Numerical Prediction of Residual Stresses in an Overloaded Breech Ring

Abstract

This report describes a numerical technique for predicting the residual stresses in an overloaded breech ring. The numerical approach used is the finite element method based on the incremental stress-strain matrix, for which a computer program is developed. The material behavior is characterized by the von Mises' yield criterion, Prandtl-Reuss flow equations and isotropic hardening rule. A piecewise linear representation for the stress-strain curve is used. The numerical results of the stresses in all elements are obtained for four contact conditions. The location and magnitude of the maximum fillet stress are determined as a function of loading. Residual stresses resulting from elastic unloading are calculated. A satisfactory agreement between numerical and experimental results has been reached.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1980
Accession Number
ADA093505

Entities

People

  • P. T. Chen

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Agreements
  • Computer Programs
  • Computers
  • Fatigue Life
  • Finite Element Analysis
  • Load Distribution
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Numerical Analysis
  • Residual Stress
  • Stress Concentration
  • Stress Strain Relations
  • Stresses
  • Tensile Stress
  • Weapons
  • Yield Strength

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Structural Dynamics.