A hybrid phenomenological model for ferroelectroelastic ceramics. Part II: Morphotropic PZT ceramics |
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Institution: | 1. State Key Lab for Turbulence and Complex Systems, College of Engineering, Peking University, Beijing 100871, China;2. Department of Engineering mechanics, School of Civil Engineering, Wuhan University, Wuhan 430072, China;3. Center for Applied Physics and Technologies, Peking University, Beijing 100871, China |
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Abstract: | In this part II of a two part series, the rate-independent hybrid phenomenological constitutive model introduced in part I is modified to account for the material behavior of morphotropic lead zirconate titanate ceramics (PZT ceramics). The modifications are based on a discussion of the available literature results regarding the micro-structure of these materials. In particular, a monoclinic phase and a highly simplified representation of the hierarchical structure of micro-domains and nano-domains observed experimentally are incorporated into the model. It is shown that experimental data for the commercially available morphotropic PZT material PIC151 (PI Ceramic GmbH, Lederhose, Germany) can be reproduced and predicted based on the modified hybrid model. |
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Keywords: | Constitutive laws Piezoelectricity Ferroelectroelasticity |
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