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Dynamic modelling and efficiency prediction for forging operations under a screw press

Article dans une revue avec comité de lecture
Author
SONG, Heyu
107452 Laboratoire de Conception Fabrication Commande [LCFC]
ccDURAND, Camille
107452 Laboratoire de Conception Fabrication Commande [LCFC]
ccBAUDOUIN, Cyrille
107452 Laboratoire de Conception Fabrication Commande [LCFC]
ccBIGOT, Regis
107452 Laboratoire de Conception Fabrication Commande [LCFC]

URI
http://hdl.handle.net/10985/26124
DOI
10.1007/s00170-024-14145-y
Date
2024-07
Journal
The International Journal of Advanced Manufacturing Technology

Abstract

AbstractAccurate predictions concerning a forging process can be obtained by numerical simulation, but only with a thorough knowledge of the main process variables. The material flow behavior and the interface effects are already well studied in the literature, but not the machine behavior, although it is required to estimate blow efficiency and deduce the energy actually transmitted to the workpiece. In this paper, an experimental methodology was applied to determine a spring-mass-damping model and its associated parameters for a screw press. The model and its parameters were identified with press strikes performed without billet. For validation, simulations were performed to predict blows on copper billets. The model’s predictions were in good agreement with the experimental measurements for ten consecutive blows on a copper billet. The decrease of process efficiency and the evolution from inelastic blows to elastic blows were correctly depicted by the model.

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