Use of a Mathematical Model for the Evaluation of Head Injury Criteria

Abstract

The present study concerns the use of an analytic model for closed brain injury to evaluate General Motors' Severity Index for head injury. This index, which considers the relative importance of the duration and intensity of the pulse by means of an impulse-integration procedure, has been demonstrated empirically to be an excellent means of comparing the severity of pulses of varying shapes. Four pulses (square, half-sine, skewed and triangular), each having the same Severity Index but different magnitudes, were employed as inputs to the model. The model response to each of the four impacts was determined. Graphs of the time variation of stresses in the shell and pressures in the fluid at both the impact pole and at the counter pole demonstrate excellent correlation between model response and Severity Index, independent of the shape and magnitude of the impact force.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1971
Accession Number
AD0740441

Entities

People

  • James V. Benedict

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Biological Sciences
  • Biomedical Research
  • Cartesian Coordinates
  • Coordinate Systems
  • Displacement
  • Head Injuries
  • Intensity
  • Mathematical Models
  • Models
  • Skull
  • Spatial Distribution
  • Stress Waves
  • Stresses
  • Tensile Stress
  • Tissues
  • Waveforms
  • Waves

Readers

  • Computational Modeling and Simulation
  • Explosive Engineering.
  • Neurotrauma and Rehabilitation Medicine.