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Cummins, Sharen
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document
Advances in Multiscale Modelling of Metal Additive Manufacturing
Abstract
Metal powder bed fusion has become a key technology in additive manufacturing of parts or components having complex geometries. In this process, highly transient physical phenomena that occur at different length scales are difficult to observe. Additionally, experimental data needed for process understanding and improvement are challenging to obtain. Modelling therefore becomes a crucial tool to provide more insight into the process.This presentation reports our recent advances in multiscale modelling of metal powder bed fusion process. Physics phenomena such as powder raking, powder melting and solidification, flow of liquid metal in the melt pool, heat transfer, microstructure evolution, and the residual stress and deformation of the component are treated using several different computational techniques. The framework to develop and link different models of different physical processes into a comprehensive model of laser powder-bed fusion additive manufacturing is discussed and demonstrated.