Publisher DOI: 10.1080/09377255.2018.1518692
Title: A simplified welding simulation approach used to design a fatigue test specimen containing residual stresses
Language: English
Authors: Friedrich, Nils 
Ehlers, Sören 
Issue Date: 2-Jan-2019
Source: Ship Technology Research 1 (66): 22-37 (2019-01-02)
Abstract (english): 
Although it is known that residual stresses may influence the fatigue strength of welded structures, they are usually not included explicitly in fatigue assessments. Experimental investigations on the influence welding residual stresses have on fatigue are complicated by the fact that small-scale specimens often show only little tensile residual stresses. In practice, residual stresses are usually not known and difficult to determine. Welding simulation approaches usually demand for experimental calibration making them unsuitable for residual stress predictions. The reliability of their results is however limited. Therefore, a welding simulation approach applying uniform temperatures without experimental calibration was proposed. Different input parameters were varied to determine their influence on the calculated residual stresses. The approach was then used to design a small-scale fatigue test specimen showing tensile residual stress at the weld. Specimens were produced based on the simulation results and residual stress measurements were compared to the calculated values. © 2018, © University of Duisburg-Essen 2018.
ISSN: 0937-7255
Journal: Ship Technology Research 
Institute: Konstruktion und Festigkeit von Schiffen M-10 
Document Type: Article
Project: Ansatz zur Berücksichtigung von Schweißeigenspannungen bei der Ermüdungsfestigkeitsbewertung mittels direkter numerischer Simulation 
More Funding information: DFG EH 485/4-1
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