Cracking Tendencies in Fillet Welds
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Simplified models of several configurations of structural steel arc weldments were made as an aid to understanding the importance of penetration and weld size with respect to fatigue crack initiation tendencies. Surprising findings were that the presence of a gap (simulating less than ideal fit up) may increase or reduce the value of the highest stress depending on the configuration. The effect of residual stresses was not included in the model, however causes and effects of residual stresses in welds will be briefly described in a qualitative manner.
KeywordsContact stresses Effective throat FEA Model Fillet weld Fit up Leg length Penetration Residual stress
- 1.Lincoln Electric Company: The Procedure Handbook of Arc Welding, 13th edn. Dec 1994, Figs. 2–104 and Tables 2–7, pp. 2.2–4 and 2.2–5.Google Scholar