Analysis of Rigid Polyurethane Foam as a Shock Mitigator

Abstract

In problems of water impact, the compressive stress wave generated in a weapon vehicle at the surface of contact can be quite severe. The purpose of this report is to investigate the mitigation of shock and absorption of energy under impact-loading conditions through the use of crushable materials. Experimental data are presented on the mitigated impacts of a short steel projectile on a long aluminum rod. A theoretical analysis is formulated and the results are compared with the experimental results. Mitigators of varying cross-sectional area, as well as mitigators of constant cross-sectional area, are included. The dynamic properties of the rigid polyurethane foam were obtained experimentally and from the literature and used as input for the theoretical analysis. (Modified author abstract)

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Document Details

Document Type
Technical Report
Publication Date
Aug 06, 1973
Accession Number
AD0772484

Entities

People

  • Joy C. Yang
  • William M. Hinckley

Organizations

  • Naval Ordnance Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Computer Programs
  • Elastic Waves
  • Experimental Data
  • Films
  • Materials
  • Mechanical Properties
  • Modulus Of Elasticity
  • Munitions
  • Ordnance Laboratories
  • Polyurethanes
  • Projectiles
  • Stress Strain Relations
  • Stress Waves
  • Stresses
  • Waves
  • Weapons
  • Yield Strength

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Explosive Engineering.
  • Structural Dynamics.