Process simulation could be a tool for decision-making and process optimization since virtual analysis facilitates the possibility to explore ‘‘what if’’ scenarios. In order to enhance the knowledge in this field, this study proposes a three-dimensional FE thermal model to simulate the transient heat transfer during EBM process. Several specific subroutines are developed to take into account beam position during scan and material state change from powder to liquid in the melting phase and from liquid to solid during cooling. The model is validated against literature data. The developed thermal model is able to forecast the evolution of the temperature inside the layers in the EBM process. Moreover, FE model properly predicts the geometry of melt pool and scan line.
Simulation of Material State Change and Thermal Distribution in Electron Beam Melting (EBM) / Galati, Manuela; Salmi, Alessandro; Atzeni, Eleonora; Iuliano, Luca. - ELETTRONICO. - (2014), pp. 109-118. (Intervento presentato al convegno 5th International Conference on Additive Technologies iCAT2014 tenutosi a Vienna, Austria nel 16-17 October 2014).
Simulation of Material State Change and Thermal Distribution in Electron Beam Melting (EBM)
GALATI, MANUELA;SALMI, ALESSANDRO;ATZENI, ELEONORA;IULIANO, Luca
2014
Abstract
Process simulation could be a tool for decision-making and process optimization since virtual analysis facilitates the possibility to explore ‘‘what if’’ scenarios. In order to enhance the knowledge in this field, this study proposes a three-dimensional FE thermal model to simulate the transient heat transfer during EBM process. Several specific subroutines are developed to take into account beam position during scan and material state change from powder to liquid in the melting phase and from liquid to solid during cooling. The model is validated against literature data. The developed thermal model is able to forecast the evolution of the temperature inside the layers in the EBM process. Moreover, FE model properly predicts the geometry of melt pool and scan line.Pubblicazioni consigliate
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https://hdl.handle.net/11583/2588428
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