Title: Analysis of the temperature field during the selective laser melting process based on a finite element model

Authors: Zhehan Chen; Xianhui Zong; Xiaohua Zhang

Addresses: School of Mechanical Engineering, University of Science and Technology Beijing, No. 30, Xueyuan Road, Haidian District, Beijing, 100083, China ' School of Mechanical Engineering, University of Science and Technology Beijing, No. 30, Xueyuan Road, Haidian District, Beijing, 100083, China ' Beijing Materials Handling Research Institute Co., LTD, No. 52 Lama Temple Street, Dongcheng District, Beijing, 100007, China

Abstract: Selective laser melting (SLM) is a kind of metal additive manufacturing technology, which has been widely employed in the field of medicine, aeronautics and astronautics. Analysis of the temperature field during the SLM process is one of the most interested research areas for online process monitoring and quality assurance based on big data technologies. In this paper, a framework of SLM process monitoring based on big data technologies is proposed, which illustrates the principle of online monitoring and close-loop control for SLM process; then a finite element model (FEM) of the SLM process is implemented, to efficiently provide sufficient data for the framework, and three kinds of temperature features are used to evaluate the characteristics of the temperature field during the forming process; finally, both the simulation and actual experiments are carried out, to verify the feasibility of the proposed framework and finite element model. [Submitted 2 March 2018; Accepted 11 July 2018]

Keywords: finite element model; FEM; selective laser melting; SLM; temperature field; process monitoring; additive manufacturing.

DOI: 10.1504/IJMR.2019.104399

International Journal of Manufacturing Research, 2019 Vol.14 No.4, pp.355 - 372

Received: 02 Mar 2018
Accepted: 11 Jul 2018

Published online: 09 Jan 2020 *

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