Abstract
The influence of thermal fields on the electromechanical behavior of ferroelectric ceramics under cyclic electric loading is presented. To predict the temperature effect, a 3D micromechanical model for tetragonal domain switching is extended by including thermal effects. Numerical simulations were done through the finite element program Abaqus with the help of a user-defined element. Besides external heat sources, a change in temperature is considered by internal heat generated due to domain switching. Material properties are assumed to be linearly dependent on the temperature. The temperature influence on the behavior of ferroelectrics is shown by means of the strain and polarization hysteresis loops. The model shows a good qualitative agreement with the experimental results available in the literature.
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Communicated by Andreas Öchsner.
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El Khatib, O., Kozinov, S. & Kuna, M. A micro–macro scale approach for thermal effects in ferroelectrics. Continuum Mech. Thermodyn. 31, 1439–1452 (2019). https://doi.org/10.1007/s00161-019-00760-8
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DOI: https://doi.org/10.1007/s00161-019-00760-8