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Vers une prédiction de la durée de vie des outils de forge à chaud par une détermination numérique du régime thermique établi et de l'usure abrasive

Abstract : In forging industry, we want to decrease production costs, in order to obtain ther cheapest rate: tool cost/workpiece. Numerical simulation permit to study feasibility using low cost developments. Nowadays, we can use numerical simulation to optimize tool shape. To increase tool life, we must take into account two main factors: wear and thermal-mechanical loads undergone by tools. In this document, we use a thermal-mechanical and a numerical formulation for a thermo-mechanical coupled problem for a complete system: tool/workpiece. The solution of this problem, permit us to simulate tool behaviour during hot forging process. CPU time increase because of this formulation, so we investigate several strategies to decrease this CPU time. We can use those strategies and after comparing them, we can notice their own advantages. For each method, user must choose between time and reliability. This document, can help user to choose the best method to solve his problem. Thanks to thermal and mechanical results obtained on the tools, we can simulate tool wear. Then finally, we implmented four different methods to simulate thermal and mechanical cycling, in order to simulate forging passes.
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https://pastel.archives-ouvertes.fr/pastel-00001370
Contributor : Ecole Mines Paristech <>
Submitted on : Monday, September 5, 2005 - 8:00:00 AM
Last modification on : Thursday, September 24, 2020 - 5:22:54 PM
Long-term archiving on: : Thursday, September 30, 2010 - 6:49:49 PM

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  • HAL Id : pastel-00001370, version 1

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Laurent Terzolo. Vers une prédiction de la durée de vie des outils de forge à chaud par une détermination numérique du régime thermique établi et de l'usure abrasive. Sciences de l'ingénieur [physics]. École Nationale Supérieure des Mines de Paris, 2004. Français. ⟨NNT : 2004ENMP1236⟩. ⟨pastel-00001370⟩

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