Basic Assumptions Applied To Mathematical Modeling Of The Processes Involved In Selective Laser Sintering Of Metal Powders

摘要

The article concerns the formulation and description of the basic assumptions applied to mathematical modeling of the processes of solid-phase and liquid-phase contact formation between metal powder particles of elementary two-tier cell during selective laser sintering (SLS). These basic assumptions are based on the well-known ideas about the interaction of light flux with metal surface, as well as about the interaction in the contact zone of surface potentials created by a double electric layer. An algorithm for converting a powder medium consisting of particles of metal alloys of various shapes and sizes into an equivalent analogue consisting of monospherical particles of a dispersed phase is presented. Basic assumptions applied to mathematical modeling are recommended to be used in the simulation of direct metal printing by SLS.