Effects of Temperature Distribution and Elastic Properties of Materials on Gas-Turbine-Disk Stresses

Abstract

Severe temperature gradients caused thermal stresses of sufficient magnitude to reduce the operating safety of the turbine disk. Small temperature gradients were desirable because they created thermal stresses that subtracted from the centrifugal stresses in the region of the rim. Investigation of elastic material properties showed that centrifugal stresses are slightly affected by changes in modulus of elasticity; but that thermal stresses are approximately proportional to modulus of elasticity and to coefficient of thermal expansion.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1947
Accession Number
ADA801367

Entities

People

  • Arthur G. Holms
  • Richard D. Faldetta

Organizations

  • Glenn Research Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Coefficients
  • Elastic Materials
  • Elastic Properties
  • Equations
  • Gas Turbine Rotors
  • Gas Turbines
  • High Temperature
  • Margin Of Safety
  • Materials
  • Modulus Of Elasticity
  • Rotors
  • Stresses
  • Temperature Gradients
  • Tensile Stress
  • Thermal Expansion
  • Thermal Stresses
  • Turbine Wheels

Readers

  • Electrical Engineering
  • Mechanical Engineering/Mechanics of Materials.
  • Thermal Physics or Thermal Science.