Numerical Modelling of Heat Transfer and Material Flow During Wire-Based Electron Beam Additive Manufacturing

A. V. Shcherbakov, R. V. Rodyakina, D. A. Gaponova

Abstract


The development of a mathematical model provides an analysis of heat transfer and metal flow during wire-based electron-beam additive manufacturing described. The procedure for solving the heat equation for the metal in the solid phase and the Navier-Stokes equations in the liquid phase, based on the use of the finite-difference method and the predictor-corrector procedure is described. An algorithm for numerical approximation of the motion of the free surface of the melt, using the concept of the volume of fluid (VOF) is describer. The  original method for calculating the effect of surface tension forces, based on the numerical calculation of the surface curvature index is proposed. The results of simulating the melting of a wire element localized above a substrate made of 316L steel are described

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DOI: http://dx.doi.org/10.24892/RIJIE/20190109

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