È presentato un modello di piastra laminata piezoelettrica, dedotto razionalmente dalla teoria tridimensionale della piezoelettricità di Voigt. Si tratta di un'estensione ai laminati piezoelettrici della teoria di laminato elastico detta «alla Reissner-Mindlin». Le equazioni che governano il problema del laminato piezoelettrico sono fornite sia in forma differenziale che in forma variazionale. Il modello proposto è utilizzato nell'analisi di alcuni semplici problemi, allo scopo di saggiarne l'affidabilità. I risultati da esso forniti risultano in soddisfacente accordo con quelli ottenuti tramite l'applicazione della teoria della piezoelettricità di Voigt.
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Con il contributo del Ministero per i Beni e le Attività Culturali