OS0402 ドメイン・スイッチングを考慮した多結晶圧電材料のマルチスケール非線形有限要素解析(先端材料システムの力学とメゾスケールモデリング,オーガナイズドセッション)

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  • OS0402 Multiscale Nonlinear Finite Element Analysis of Polycrystalline Piezoelectric Materials Considering Domain Switching

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External load turns the orientations of spontaneous polarization in microscopic domain structures of piezoelectric materials. This domain switching in microscopic structure dominates macroscopic piezoelectric performance. This paper presents a multiscale nonlinear finite element method through a crystallographic homogenization method to analyze ferroelectric hysteresis behaviors caused by domain switching. As a computational example, the electric field - strain and electric field - electric displacement relations were discussed for BaTiO_3 polycrystal with regular distribution of crystal orientations.

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