An extended laser beam heating model for a numerical platform to simulate multi‑material selective laser melting

Svyetlichnyy, Dmytro and Bajda, Szymon and Krzyzanowski, Michal (2023) An extended laser beam heating model for a numerical platform to simulate multi‑material selective laser melting. Journal of Advanced Manufacturing Technology. ISSN 0268-3768

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Abstract

A laser beam heating model (LBHM) is an important part of a platform for numerical modelling of a multi-material selective laser melting process. The LBHM is utilised as a ray-tracing algorithm that is widely applied for rendering in different applications, mainly for visualisation and very recently for laser heating models in selective laser melting. The model presented in this paper was further extended to transparent and translucent materials, including materials where transparency is dependent on the material temperature. In addition to refection and surface absorption, commonly considered in such models, phenomena such as refraction, scattering and volume absorption were also implemented. Considering associated energy transfer, the model represents a laser beam as a stream of moving articles, i.e. photons of the same energy. When the photons meet a boundary between materials, they are reflected, absorbed or transmitted according to geometric and thermal interfacial characteristics. This paper describes the LBHM in detail, its verification and validation, and also presents several
simulation examples of the entire selective laser melting process with implemented LBHM.

Item Type:	Article
Identification Number:	10.1007/s00170-023-12138-x
Dates:	Date Event 8 August 2023 Accepted 21 August 2023 Published
Uncontrolled Keywords:	Laser Beam Heating Model, Ray-tracing Algorithm, Selective Laser Melting, Lattice Boltzmann Method
Subjects:	CAH10 - engineering and technology > CAH10-01 - engineering > CAH10-01-02 - mechanical engineering CAH10 - engineering and technology > CAH10-03 - materials and technology > CAH10-03-02 - materials technology CAH10 - engineering and technology > CAH10-03 - materials and technology > CAH10-03-07 - materials science
Divisions:	Faculty of Computing, Engineering and the Built Environment > College of Engineering
Depositing User:	Michal Krzyzanowski
Date Deposited:	30 Aug 2023 15:58
Last Modified:	20 Jun 2024 11:50
URI:	https://www.open-access.bcu.ac.uk/id/eprint/14703

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