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Numerical modelling of heat transfer and experimental validation in powder-bed fusion with the virtual domain approximation

Attribution-NonCommercial-NoDerivs 4.0 International © 2019 Elsevier info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0 ;ISSN: 0168-874X ;EISSN: 1872-6925 ;DOI: 10.1016/j.finel.2019.103343

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Title:
Numerical modelling of heat transfer and experimental validation in powder-bed fusion with the virtual domain approximation
Author: Miranda Neiva, Eric ; Chiumenti, Michèle ; Cervera Ruiz, Miguel ; Salsi, Emilio ; Piscopo, Gabriele ; Badia, Santiago ; Martín Huertas, Alberto Francisco ; Chen, Zhuoer ; Lee, Caroline ; Davies, Christopher
Subjects: Additive Manufacturing (AM) ; Anàlisi numèrica ; Enginyeria dels materials ; Fabricació ; Finite elements (FE) ; High performance computing (HPC) ; Manufacturing processes ; Matemàtiques i estadística ; Mathematical models ; Metal·lúrgia ; Models matemàtics ; Mètodes en elements finits ; Powder-bed fusion (PBF) ; Selective laser melting (SLM) ; Thermal Analysis ; Àrees temàtiques de la UPC
Description: Among metal additive manufacturing technologies, powder-bed fusion features very thin layers and rapid solidification rates, leading to long build jobs and a highly localized process. Many efforts are being devoted to accelerate simulation times for practical industrial applications. The new approach suggested here, the virtual domain approximation, is a physics-based rationale for spatial reduction of the domain in the thermal finite-element analysis at the part scale. Computational experiments address, among others, validation against a large physical experiment of 17.5[cm3]of deposited volume in 647 layers. For fast and automatic parameter estimation at such level of complexity, a high-performance computing framework is employed. It couples FEMPAR-AM,a specialized parallel finite-element software, with Dakota, for the parametric exploration. Compared to previous state-of-the-art, this formulation provides higher accuracy at the same computational cost. This sets the path to a fully virtualized model, considering an upwards-moving domain covering the last printed layers. Peer Reviewed
Creation Date: 2020-01
Language: English
Identifier: ISSN: 0168-874X
EISSN: 1872-6925
DOI: 10.1016/j.finel.2019.103343
Source: Recercat

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Numerical modelling of heat transfer and experimental validation in powder-bed fusion with the virtual domain approximation

Attribution-NonCommercial-NoDerivs 4.0 International © 2019 Elsevier info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0 ;ISSN: 0168-874X ;EISSN: 1872-6925 ;DOI: 10.1016/j.finel.2019.103343

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