Optimization of the Thermal Tensioning Process for Minimum Residual Stress and Distortion

P. Michaleris, J. Dantzig, D. Tortorelli

Research output: Contribution to conferencePaper

Abstract

Welding distortion in thin section large structures is usually caused by buckling due to the residual stress. In cases here the design is fixed and minimum weld size requirements are in place, the thermal tensioning process can be used to reduce the welding residual stress bellow the critical level and eliminate buckling distortion. In this work, a systematic design approach using conventional finite element analysis, analytic sensitivity analysis, and numerical optimization is implemented to investigate and optimize the thermal tensioning process. We clearly demonstrate that: 1) thermal tensioning with localized heating produces welds with negligible residual stress at the critical locations. Such panels will have no buckling distortion. 2) The systematic approach is very robust and cost effective.

Original languageEnglish (US)
Pages988-992
Number of pages5
StatePublished - Dec 1 1998
EventTrends in Welding Research: Proceedings of the 5th International Conference - Pine Mountain, GA, United States
Duration: Jun 1 1998Jun 5 1998

Other

OtherTrends in Welding Research: Proceedings of the 5th International Conference
CountryUnited States
CityPine Mountain, GA
Period6/1/986/5/98

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanical Engineering

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    Michaleris, P., Dantzig, J., & Tortorelli, D. (1998). Optimization of the Thermal Tensioning Process for Minimum Residual Stress and Distortion. 988-992. Paper presented at Trends in Welding Research: Proceedings of the 5th International Conference, Pine Mountain, GA, United States.