Modeling of Solidification Process to Cast EDM Electrodes from Rapid Prototyping

  1. Prof. Yves Bréchet
  1. Professor José M.G.C. Ferreira1 and
  2. Eng. Artur J. S. Mateus2

Published Online: 19 DEC 2005

DOI: 10.1002/3527606157.ch52

Microstructures, Mechanical Properties and Processes - Computer Simulation and Modelling, Volume 3

Microstructures, Mechanical Properties and Processes - Computer Simulation and Modelling, Volume 3

How to Cite

Ferreira, J. M.G.C. and Mateus, A. J. S. (2000) Modeling of Solidification Process to Cast EDM Electrodes from Rapid Prototyping, in Microstructures, Mechanical Properties and Processes - Computer Simulation and Modelling, Volume 3 (ed Y. Bréchet), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527606157.ch52

Editor Information

  1. Institut Nat. Polytechnique de Grenoble, L.T.P.-C.M. ENSEEG, BP75, Domaine Universitaires, 38402 Saint Martin D'Hères Cedex, France; Tel.: 0033–76–82 6610; Fax: 0033–76–82 6644

Author Information

  1. 1

    Instituto Superior Técnico - Universidade Técnica de Lisboa - Portugal

  2. 2

    Instituto Politécnico de Leiria - Portugal

Publication History

  1. Published Online: 19 DEC 2005
  2. Published Print: 20 APR 2000

Book Series:

  1. EUROMAT 99

ISBN Information

Print ISBN: 9783527301225

Online ISBN: 9783527606153

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Keywords:

  • microstructures;
  • computer simulation;
  • modelling of processes;
  • solidification process modeling;
  • EDM cast electrodes;
  • rapid prototyping

Summary

This study investigates the application of Finite Difference Method (FDM) to predict casting defects and to optimize the casting shape, or process parameters, before applying Rapid Prototyping to manufacture Electro Discharge Machining electrodes. A combination of numerical and experimental techniques in the modeling and analysis of EDM cast electrodes are introduced. The functions for analysis by simulation, as the Critical Fraction Solid (CFS), the Niyama criterion that is the traditional thermal criterion for shrinkage prediction, and the Material Density Function (MDF), are discussed. The integration of FDM analyses to optimize the geometry of cast electrodes prior to prototype in regard to EDM tests is evaluated. This work shows the relevant use of computer analysis linked with Rapid Prototyping within the product design optimization process, illustrating the success of the approach by using the FDM on a practical case study. Some conclusions are exposed.