Numerical Stabilization of the Melt Front for Laser Beam Cutting

Torsten Adolph (), Willi Schönauer (), Markus Niessen () and Wolfgang Schulz ()
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Torsten Adolph: Karlsruhe Institute of Technology, Steinbuch Centre for Computing
Willi Schönauer: Karlsruhe Institute of Technology, Steinbuch Centre for Computing
Markus Niessen: ILT Aachen, Fraunhofer Institute for Laser Technology
Wolfgang Schulz: ILT Aachen, Fraunhofer Institute for Laser Technology

A chapter in Numerical Mathematics and Advanced Applications 2009, 2010, pp 69-76 from Springer

Abstract: Abstract The Finite Difference Element Method (FDEM) is a black-box solver that solves by a finite difference method arbitrary nonlinear systems of elliptic and parabolic partial differential equations (PDEs) on an unstructured FEM grid in 2D or 3D. For each node we generate difference formulas of consistency order q with a sophisticated algorithm. An unprecedented feature for such a general black-box is the error estimate that is computed together with the solution. In this paper we present the numerical simulation of the laser beam cutting of a metal sheet. This is a free boundary problem where we compute the temperature and the form of the melt front in the metal sheet. During the cutting process, the numerical stabilization of the melt front is a great challenge.

Keywords: Metal Sheet; Gaussian Beam; Parabolic Partial Differential Equation; Inverted List; Melt Front (search for similar items in EconPapers)
Date: 2010
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-642-11795-4_6

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DOI: 10.1007/978-3-642-11795-4_6

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