Modelling of piezoelectric actuators used in forging processes: principles and experimental validation
Communication avec acte
Auteur
NGUYEN, Thanh HungLEMAIRE-SEMAIL, BettyABBA, Gabriel 
GIRAUD-AUDINE, ChristopheRésumé
This paper deals with the modelling of a piezo- electric stack actuator used to generate specific low frequency vibration waveforms to assist forging processes. 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 in- fluence 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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Communication avec acte; ; ; ;GIRAUD-AUDINE, Christophe (IEEE, 2014)
This paper presents the design of a mechatronic system integrating iezoelectric multi-actuators, which is used to generate low-frequency vibrations to assist the forging process. With the aim of controlling the complete ...
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Communication sans acte; ; ; ;GIRAUD-AUDINE, Christophe (2013)
Use of vibration in the forming process has already shown numerous advantages in the improvement of mechanical and surface properties of workpiece such as good surface or less friction between die and workpiece. The aim ...
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Communication avec acte; ; ; ;GIRAUD-AUDINE, Christophe (IEEE, 2014)
This paper addresses the control of a tool developed to superimpose vibrations along several directions on a piece during forging. Piezoelectric actuators are used to provide the required forces and speeds. Due to the ...
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Article dans une revue avec comité de lecture; ; ;GIRAUD-AUDINE, Christophe (Institute of Electrical and Electronics Engineers, 2014)
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 ...
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Article dans une revue avec comité de lecture; ; ; ;GIRAUD-AUDINE, Christophe (EDP Sciences, 2014)
Application of vibration in metal forming process has already shown numerous advantages in the past. It improves not only mechanical and surface properties of workpiece but the integration of vibration in metal forming ...