Piezoelectrics & Acoustooptics, Volume. 45, Issue 4, 640(2023)

Analysis of Influence of Meso-Structure Characteristics on Internal Stress Field of Piezoelectric Stack

YAO Zuocong, HU Heping, GAO Le, and ZHANG Shiming
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  • [in Chinese]
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    The internal stress field of the piezoelectric stack is one of the main factors affecting its reliability. Based on the Comsol Multiphysics finite element software, establishes the fine-scale finite element calculation model of piezoelectric stack is established, the accuracy of the model is verified through the theoretical analysis. The comparative analysis of the effects of the meso-structure characteristics such as different electrode configuration, ceramic layer thickness, and the presence or absence of transition segment on the internal stress field of the stack is carried out. The results show that the stress concentration exists in two kinds of electrode configurations of the piezoelectric stacks, and the maximum stress concentration value of the interdigitated electrode stack is much higher than that of the full electrode stack. The thickness of the ceramic layer does not affect the distribution position of the internal stress concentration of the stack, the maximum shear stress decreases with the increase of thickness, and the maximum normal stress increases with the increase of thickness. The maximum stress concentration value of active ceramics in the transition site can be effectively reduced by setting the transition segment ceramic, and enhance the reliability of piezoelectric stacked.

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    YAO Zuocong, HU Heping, GAO Le, ZHANG Shiming. Analysis of Influence of Meso-Structure Characteristics on Internal Stress Field of Piezoelectric Stack[J]. Piezoelectrics & Acoustooptics, 2023, 45(4): 640

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    Paper Information

    Special Issue:

    Received: Mar. 12, 2023

    Accepted: --

    Published Online: May. 9, 2024

    The Author Email:

    DOI:10.11977/j.issn.1004-2474.2023.04.031

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