Journal of South China University of Technology(Natural Science) >

2019 , Vol. 47 >Issue 12: 38 - 42,61

DOI: https://doi.org/10.12141/j.issn.1000-565X.180576

Mechanical Engineering

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

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  • School of Automotive Engineering，Dalian University of Technology，Dalian 116024，Liaoning，China
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

Received date: 2018-11-21

  Revised date: 2019-07-05

  Online published: 2019-11-02

Supported by

Supported by the National Natural Science Foundation of China( 51475069，51475070)

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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

Cite this article

YANG Shu, JIANG Feng, DING Hongfei, et al . Pedestrian Head Protection Performance Simulation of Chiral Honeycomb Sandwich Conceptual Engine Hood[J]. Journal of South China University of Technology(Natural Science), 2019 , 47(12) : 38 -42,61 . DOI: 10.12141/j.issn.1000-565X.180576

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