bumper system, this work proposes a novel negative Poisson's ratio energy-absorbing forepart with inner hexagonal cellular structure, which is designed at the lower leg impact zone between the bumper beam and the cover. The parametric model of the negative Poisson's ratio forepart, the lower legform impactor model, and the car-pedestrian collision model are firstly established. Then, through integrating the response surface method, second-order reliability method, and archive-based micro genetic algorithm, a reliability optimization design is further conducted for the negative Poisson's ratio forepart based on the deterministic optimization results. Simulation results show that the optimized negative Poisson's ratio forepart not only can significantly enhance the reliability and robustness, but also improve the protective effect of the pedestrian leg.

ISSN号：0954-4062

是否译文：否

发表时间：2018-09-01

合写作者：Wang, Wei-Wei,赵万忠,李玉芳,周光明

通讯作者：王春燕