An Analytical Method for Predicting Residual Stress Distribution in Selective Laser Melted/Sintered Alloys
D. Boruah, X. Zhang, M. Dorédownload PDF
Abstract. Residual stresses that build up during selective laser melting or sintering (SLM/SLS) process can influence the dimensional accuracy, mechanical properties and in-service performance of SLM/SLS parts. Therefore, it is crucial to understand, predict and effectively control residual stresses in a part. The present study aims at developing an analytical model to predict the through-thickness distribution of residual stresses in an SLM part-substrate system. The proposed model demonstrates how residual stresses built up in the substrate and previously deposited layers are related to the stress induced by a newly deposited layer, based on the stress and moment equilibrium requirements. The model has been validated by published experimental measurements and verified with existing analytical/numerical models. The outcomes of the study suggest that the proposed analytical model can be used for quick estimation of residual stress distribution and the order of magnitude.
Residual Stress, Modelling, Selective Laser Melting, Additive Manufacturing
Published online 9/11/2018, 6 pages
Copyright © 2018 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: D. Boruah, X. Zhang, M. Doré, ‘An Analytical Method for Predicting Residual Stress Distribution in Selective Laser Melted/Sintered Alloys’, Materials Research Proceedings, Vol. 6, pp 283-288, 2018
The article was published as article 45 of the book Residual Stresses 2018
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. 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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