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3D Multi-pass finite element welding modelling of butt-welded plate specimen


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Opened Access 3D Multi-pass finite element welding modelling of butt-welded plate specimen
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Author: Sanz Balduz, Luis Javier
Salesa Bordanaba, Ángel
González Abril, Emilio
Date: 2015
Published in: 3rd International Conference on Mechanical Models in Structural Engineering, 7-26. Sevilla, España : CMMoST 2015
ISBN/ISSN: 978-84-606-9356-7
Document type: Presentation
Abstract: A multi-pass welding of a thin rectangular (dog-bone shaped) butt joint plate is numerically simulated as a coupled thermo-mechanical transient problem. The simulation uses an “element-birth” technique to simplify the complexity of the problem. The paper discusses the challenges of the simulation of a multi-pass weld problem and the utility of the results for practical applications. The final solution shows crucial stress distributions in a challenging geometry where large thermal transients and gradients are created by the welding procedure. The results also indicate the plastic yielding of the weld-joint after extensive cooling of the joined plate. The displacements from the results can be used to estimate the extent of distortions qualitatively. Despite minimal resources (2 CPUs on a standard Intel desktop architecture and 2 GB RAM over duration of 4 days) the procedure is able to provide adequate details in predicting residual stresses for multi-pass welded components.
Size: 2.963Mb
Format: PDF


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