Multi-Objective Optimization Design of Hybrid Material Bumper for Pedestrian Protection and Crashworthiness Design

2020-01-0201

04/14/2020

Features
Event
WCX SAE World Congress Experience
Authors Abstract
Content
In vehicle accident, the bumper beam generally requires high stiffness for sufficient survival space for occupants while it may cause serious pedestrian lower extremity injuries. The aim of this study is to promote an aluminum-steel hybrid material double-hat bumper to meet the comprehensive requirements. The hybrid bumper is designed to improve the frontal crash and pedestrian protection performances in collision accidents. Finite element (FE) models of the hybrid bumper was built, validated, and integrated into an automotive model. The Fixed Deformable Barrier (FDB) and Transport Research Laboratory (TRL) legform model were used to obtain the vehicle crashworthiness and pedestrian lower leg injury indicators. Numerical results showed that the hybrid bumper had a great potential for crashworthiness performance and pedestrian protection characteristics. Based on this, a multi-objective optimization design (MOD) was performed to search the optimal geometric parameters. The MOD results showed that the comprehensive performance of the hybrid bumper had been effectively improved and the optimized design exhibited excellent characteristics in frontal crashworthiness and pedestrian protection in vehicle collision accidents.
Meta TagsDetails
DOI
https://doi.org/10.4271/2020-01-0201
Pages
8
Citation
Qi, C., Sun, Y., Yang, S., and Lu, Z., "Multi-Objective Optimization Design of Hybrid Material Bumper for Pedestrian Protection and Crashworthiness Design," SAE Technical Paper 2020-01-0201, 2020, https://doi.org/10.4271/2020-01-0201.
Additional Details
Publisher
Published
Apr 14, 2020
Product Code
2020-01-0201
Content Type
Technical Paper
Language
English