Article
Engineering, Multidisciplinary
Xiao Guo, Peijun Wei
Summary: This paper theoretically investigates the propagation properties of in-plane elastic waves in a nano-scale N type piezoelectric semiconductor material/piezoelectric dielectric material layered periodic composite. The mathematical derivations of transfer matrices and dispersion equations are based on classical continuum mechanics and the Bloch theorem. The physical influences of semiconductor effect, biasing electric fields, and interface effect on the dispersion curves of in-plane elastic waves are explored through numerical calculations.
APPLIED MATHEMATICAL MODELLING
(2021)
Review
Mechanics
Cherif Othmani, He Zhang, Chaofeng Lue, Yan Qing Wang, Ali Reza Kamali
Summary: The growing usage of elastic, piezoelectric and magneto-electro-elastic composites has led to the development of new numerical methods for predicting dynamic responses. Orthogonal polynomial expansions are suitable for predicting acoustic wave dispersion curves, but may not be effective for structures with significant differences in constituent properties.
COMPOSITE STRUCTURES
(2022)
Article
Physics, Multidisciplinary
A. K. Singh, Sonam Singh, Siddhartha Koley
Summary: The mechanism of Nondestructive testing involves imaging the reflection of Primary wave in piezo composites using a transmitter and receiver circuit, transducer tool, and display devices. The present study aims to explore the reflection of plane waves in a highly anisotropic material.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Physics, Applied
Xiaotian Xu, Michael Newns, Mark Oxborrow
Summary: This paper presents a method for simulating coupled electromagnetic and mechanical vibrations on arbitrarily shaped piezoelectric structures. The method is based on weak forms and can be implemented in any finite-element-method software, allowing accurate simulation of the flow of electromagnetic energy inside and around structures containing piezoelectric materials.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Mathematics, Applied
Sourav Kumar Panja, Subhas Chandra Mandal
Summary: This article presents the interaction of anti-plane shear waves by two collinear cracks in 1D hexagonal piezoelectric quasicrystals. The boundary value problem is transformed into integral equations and solved analytically. The explicit expressions for dynamic stress intensity factors, crack opening displacement, and electric displacement are derived, and the effects of crack length and electric boundary condition are examined.
ZAMM-ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK
(2023)
Article
Mechanics
Ulisses J. Gutierrez-Hernandez, Hendrik Reese, Claus-Dieter Ohl, Pedro A. Quinto-Su
Summary: Researchers have discovered that acoustic cavitation at high frequencies can be achieved through wave propagation in a solid medium. By nucleating cavitation bubbles at nano-sized fractures on a glass substrate and driving their expansion with a leaky Rayleigh wave, and their collapse with a trailing shock wave, the lifetime of the bubbles can be controlled. Experimental results align with simulation models.
JOURNAL OF FLUID MECHANICS
(2023)
Article
Engineering, Civil
Shixuan Shao, Rongyu Xia, Zheng Li
Summary: This paper proposes a novel piezoelectric metasurface for simultaneously manipulating multi-mode guided waves in a plate, which has significant potential in the fields of guided wave manipulation and smart device design.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Multidisciplinary
Shuai Zhu, Hongjun Yu, Liulei Hao, Canjie Huang, Zhen Shen, Jianshan Wang, Licheng Guo
Summary: This work establishes a dynamic domain-independent interaction integral (DII-integral) to extract the dynamic intensity factors (IFs) for Magneto-electro-elastic (MEE) materials. The DII-integral method exhibits superiority over available I-integral methods in studying the dynamic fracture of MEE composites with complex interfaces. After verifying its accuracy, the DII-integral method is applied to investigate the dynamic fracture of PE-MEE-PM layered composites.
APPLIED MATHEMATICAL MODELLING
(2023)
Article
Mechanics
Shasha Zhou, Lu Qi, Rongmin Zhang, Anqing Li, Jinwei Qiao, Shenjie Zhou
Summary: Based on the nonlocal strain gradient theory and flexoelectricity theory, this paper proposes a new model of a transversely isotropic piezoelectric rectangular nano-plate subjected to a distributed load. The novel model considers the nonlocal effect, strain gradient effect, and flexoelectric effect. The electro-mechanical responses of the piezoelectric nano-plate are numerically analyzed based on the new model. The results show that the nonlocal effect and strain gradient effect have significant size dependence on the central deflection and central electric potential, while the flexoelectric effect plays a dominant role in influencing the central electric potential.
Article
Chemistry, Multidisciplinary
Feifei Chen, Chao Jiang, Fapeng Yu, Xiufeng Cheng, Xian Zhao
Summary: The temperature-dependent behaviors of dielectric permittivities, resonant frequencies, elastic compliances, and piezoelectric coefficients of Bi2ZnB2O7 crystals were studied in this research, showing good stability within a certain temperature range.
Article
Acoustics
Yanhui Zhang, Qiang Gao
Summary: This study investigates the reflection and transmission behavior of elastic waves in an anisotropic multilayered piezoelectric structure using the mixed variable method. The wave equation for a homogeneous piezoelectric layer is transformed into a first-order state equation in the Hamiltonian system by introducing a dual vector, and the general solution is expressed in terms of the eigenvalues and eigenvectors of the complex Hamiltonian matrix. By applying a mixed energy matrix, the relationship between the generalized displacement and stress vectors on the upper and lower interfaces of a layer is established.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2021)
Article
Engineering, Multidisciplinary
Van Thuong Nguyen, Guan-Ting Chen, Chyanbin Hwu
Summary: A unified expression is established for the generalized two-dimensional linear anisotropic elastic, piezoelectric, and magneto-electro-elastic solids, simplifying the connection between these different materials. The boundary element method is extended to solve the problems of multibody contact involving any combination of these materials. The study successfully develops two boundary element methods for solving the generalized two-dimensional multibody contact problems.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Article
Mechanics
Abhishek Kumar Singh, Pragati Rajput, Sayantan Guha, Sonam Singh
Summary: The micro-mechanical modeling of a piezoelectric fiber-reinforced composite (PFRC) is established in this study, along with analyzing its electro-mechanical advantages. The characteristics of a Love-type wave propagating at the imperfect interface of a layered structure are analytically studied. The influences of interfacial imperfections and material parameters on the phase velocity and efficiency of transducers and sensors are carefully analyzed. The results of this work have significant applications in various scientific and engineering disciplines.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2022)
Article
Mechanics
Qiang Chen, George Chatzigeorgiou, Fodil Meraghni
Summary: This paper proposes an extended Mori-Tanaka approach to study the piezoelectric response of unidirectional nanoporous composites with energetic surfaces. The simulation includes the consideration of interface using the generalized Gurtin-Murdoch coherent interface model. Analytical solutions for Eshelby's inhomogeneity problems are obtained and the extended multiphysics Mori-Tanaka homogenization scheme is utilized. Comparison with other methods shows the reliability and accuracy of the proposed approach.
COMPOSITE STRUCTURES
(2023)
Article
Mechanics
Roger J. Hosking, Fausto Milinazzo
Summary: This study extends the results of Miles & Sneyd on a simple linear mathematical model for an accelerating line load on a floating ice plate by conducting numerical calculations for the response due to a decelerating load. The results show various relationships between load speeds and deflections, with significances in certain scenarios where deflections may increase significantly.
JOURNAL OF FLUID MECHANICS
(2022)
