期刊
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
卷 209, 期 2, 页码 700-706出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2008.02.040
关键词
Selective laser sintering (SLS); Rapid prototyping; Finite element; Polycarbonate; Process modelling
A transient three-dimensional finite element model is developed to simulate the phase transformation during the selective laser sintering process; taking into account the thermal and sintering phenomena involved in this process. A bi-level structure integration procedure is chosen, in which the temperature dependent thermal conductivity, specific heat, and density are integrated at the outer level then used as material constants for the integration of the heat equation in the inner level. Results for temperature and density distribution, using a polycarbonate powder, are presented and discussed. (c) 2008 Published by Elsevier B.V.
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