Parametric equations for T-butt weld toe stress intensity factors

F.P. Brennan, W.D. Dover, R.F. Karé, A.K. Hellier

Research output: Contribution to journalArticle

20 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)1051-1062
Number of pages12
JournalInternational Journal of Fatigue
Volume21
Issue number10
DOIs
Publication statusPublished - 30 Nov 1999

Fingerprint

Parametric equations
Stress Intensity Factor
Stress intensity factors
Crack
Welds
Cracks
Stress Distribution
Weight Function
Exercise
Guidance
Radius
Roots
Finite Element
Stress concentration
Angle
Methodology
Evaluate
Finite element method
Geometry

Keywords

  • T-butt
  • weld toe
  • crack
  • stress intensity factor
  • weight function
  • parametric equation
  • fatigue life
  • engineering design

Cite this

Brennan, F.P. ; Dover, W.D. ; Karé, R.F. ; Hellier, A.K. / Parametric equations for T-butt weld toe stress intensity factors. In: International Journal of Fatigue. 1999 ; Vol. 21, No. 10. pp. 1051-1062.
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Parametric equations for T-butt weld toe stress intensity factors. / Brennan, F.P.; Dover, W.D.; Karé, R.F.; Hellier, A.K.

In: International Journal of Fatigue, Vol. 21, No. 10, 30.11.1999, p. 1051-1062.

Research output: Contribution to journalArticle

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T1 - Parametric equations for T-butt weld toe stress intensity factors

AU - Brennan, F.P.

AU - Dover, W.D.

AU - Karé, R.F.

AU - Hellier, A.K.

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N2 - 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.

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