Parametric equations for T-butt weld toe stress intensity factors

✍ Scribed by F.P. Brennan; W.D. Dover; R.F. Karé; A.K. Hellier

• Book ID: 104288868
• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 450 KB
• Volume: 21
• Category: Article
• ISSN: 0142-1123
• DOI: 10.1016/s0142-1123(99)00090-0

✦ Synopsis

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.