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Parametric equations for T-butt weld toe stress intensity factors

Journal Article


Abstract


  • This paper describes the generation of parametric equations for weld toe stress intensity factors. The methodology employed used a two-dimensional finite element analysis to evaluate the `crack opening' stress distribution in the uncracked plane of T-butt geometries. This was then used as input into a dedicated weight function solution for the determination of stress intensity factors. The final parametric equations describe the stress intensity factor distributions for tension and bending as a function of plate thickness, weld attachment width, weld angle, weld root radius, crack length and crack shape. The equations are compared and validated against a wide spectrum of published values and appear by comparison accurate and wide ranging. The validation exercise uncovered situations where present design guidance is unconservative.

Publication Date


  • 1999

Citation


  • Brennan, F. P., Dover, W. D., KarĂ©, R. F., & Hellier, A. K. (1999). Parametric equations for T-butt weld toe stress intensity factors. International Journal of Fatigue, 21(10), 1051-1062. doi:10.1016/S0142-1123(99)00090-0

Scopus Eid


  • 2-s2.0-0033316799

Start Page


  • 1051

End Page


  • 1062

Volume


  • 21

Issue


  • 10

Abstract


  • This paper describes the generation of parametric equations for weld toe stress intensity factors. The methodology employed used a two-dimensional finite element analysis to evaluate the `crack opening' stress distribution in the uncracked plane of T-butt geometries. This was then used as input into a dedicated weight function solution for the determination of stress intensity factors. The final parametric equations describe the stress intensity factor distributions for tension and bending as a function of plate thickness, weld attachment width, weld angle, weld root radius, crack length and crack shape. The equations are compared and validated against a wide spectrum of published values and appear by comparison accurate and wide ranging. The validation exercise uncovered situations where present design guidance is unconservative.

Publication Date


  • 1999

Citation


  • Brennan, F. P., Dover, W. D., KarĂ©, R. F., & Hellier, A. K. (1999). Parametric equations for T-butt weld toe stress intensity factors. International Journal of Fatigue, 21(10), 1051-1062. doi:10.1016/S0142-1123(99)00090-0

Scopus Eid


  • 2-s2.0-0033316799

Start Page


  • 1051

End Page


  • 1062

Volume


  • 21

Issue


  • 10