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Methods for reliable modeling of piezoceramic materials

 
: Rupitsch, S.J.; Nicolai, M.; Wolf, F.; Ilg, J.; Schönecker, A.; Lerch, R.

Neugebauer, Reimund ; Fraunhofer-Institut für Werkzeugmaschinen und Umformtechnik -IWU-, Chemnitz; TU Chemnitz, Institut für Werkzeugmaschinen und Produktionsprozesse:
Integration of active functions into structural components : 3rd Scientific Symposium CRC/Transregio 39 PT-PIESA, Chemnitz, 12.-13. Oktober 2011. High-volume production-compatible production technologies for lightmetal and fiber composite-based components with integrated piezo sensores and actuators
Chemnitz, 2011
ISBN: 978-3-00-035549-3
S.71-76
Wissenschaftliches Symposium des Transregio PT-PIESA <3, 2011, Chemnitz>
Englisch
Konferenzbeitrag
Fraunhofer IKTS ()
Piezokeramik; Modellmethode; Simulationsmodell; Darstellungsmethode; Großsignalverhalten; Computer-Leistung; Werkstoffverhalten; Kleinsignalverhalten; Prädiktion

Abstract
A contribution deals with methods enabling reliable computer based modeling of piezoceramic materials. Thereby, the small as well as the large signal behavior are discussed. For the small signal behavior, a mathematical inverse method is introducec yielding realistic material parameters. The large signal behavior is modeled with two different approaches, namely a phenomenological and a viscoplastic. While the phenomenological approach offers an outstanding computation performance, the viscoplastic apprach can be used to obtain detailed information of physical processes taking place inside the piezoceramic. As the comparisons of various simulations and measurements clearly show, the presented methods allow for a reliable prediction of the piezoceramic material behavior.

: http://publica.fraunhofer.de/dokumente/N-192417.html