Investigation of Anteroposterior Head-Neck Responses during Severe Frontal Impacts Using a Brain-Spinal Cord Complex FE Model

Central nervous system (CNS) injuries in automotive accidents are generally categorized into severe injuries (AIS 3+). How restraint conditions affect the CNS injuries is not clear. To investigate the biomechanical responses of the brain-spinal cord complex, this paper presents a newly developed three-dimensional (3D) finite element (FE) head-neck model. The head model consists of the scalp, skull, and a detailed description of the brain. The neck model consists of a detailed description of the neck. The two models were linked together to construct an FE model of the brain-spinal cord complex. The material stiffness and failure properties of porcine cervical pia mater were measured from uniaxial tensile tests with various strain rates at Yamaguchi University. The head-neck model was validated against three sets of brain test data and two sets of neck test data. Additionally, a series of parametric studies was conducted to investigate the effects of restraint conditions on CNS injuries. The injury criteria for brain injuries were based on Cumulative Strain Damage Measure, while those for spinal cord injuries were based on the ultimate strains of the spinal cord and pia mater. It was found that the brain-spinal cord model was useful to investigate the relationship between the restraint conditions and CNS injuries.

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  • Authors:
    • Kimpara, Hideyuki
    • Nakahira, Yuko
    • Iwamoto, Masami
    • Miki, Kazuo
    • Ichihara, Kazuhiko
    • Kawano, Shun-ichi
    • Taguchi, Toshihiko
  • Conference:
  • Publication Date: 2006-11

Language

  • English

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Filing Info

  • Accession Number: 01046250
  • Record Type: Publication
  • ISBN: 139780768018295
  • Files: TRIS
  • Created Date: Apr 19 2007 9:38AM