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2011
Conference Paper
Titel
Methods for reliable modeling of piezoceramic materials
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.