Impact Behavior of Low Strength Projectiles

Abstract

An unsteady, hydrodynamic model of the impact of a low strength projectile on a rigid or semi-rigid target has been developed. Impact tests of various materials including birds, gelatin, and RTV rubber have been conducted to validate this theory. At velocities above 100 m/s, these materials were seen to flow as a fluid upon impact. The resulting impact pressure histories were very similar to those predicted using the model. The impact process was dominated by an initial shock phase which was quickly followed by a release to a steady flow condition. This model should be applicable to the impact of any material for which the shock pressures generated during impact are much greater than the strength of the projectile but are less than the strength of the target. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1978
Accession Number
ADA060423

Entities

People

  • James S. Wilbeck

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Computational Fluid Dynamics
  • Elastic Waves
  • Equations Of State
  • Fluid Dynamics
  • Fluid Flow
  • Geometry
  • High Pressure
  • Materials
  • Materials Laboratories
  • Measurement
  • Mechanics
  • Porous Materials
  • Pressure Distribution
  • Pressure Measurement
  • Steady Flow
  • Strain Gages
  • Stress Waves

Readers

  • Explosive Engineering.
  • Fluid Dynamics.
  • Polymer Science and Engineering.