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Thermal Stress Analysis of Welds : From Melting Point to Room Temperature

  • Goldak J.
    Department of Mechanical and Aerospace Engineering, Carleton University
  • Zhou J.
    Department of Mechanical and Aerospace Engineering, Carleton University
  • Breiguine V.
    Department of Mechanical and Aerospace Engineering, Carleton University
  • Montoya F.
    Department of Mechanical and Aerospace Engineering, Carleton University

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Abstract

To compute stress, residual stress and distortion in welded structures, It is desirable that a stress analysis cover the entire temperature range from the melting point to room temperature. This paper presents a methodology that switches constitutive equations from rate independent or elasto-plasticity at temperatures below 0.5 of the melting point ; to rate dependent or elasto-viscoplasticity for temperatures from 0.5 to 0.8 of the melting point and to linear viscoplastic model for temperatures from 0.8 of the melting point to the melting point and above. The issues in switching constitutive equations and transforming intenal variables from one constitutive equation to another are discussed. Numerical results for the thermal stress analysis of a weld are presented to demonstrate the performance of the methodology.

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Details

  • CRID
    1571135652278851328
  • NII Article ID
    110006485964
  • NII Book ID
    AA00867058
  • ISSN
    03874508
  • Text Lang
    en
  • Data Source
    • CiNii Articles

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