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A thermal finite element model with efficient computation of surface heat fluxes for directed-energy deposition process and application to laser metal deposition of IN718

Abstract:

In this study, a numerically efficient thermal finite element process model is developed to predict the melt-pool characteristics of directed-energy deposition (DED) process. The model uses a new technique to compute the effective surface heat loss terms in the form of a volumetric heat sink term in order to avoid the redefinition of surface heat fluxes from the free-surfaces after addition of every layer. In addition, thermal model incorporated the heat losses due to evaporation and Marangon...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1016/j.jmapro.2022.04.049

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Role:
Author
ORCID:
0000-0003-4657-298X
Publisher:
Elsevier
Journal:
Journal of Manufacturing Processes More from this journal
Volume:
79
Pages:
369-382
Publication date:
2022-05-08
Acceptance date:
2022-02-10
DOI:
ISSN:
1526-6125
Language:
English
Keywords:
Pubs id:
1318237
Local pid:
pubs:1318237
Deposit date:
2023-05-10

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