A Finite-Element Model Analysis of the Protection Provided by Army Aviator Helmets to the Human Head and Neck

Abstract

This report documents the results of a study aimed at obtaining the spatial and temporal distribution of loads on the headform as a result of a crown impact to Army aviator helmets using a classic headform-helmet drop test. In the actual drop test, only 2 measurements were made: the impact force time history between the helmet shell and a rigid surface and the acceleration time history of the center of gravity (C.G.) of the magnesium headform. A mathematical model of the drop test was developed using a flexible body extension to DADS, a general-purpose nonlinear dynamic analysis program previously completed at the University of Iowa.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1983
Accession Number
ADA163182

Entities

People

  • Glen O. Njus
  • Robert L. Benedict
  • Sachio Nakamura
  • Y. K. Liu

Organizations

  • United States Army Aeromedical Research Lab

Tags

Communities of Interest

  • Air Platforms
  • Biomedical

DTIC Thesaurus Topics

  • Center Of Gravity
  • Composite Materials
  • Coordinate Systems
  • Drop Tests
  • Dynamic Tests
  • Equations
  • Geometric Forms
  • Geometry
  • High Pressure
  • Materials
  • Materials Testing
  • Measurement
  • Modulus Of Elasticity
  • Moment Of Inertia
  • Pressure Distribution
  • Three Dimensional
  • Transducers

Readers

  • Computational Modeling and Simulation
  • Explosive Engineering.
  • Military Engineering.