Modelling of forging processes assisted by piezoelectric actuators : principles and experimental validation

T.H. Nguyen (1) , Christophe Giraud-Audine (1) , Betty Lemaire-Semail (1) , Gabriel Abba (2) , Régis Bigot (2)

1 L2EP - Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697
2 LCFC - Laboratoire de Conception Fabrication Commande

This paper presents the modelling of a forging processes assisted by a piezoelectric actuator (PA), which is used to generate specific low frequency vibration waveforms. Experimental results show that such waveforms reduce the necessary forging force during upsetting tests. The main problems which remain are defining the appropriate waveforms, predicting their influence on the process and the actuator and designing the control. Due to the complexity of the interactions between the different components of the system, a complete model of the process is needed. Such a model is developed here using an energetic macroscopic representation to preserve causality throughout the modelling. Simulation results are then compared to representative experimental results.

Mots clés: Piezoelectric actuator; Forging; Graphical models; Energetic Macroscopic Representation

Domaines: Automatique / Robotique; Génie des procédés

T.H. Nguyen, Christophe Giraud-Audine, Betty Lemaire-Semail, Gabriel Abba, Régis Bigot. Modelling of forging processes assisted by piezoelectric actuators : principles and experimental validation. IEEE Transactions on Industry Applications, 2014, 50 (1), pp.244-252. ⟨hal-01064858⟩