Multiphysical modeling of the heating phase in the polymer powder bed fusion process

Journal article

Authors/Editors

Siginer, Dennis

Research Areas

No matching items found.

Publication Details

Author list: Xin L, Boutaous M, Xin SH, Siginer DA

Publisher: Elsevier

Place: AMSTERDAM

Publication year: 2017

Journal: Additive Manufacturing (2214-7810)

Journal acronym: ADDIT MANUF

Volume number: 18

Start page: 121

End page: 135

Number of pages: 15

ISSN: 2214-7810

eISSN: 2214-8604

Languages: English-Great Britain (EN-GB)

View in Web of Science | View on publisher site | View citing articles in Web of Science

Abstract

A numerical framework based on a modified Monte Carlo ray-tracing method and the Discrete Element Method (DEM) is developed to predict the physical behavior of discrete particles during the Powder Bed Fusion (SLS) process. A comprehensive model coupling all major aspects of the underlying physics and the corresponding numerical framework, accounting for radiative heat transfer, heat conduction, sintering and granular dynamics among others, is developed. In particular, the effect of scattering on the laser-particle interaction is investigated and accounted for in the numerical framework. The spatially and temporally varying distribution of heat and displacement within the additively manufactured object are captured in detail. The model is validated through the comparison of simulated results with existing experimental results in the literature. (C) 2017 Elsevier B.V. All rights reserved.

Keywords

Additive manufacturing, Discrete element method, Laser scattering, Monte carlo ray-tracing method, Multiphysics, NUMERICAL MODELING, Polymer powder bed fusion, Polymer processing

Documents