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Production Engineering

, Volume 7, Issue 4, pp 409–416 | Cite as

Fast 3D inverse simulation of hot forging processes via Medial Axis Transformation: an approach for preform estimation in hot die forging

  • A. SantangeloEmail author
  • P. BlankeEmail author
  • T. Hadifi
  • F.-E. Wolter
  • B.-A. Behrens
Computer Aided Engineering

Abstract

In hot die forging processes, the selection of an ideal preform is of great importance with respect to cavity filling and mechanical load. The common procedure in order to define an adequate preform is the usage of Finite-Element-Analysis (FEA), usually as an iterative process in which various preforms are tested with regard to their suitability. An approach that aims at reducing the number of trials by proposing a first estimation of a suitable preform is presented in this paper. It is conjectured that the material flow paths and resistance can be described by the cavity shape using the Medial Axis Transformation. Based on this, a local inverse material flow for time discrete steps is calculated. The result is a first estimation of an adequate preform shape within a few minutes as an input for further FEA. FE-based parametric design optimization procedure is then presented and compared to the inverse approach, which is identified as a useful complement for the forward simulation technique.

Keywords

Hot die forging Medial Axis Transformation Preform estimation 

Notes

Acknowledgments

The authors thank the German Research Foundation (DFG) for the financial support of the research project "Schnelle inverse Materialflusssimulation für die Massivumformung mittels der dreidimensionalen Mediale-Achse-Transformation” (project numbers BE 1691/110-1 and WO 954/7-1).

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Copyright information

© German Academic Society for Production Engineering (WGP) 2013

Authors and Affiliations

  1. 1.Institute of Forming Technology and Machines (IFUM)Leibniz Universität HannoverGarbsenGermany
  2. 2.Welfenlab, Division of Computer GraphicsLeibniz Universität HannoverHanoverGermany

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