UN-STATIONARY THERMOELASTIC PLASTIC ANALYSIS BY FINITE ELEMENT METHOD AND ITS APPLICATION TO WELDING

With recent progress in the analytical technique of the non-linear material problem by the finite element method, it has now become possible to analyze stress and strain in the immediate vicinity of the welded joints. Experimental measurements of stress and strain at the weld and the surrounding base metal are impossible due to the high temperature caused by the welding heat source. When structural members become deformed beyond their proportional limits, due to an un-stationary temperature change or external load, it is required to apply the incremental theory of plasticity for accurate analysis of stress and strain. The authors, employing the initial strain increment theory that is a combination of incremental theory and the initial strain method, have developed a computer program for thermoelastic plastic plane stress analysis through the finite element method, which includes consideration of the temperature dependence of material properties. This program is useful in the analysis of transient welding deformation, residual stress and various other thermal stress problems.

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  • Corporate Authors:

    Ishikawajima-Harima Heavy Industries Co., Ltd.

    2-16, Toyosu 3 Chome, Koto-Ku
    Tokyo 135,   Japan 
  • Authors:
    • Kamichika, R
    • Yada, T
  • Publication Date: 1975-1

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Filing Info

  • Accession Number: 00095351
  • Record Type: Publication
  • Source Agency: Ishikawajima-Harima Heavy Industries Co., Ltd.
  • Files: TRIS
  • Created Date: May 29 1975 12:00AM