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Related Experiment Videos

Human head dynamic response to side impact by finite element modeling.

J S Ruan1, T Khalil, A I King

  • 1Bioengineering Center, Wayne State University, Detroit, Michigan 48202.

Journal of Biomechanical Engineering
|August 1, 1991
PubMed
Summary

Finite element models simulated human head side impacts, revealing how skull, brain, and membrane properties affect dynamic responses and pressure distribution. This research aids in understanding head injury biomechanics.

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Area of Science:

  • Biomechanics
  • Computational Mechanics
  • Human Head Injury

Background:

  • Understanding the human head's dynamic response to impact is crucial for injury prevention.
  • Previous studies often simplified head anatomy and material properties in simulations.
  • The role of internal membranes in head impact response requires further investigation.

Purpose of the Study:

  • To investigate the dynamic response of the human head to side impact using 2D finite element modeling.
  • To determine the effects of membranes and material properties on brain's dynamic response.
  • To compare pressure distributions between axisymmetric and plane strain models.

Main Methods:

  • Developed three 2D finite element models: axisymmetric (Model I) and two plane strain models (Model II and III) of a coronal head section.

Related Experiment Videos

  • Model II simulated bone and inviscid fluid; Model III incorporated detailed internal structures like cerebrospinal fluid (CSF), falx cerebri, dura, and tentorium.
  • Applied a triangular pressure pulse (40 kPa peak) to simulate side impact, using linear elastic material properties for all components.

    • Main Results:

    • Parametric study on Model II characterized head response under various impact conditions.
    • Comparison of pressure distributions between axisymmetric and plane strain models was performed.
    • The study analyzed the influence of membranes and mechanical properties on the brain's dynamic response.

    Conclusions:

    • Finite element modeling provides valuable insights into the biomechanics of human head side impacts.
    • Internal head structures and material properties significantly influence the dynamic response.
    • This research contributes to a better understanding of head injury mechanisms.