## Abstract Residual stresses due to the welding process in steel structures can significantly affect the fatigue behaviour. Usually, high tensile residual stresses up to the yield strength are conservatively assumed at the weld toes. This conservative assumption can result in misleading fatigue as
Effect of residual stress on fatigue behaviour of notches
โ Scribed by Kewei Xu; Jiawen He; Huijiu Zhou
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 724 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0142-1123
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A numerical model is developed to predict the combined effect of a weld toe undercut, residual stresses and mi~alignment on the fatigue strength and fatigue life of butt welded joints subjected to pulsating tensile loading. Linear Elastic Fracture Mechanics (LEFM), Finite Element Analysis (FEA) and
Analyses are made for predicting fatigue limit of notches with and without the effect of compressive residual stresses. The residual stresses are introduced by shot peening or surface rolling, and detected by X-ray diffraction technique. The theoretical work is based on the local stress method and f