Modelling of forging processes assisted by piezoelectric actuators : principles and experimental validation | Nguyen, T.H.
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Modelling of forging processes assisted by piezoelectric actuators : principles and experimental validation

Archive ouverte : Article de revue

Nguyen, T.H. | Giraud-Audine, Christophe | Lemaire-Semail, Betty | Abba, Gabriel | Bigot, Régis

Edité par HAL CCSD ; Institute of Electrical and Electronics Engineers

International audience. 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.

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