A Mechanical Impedance Model for Head Injury Due to Linear Impacts

Abstract

The mechanical impedance of the human and various other primate species heads was determined over the frequency 30-5000 hertz. A simple model was developed that closely follows the observed impedance characteristics. Spring and damping constants were evaluated and comparisons between species obtained. An impact tolerance curve was computed based on the model predictions with a maximum strain criteria. Various input pulse shapes were analyzed and the effect of pulse shape and duration studied for the different species. Published values of tolerable impulses were examined and compared with the model predictions.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1971
Accession Number
AD0740474

Entities

People

  • James H. Mcelhaney
  • Richard L. Stalnaker
  • Verne L. Roberts

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Biomedical

DTIC Thesaurus Topics

  • Air Force
  • Animals
  • Automobiles
  • Differential Equations
  • Dynamic Response
  • Equations
  • Frequency
  • Head Injuries
  • Health Services
  • Linear Differential Equations
  • Mechanical Impedance
  • Medical Personnel
  • Motor Vehicles
  • Skull
  • Survival
  • Vehicles
  • Vibration

Readers

  • Control Systems Engineering.
  • Marine Hydrodynamics
  • Toxicology/Environmental Toxicology