Abstract
Some piezoelectric ceramic materials do behave in a nonlinear way when they are subjected to large electric or mechanical stress fields. This macroscopic nonlinearity comes from microscopic domain switchings during which one type of variant switches to other types of variants under large electromechanical fields. This switchable piezoelectric ceramic materials are called ferroelectric ceramics. In the present paper, a typical ferroelectric material particle is represented by a regular dodecahedron representative volume element (RVE) which includes twenty distinct types of variants, and a finite element analysis is carried out on a cubic specimen subjected to both a constant compressive stress and an electric field cycling. The calculation results are compared with experimental observations and isotropy of the responses is discussed.
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The authors gratefully acknowledge the support of the Agency for Defense Development through Grant ADD 01-05-01.
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Kim, SJ., Choi, J. & Kwak, M. A finite element prediction of ferroelectric switching behavior using a regular dodecahedron RVE. Computational Mechanics 31, 469–478 (2003). https://doi.org/10.1007/s00466-003-0453-0
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DOI: https://doi.org/10.1007/s00466-003-0453-0