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Title: Simulation of the temperature distribution in the selective beam melting process for polymer material

In the present contribution the temperature distribution in the selective beam melting process for polymer materials is simulated to better understand the influence of process parameters on the properties of the produced part. The basis for the developed simulation tool is the nonlinear heat equation including temperature dependent functions for the heat capacity and the heat conduction which were obtained by experimental measurements. The effect of latent heat occurring in the process is also taken into account. The heat equation is discretized in time and space where a Runge-Kutta method of Radau IIA type is used for time integration. An adaptive finite element method is applied for the discretization in space and the model is implemented into the finite element library deal.II. The heat and cooling rate as important process parameters are simulated for different beam velocities. The ability for computing these process parameters makes the simulation tool suited for optimizing the process management of selective beam melting plants.
Authors:
; ;  [1]
  1. Chair of Applied Mechanics, Friedrich-Alexander-Universität Erlangen-Nürnberg (Germany)
Publication Date:
OSTI Identifier:
22270997
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1593; Journal Issue: 1; Conference: PPS-29: 29. international conference of the Polymer Processing Society, Nuremberg (Germany), 15-19 Jul 2013; Other Information: (c) 2014 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COMPUTERIZED SIMULATION; DIFFERENTIAL EQUATIONS; FINITE ELEMENT METHOD; MELTING; NONLINEAR PROBLEMS; POLYMERS; RUNGE-KUTTA METHOD; SPECIFIC HEAT; TEMPERATURE DEPENDENCE; TEMPERATURE DISTRIBUTION; THERMAL CONDUCTION; THERMAL CONDUCTIVITY