Dynamic Fracture of Composite Gun Tubes

Abstract

The fracture behavior of a composite cylinder subjected to a moving pressure has been investigated. The resonance of stress waves can result in very high amplitude of strains in the cylinder at the instant and location of pressure front passage when the velocity of the moving pressure approaches a critical velocity. The stress wave with high magnitude, while short in duration, might not cause structural failure immediately; however, it could accelerate the propagation in the cylinder with initial imperfection and shorten fatigue life of the cylinders. The fracture mechanism induced by dynamic amplification effects is especially critical for composite-overwrapped cylinders because of the multimaterial and anisotropic construction, thermal degradation in material properties, and a design goal that is inherent in lightweight gun barrel applications.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1999
Accession Number
ADA360721

Entities

People

  • Jerome T. Tzeng

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Construction
  • Crack Tips
  • Dynamic Response
  • Equations
  • Finite Element Analysis
  • Geometry
  • Guns
  • Internal Pressure
  • Laminates
  • Materials
  • Materials Processing
  • Mechanical Engineering
  • Mechanical Working
  • Mechanics
  • Stress Waves
  • Stresses

Readers

  • Marksmanship and Weaponry.
  • Materials Science (Mechanical Engineering).
  • Structural Dynamics.