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ORIGINAL RESEARCH article
Front. Phys.
Sec. Physical Acoustics and Ultrasonics
Volume 13 - 2025 |
doi: 10.3389/fphy.2025.1527682
This article is part of the Research Topic Recent Advances in Phononic Crystals, Acoustic and Mechanical Metamaterials View all articles
Scattering and stress concentration of SH guided waves by a semicircular hole on the boundary of an infinite piezoelectric ceramic plate
Provisionally accepted- 1 Qiqihar University, Qiqihar, China
- 2 School of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, Heilongjiang Province, China
In this paper, the dynamic issues related to semicircular depressions in piezoelectric ceramic plates are investigated. The fundamental mechanical problems of dynamic stress concentration factor and electric field intensity concentration factor are addressed using the complex function approach, wave function expansion method, and repeated mirror method, and the analytical expressions for the relevant stress concentration are presented. The influences of the dimensionless parameter wave number, strip thickness, and guided wave order on the stress concentration of the SH guided wave incident within the strip are explored.The results indicate that, with a fixed plate thickness, the 0 order high frequency guided wave exerts a more pronounced influence on the stress concentration near the hole, resulting in more severe damage. Under the electromechanical coupling effect, the detrimental impact of the electric field far exceeds that of the stress field. Consequently, it is essential to focus on the adverse effects imposed by the electric field.
Keywords: Piezoelectric ceramics, Dynamic stress concentration factor, Electric field intensity concentration factor, SH wave guide, electromechanical coupling effect
Received: 13 Nov 2024; Accepted: 04 Feb 2025.
Copyright: © 2025 Qu, Qi and Guo. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Enxiang Qu, Qiqihar University, Qiqihar, China
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