Predicting Dynamic Strain Amplification by Coupling a Finite Element Structural Analysis Code with a Gun Interior Ballistic Code

Abstract

The dynamic strain amplification effect caused by a traveling pressure front in a gun tube is examined by coupling a hydrodynamic finite element code, DYNA2D, with an interior ballistic code, IBRGAC. Results are presented comparing the circumferential stress response predictions for a pressure front traveling at constant velocity in a constant cross-section tube with theoretical results. Next, the response due to an accelerating pressure front is examined. Finally, the circumferential stress response due to an M829 projectile fired from an M256 tank cannon is determined using the coupled code.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1991
Accession Number
ADA241551

Entities

People

  • David A. Hopkins

Organizations

  • Ballistic Research Laboratory

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Amplification
  • Ballistics
  • Base Pressure
  • Couplings
  • Dynamic Response
  • Dynamics
  • Geometry
  • Interior Ballistics
  • Internal Pressure
  • Pressurization
  • Projectiles
  • Stress Waves
  • Stresses
  • Structural Analysis
  • Variable Pressure
  • Weapons

Fields of Study

  • Physics

Readers

  • Structural Dynamics.
  • ballistics.