Numerical modelling of heat transfer and experimental validation in powder-bed fusion with the virtual domain approximation
Visualitza/Obre
10.1016/j.finel.2019.103343
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/172674
Tipus de documentArticle
Data publicació2020-01
Condicions d'accésAccés obert
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Reconeixement-NoComercial-SenseObraDerivada Internacional
ProjecteEMUSIC - Efficient Manufacturing for Aerospace Components USing Additive Manufacturing, Net Shape HIP and Investment Casting (EC-H2020-690725)
CAxMan - Computer Aided Technologies for Additive Manufacturing (EC-H2020-680448)
CAxMan - Computer Aided Technologies for Additive Manufacturing (EC-H2020-680448)
Abstract
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.
CitacióNeiva, E. [et al.]. Numerical modelling of heat transfer and experimental validation in powder-bed fusion with the virtual domain approximation. "Finite elements in analysis and design", Gener 2020, vol. 168, p. 103343:1-103343:17.
ISSN0168-874X
Versió de l'editorhttps://www.sciencedirect.com/science/article/pii/S0168874X19302070
Altres identificadorshttps://arxiv.org/abs/1811.12372
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1811.12372.pdf | Postprint final draft | 1,912Mb | Visualitza/Obre |