Analysis of effect of domain polarization switching near sharp piezoelectric bi-material notches

Analysis of effect of domain polarization switching near sharp piezoelectric bi-material notches

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The asymptotic in-plane problem of a bi-material sharp notch with various geometrical pattern and an interface crack in a generally monoclinic piezoelectric bimaterial is analysed using the expanded Lekhnitskii-Eshelby-Stroh formalism, [1]. Assuming small-scale domain switching, the size and shape of the domain switching zone is calculated adopting the energetic switching criterion and micromechanical domain switching model suggested by Hwang et al., [2] for a specified material combination, geometry and polarization orientation. Next, the boundary value problem with the prescribed spontaneous strain and polarization within the switching domain is solved and their influence on the in-plane intensity of singularity at a vertex of the interface in piezoelectric bi-material-bonded joint or at the tip of interface crack is computed. The effects of geometrical and loading parameters on the resulting variation of the intensity of singularity are discussed.

The asymptotic in-plane problem of a bi-material sharp notch with various geometrical pattern and an interface crack in a generally monoclinic piezoelectric bimaterial is analysed using the expanded Lekhnitskii-Eshelby-Stroh formalism, [1]. Assuming small-scale domain switching, the size and shape of the domain switching zone is calculated adopting the energetic switching criterion and micromechanical domain switching model suggested by Hwang et al., [2] for a specified material combination, geometry and polarization orientation. Next, the boundary value problem with the prescribed spontaneous strain and polarization within the switching domain is solved and their influence on the in-plane intensity of singularity at a vertex of the interface in piezoelectric bi-material-bonded joint or at the tip of interface crack is computed. The effects of geometrical and loading parameters on the resulting variation of the intensity of singularity are discussed.

Polarization switching, Piezoelectricity, Bi-material notch, Asymptotic solution, Mixed FEM

Polarization switching, Piezoelectricity, Bi-material notch, Asymptotic solution, Mixed FEM

HRSTKA, M.; KOTOUL, M.; PROFANT, T.

2024

12.06.2023

American Institute of Physics Inc.

Melville, NY, USA

9780735445482

20th International Conference on Fracture and Damage Mechanics, DM 2022

AIP Conference Proceedings

0094-243X

AIP conference proceedings

2848

Spojené státy americké

020004-1

020004-17

17

https://pubs.aip.org/aip/acp/article/2848/1/020004/2895667/Analysis-of-effect-of-domain-polarization