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Structural Engineering and Mechanics Volume 6, Number 4, June 1998 , pages 467-471 DOI: https://doi.org/10.12989/sem.1998.6.4.467 |
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A mathematical model to predict fatigue notch factor of butt joints |
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Nguyen NT, Wahab MA
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| Abstract | ||
| A mathematical model is developed to predict the fatigue notch factor of butt welds subject to number of parameters such as weld geometry, residual stresses under dynamic combined loading conditions (tensile and bending). Linear elastic fracture mechanics, finite element analysis, dimensional analysis and superposition approaches are used for the modelling. The predicted results are in good agreement with the available experimental data. As a result, scatters of the fatigue data can be significantly reduced by plotting S-N curve as (S . K-f) vs. N. | ||
| Key Words | ||
| fatigue notch factor, stress intensity factor, crack propagation, weld geometry, residual stress and butt welded joints | ||
| Address | ||
| Univ Adelaide, Adelaide, SA 5005, Australia | ||