Stress Concentration at Inclined Crossbore Holes in Pressurized, Autofrettaged Tubes

Abstract

A sequence of analytic, elastic superpositions is employed to obtain a single equation for determining the maximum stress at the bore of a pressurized thick cylinder intersected by an inclined, circular crossbore hole whose axis intersects that of the cylinder. The crossbore hole may contain a pressure that differs from that in the bore, a situation that pertains in some gun tubes during firing. The formulation permits the modeling of any plane (constant strain) end condition,including zero strain, open-ends and closed-ends. The crossbore hole may itself have an additional stress concentrator on its boundary; such concentrators may result from erosion, corrosion or manufacturing defects. Finally, preexisting residual stresses, prior to introduction of the crossbore hole, may also be incorporated. The single equation presented applies to the crossbore-bore intersection.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2012
Accession Number
ADA590388

Entities

People

  • Anthony P. Parker
  • Edward Troiano

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Availability
  • Biaxial Stresses
  • Boundaries
  • Classification
  • Contracts
  • Corrosion
  • Eccentricity
  • Equations
  • Information Operations
  • Internal Pressure
  • Manufacturing
  • Residual Stress
  • Residuals
  • Sequences
  • Stress Concentration
  • Stresses

Readers

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