Strain-Rate Equations for Calculation of Secondary Creep Deformation of Thick-Walled Tubes with Internal or External Pressure.

Abstract

Tubular structures such as heat exchangers and fuel-pin cladding may be operated at temperatures and stress levels such that creep occurs during normal operation for long lifetimes. Equations are presented relating the strain rate for secondary creep in thick-walled tubes at constant temperature with static internal pressure. Stress equations and strain-rate equations are given for the compressive secondary creep of thick-walled tubes at constant temperature with constant external pressure. The equations given are applicable in designing tubes undergoing secondary creep for long lifetimes with limited deformation.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1971
Accession Number
ADA309584

Entities

People

  • Richard E. Morris

Organizations

  • Glenn Research Center

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Creep
  • Equations
  • Fuels
  • Heat Exchangers
  • Heat Transfer
  • High Temperature
  • Internal Pressure
  • Materials
  • Nuclear Propulsion
  • Nuclear Reactors
  • Propulsion Systems
  • Reactor Fuels
  • Strain Rate
  • Stress Analysis
  • Stresses
  • Tubular Structures

Readers

  • Mechanical Engineering/Mechanics of Materials.