Journal of South China University of Technology (Natural Science Edition) ›› 2019, Vol. 47 ›› Issue (12): 38-42,61.doi: 10.12141/j.issn.1000-565X.180576

• Mechanical Engineering • Previous Articles     Next Articles

Pedestrian Head Protection Performance Simulation of Chiral Honeycomb Sandwich Conceptual Engine Hood

YANG Shu JIANG Feng DING Hongfei YU Chen QI Chang   

  1. School of Automotive Engineering，Dalian University of Technology，Dalian 116024，Liaoning，China
  • Received:2018-11-21 Revised:2019-07-05 Online:2019-12-25 Published:2019-11-02
  • Contact: 亓昌(1978-)，男，教授，博士生导师，主要从事汽车安全与轻量化研究． E-mail:qichang@dlut.edu.cn
  • About author:杨姝(1978-)，女，副教授，主要从事汽车安全与轻量化研究． E-mail:yangshu@dlut．edu．cn
  • Supported by:
    Supported by the National Natural Science Foundation of China( 51475069，51475070)

PDF

111

Abstract: A conceptual design of energy-absorbing sandwich engine hood with tetra-chiral honeycomb core was proposed to reduce pedestrian head injury in car accidents． Finite element models of the headform impactor，the tetra-chiral honeycomb and the traditional hexagonal honeycomb sandwich energy-absorbing engine hoods were con- structed． The performances of the two types of hoods for pedestrian head protection were simulated and compared． The results show that，compared with hexagonal honeycomb，the tetra-chiral honeycomb sandwich engine hood can reduce the head collision injury more effectively． The tetra-chiral honeycomb core energy-absorbing sandwich en- gine hood can provide reference for new energy-absorbing engine hood design for pedestrian head protection in car accidents．

Key words: automobile safety, pedestrian protection, chiral honeycomb, engine hood, negative Poisson's ratio

CLC Number: