Finite element analysis of the effect of motorcycle helmet materials against impact velocity

Li Tung Chang, Guan Liang Chang, Ji Zhen Huang, Shyh Chour Huang, De Shin Liu, Chih-Han Chang

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A motorcycle helmet is the best protective headgear for the prevention of head injuries caused by direct cranial impact. A finite element model based on realistic geometric features of a motorcycle helmet is established, and explicit finite element LS-DYNA code is employed to simulate dynamic responses at different impact velocities. Peak acceleration and Head Injury Criterion values derived from the headform are used to assess the protective performance of the helmet. We have concluded that the dynamic responses of the helmet dramatically vary with impact velocity, as well as the mechanical properties of the outer shell and energy-absorbing liner. At low velocities, e.g., less than 8.3 m/s, the shell stiffness and liner density should be relatively low to diminish head-contact force. At high velocity, e.g., 11.1 m/s, a stiffer shell and denser liner offer superior protection against head injuries.

Original languageEnglish
Pages (from-to)835-843
Number of pages9
JournalJournal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A/Chung-kuo Kung Ch'eng Hsuch K'an
Volume26
Issue number6
DOIs
Publication statusPublished - 2003 Jan 1

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Motorcycles
Finite element method
Dynamic response
Stiffness
Mechanical properties

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

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title = "Finite element analysis of the effect of motorcycle helmet materials against impact velocity",
abstract = "A motorcycle helmet is the best protective headgear for the prevention of head injuries caused by direct cranial impact. A finite element model based on realistic geometric features of a motorcycle helmet is established, and explicit finite element LS-DYNA code is employed to simulate dynamic responses at different impact velocities. Peak acceleration and Head Injury Criterion values derived from the headform are used to assess the protective performance of the helmet. We have concluded that the dynamic responses of the helmet dramatically vary with impact velocity, as well as the mechanical properties of the outer shell and energy-absorbing liner. At low velocities, e.g., less than 8.3 m/s, the shell stiffness and liner density should be relatively low to diminish head-contact force. At high velocity, e.g., 11.1 m/s, a stiffer shell and denser liner offer superior protection against head injuries.",
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Finite element analysis of the effect of motorcycle helmet materials against impact velocity. / Chang, Li Tung; Chang, Guan Liang; Huang, Ji Zhen; Huang, Shyh Chour; Liu, De Shin; Chang, Chih-Han.

In: Journal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A/Chung-kuo Kung Ch'eng Hsuch K'an, Vol. 26, No. 6, 01.01.2003, p. 835-843.

Research output: Contribution to journalArticle

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AU - Chang, Li Tung

AU - Chang, Guan Liang

AU - Huang, Ji Zhen

AU - Huang, Shyh Chour

AU - Liu, De Shin

AU - Chang, Chih-Han

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