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

doi:10.3901/JME.2016.10.142

Abstract

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

CLC Number:

TG156

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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