Optimized Inner Boundary Shapes in Circular Rings under Diametral Compression,

Abstract

Using a method developed by the authors, the configuration of the inside boundary of circular rings, subjected to diametral compression, has been optimized, keeping cleared the space enclosed by the original circular inside boundary. The range of diameters studied was 0.33 < ID/OD < 0.7. In comparison with circular rings of the same ID/OD, the stress concentrations have been reduced by about 30%, the weight has been reduced by about 10% and coefficients of efficiency of about 0.96 have been attained. The maximum values of compressive and tensile stresses on the edge of the hole, and sharp corners exhibit zero stress. The geometries for each ID/OD design are given in detail. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1979
Accession Number
ADA070000

Entities

People

  • Augusto J. Durelli
  • K. Rajaiah

Organizations

  • Oakland University

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Civil Engineering
  • Coefficients
  • Compression
  • Continuum Mechanics
  • Efficiency
  • Geometry
  • Materials
  • Mechanics
  • Military Research
  • Propellant Grains
  • Shape
  • Solid Propellants
  • Stress Concentration
  • Stresses
  • Tensile Stress
  • Three Dimensional
  • Two Dimensional

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Materials Science (Mechanical Engineering).
  • Reinforced Composite Materials

Technology Areas

  • Space
  • Space - Orbital Debris