Determination of welding heat source parameters for fem simulation based on temperature history and real bead shape

Determination of welding heat source parameters for fem simulation based on temperature history and real bead shape

SZYNDLER Joanna, SCHMIDT Alexander, HÄRTEL Sebastian

Abstract. To improve process understanding and increase the numerical prediction quality of a wire arc additive manufacturing (WAAM) process, this paper focuses on determining the parameters of a numerical model that reproduces an experimental setup of a welding process, with particular attention given to the actual shape of the weld bead. The dimensions of the heat source (HS) model in a welding process are determined based on experimentally measured weld pool sizes as well as temperature history at selected points below and adjacent to a weld seam. The whole experimental setup is accurately reproduced within the Simufact.Welding software and an optimization procedure is applied to obtain the best possible agreement between experimental and numerical results. A validated numerical model with reliable parameters for two heat sources is later used to predict and observe material behavior during the WAAM process of more complex parts.

Keywords
Finite Element Method (FEM), Wire Arc Additive Manufacturing (WAAM), Calibration Procedure, Goldak’s Heat Source Parameters

Published online 4/19/2023, 10 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: SZYNDLER Joanna, SCHMIDT Alexander, HÄRTEL Sebastian, Determination of welding heat source parameters for fem simulation based on temperature history and real bead shape, Materials Research Proceedings, Vol. 28, pp 159-168, 2023

DOI: https://doi.org/10.21741/9781644902479-18

The article was published as article 18 of the book Material Forming

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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