Article
Materials Science, Multidisciplinary
Xiaoying Zhuang, Chuong Nguyen, S. S. Nanthakumar, Ludovic Chamoin, Yabin Jin, Timon Rabczuk
Summary: This paper presents a methodology for inverse design of reconfigurable topological insulators in plate-like structures. By utilizing topology optimization and piezoelectric patches, the space inversion symmetry is broken, leading to the real-time reconfigurability of topological interfaces for waveguide applications.
MATERIALS & DESIGN
(2022)
Article
Physics, Applied
K. Mekrache, R. Sainidou, P. Rembert, N. Stefanou, B. Morvan
Summary: This study investigates a variety of multidispersive, localized, or extended frequency bands induced by inductance-based external electric circuits in piezoelectric phononic plates, analyzing their origin and interaction with guided modes. The bands can be easily tuned through external circuit parameters, allowing for non-destructive, real-time control of dispersion characteristics in the structures. This research has implications for improving surface acoustic wave components by offering additional degrees of freedom for control.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Acoustics
L. Fei, L. Haumesser, L. -P. Tran-Huu-Hue
Summary: This paper proposes a method of passive electrical decoupling to reduce the crosstalk phenomenon in multi-element ultrasonic transducers. By applying inductive shunts at the electrodes, band gaps can be created to prevent the establishment of the first thickness mode in the plate, reducing the mechanical inter-element coupling. Experimental results show that this method can make the acoustic radiation from one sector excited at the resonance frequency closer to that of a piston mode, effectively reducing the inter-element coupling.
Article
Mechanics
Xinxin Wang, Tiangui Ye, Liangjiang Cheng, Guoyong Jin, Yukun Chen, Zhigang Liu
Summary: The underwater electro-mechanical vibro-acoustic characteristics of functionally graded piezoelectric material (FGPM) plates with general boundary conditions are studied in this paper. The collocation points method is developed to handle the vibro-acoustic coupling and calculate the virtual work of secondary sound pressure. The proposed FGPM plate model considers the macroscopically inhomogeneous electro-mechanical properties using the Voigt model and is validated using Rayleigh-Ritz procedure.
COMPOSITE STRUCTURES
(2023)
Article
Physics, Condensed Matter
E. J. P. Miranda Jr, J. M. C. Dos Santos
Summary: The study reports on the wave attenuation of elastic Bloch waves in 1-3 piezoelectric phononic structures with BaTiO3 inclusions in a polymeric matrix, showing the observation of complete Bragg-type band gaps that improve band gap width and wave attenuation. This design can be used for surface acoustic wave filters and piezocomposite transducer design.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Engineering, Multidisciplinary
Kai Zhou, Zhengmin Hu, Hongxing Hua
Summary: This paper presents a unified solution for the nonstationary stochastic responses of FGPM plates with general boundary conditions. The accuracy of the proposed model is validated by comparing the obtained results with those from published literature, and the effects of key parameters on the stochastic response of FGPM plates are investigated.
APPLIED MATHEMATICAL MODELLING
(2021)
Article
Instruments & Instrumentation
Zhiwen Wang, Chuanping Zhou, Yuan Dong, Shunpeng Zhu, Wanrong Pei, Jiayou Weng
Summary: Based on Mindlin's theory and the plane wave expansion method, formulas were proposed for the governing equations and dispersion relations of bending waves in piezoelectric phononic crystal plates. Shear correction factors can be obtained through transcendental equations based on forced vibrations of the plate. The inclusion shape and lattice type of the plates have a dramatic effect on the mid-to-high frequency band gaps. Piezoelectric materials exhibit distinct eigenfrequencies at the high-symmetry point UGamma at low frequencies. Thickness and cuts influence the band gap width differently than in two-dimensional models.
SMART MATERIALS AND STRUCTURES
(2023)
Article
Engineering, Multidisciplinary
Iman Mehdipour, Farhang Honarvar
Summary: The piezoelectric unimorph circular diaphragm is widely used in energy harvesting, sensing, and actuating applications. Structural optimization can improve its performance. The location of zero-strain points and the generated electric field depend on various parameters, while the thicknesses of the layers and external pressure load have minimal impact.
APPLIED MATHEMATICAL MODELLING
(2021)
Article
Acoustics
Denghui Qian, Jinghong Wu, Feiyang He
Summary: The plane wave expansion method is applied to calculate the band structures of a piezoelectric phononic crystal nanobeam, considering the effects of electro-mechanical coupling fields and geometric parameters. The results demonstrate the active role of these influence rules in the design and control of nano electro-mechanical systems.
Article
Mechanics
M. Miniaci, M. Mazzotti, A. Amendola, F. Fraternali
Summary: Phononic crystals and elastic metamaterials have received attention for unconventional wave control. Structures with adaptive elastic properties have been proposed for wave manipulation. External mechanical load can significantly impact band gaps induced by inertial amplification, showing notable shifts and dispersion changes. The application of external prestress can switch the structure's behavior from pass-band to stop-band, providing opportunities for real-time tunable wave manipulation.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2021)
Article
Engineering, Civil
Shuguang Zuo, Panxue Liu, Xudong Wu, Qi Zhang, Yi Kong, Dawei Zhou
Summary: This paper explores a new approach to reducing the interior noise of one vehicle body through the flexural wave bandgap. The theoretical model of the piezoelectric stack is improved and an ultra-wide bandgap is achieved. The study investigates the influence of electrical parameters on flexural wave attenuation and examines the applicability of the presented resonators for different host plates. The concept of phononic crystal with the unique bandgap is exploited to enhance the interior sound performance of one vehicle body.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Mechanical
Baizhan Xia, Zihan Jiang, Liang Tong, Shengjie Zheng, Xianfeng Man
Summary: This paper investigates the role of disclinations in elastic phononic plates with topological nontrivial structures. It is found that the lattice deformation caused by disclinations creates a pentagonal core with local five-fold symmetry, which can produce localized topological bound states. These topological bound states exhibit good immunity to the size and imperfections of the plates.
ACTA MECHANICA SINICA
(2022)
Article
Engineering, Mechanical
Xiaoji Song, Guoyong Jin, Tiangui Ye, Saifeng Zhong
Summary: This paper proposes a formula for studying the vibration characteristics of a rectangular plate, using various methods to establish the vibration model and investigating the factors influencing the vibration response, such as boundary conditions and the direction of turbulent flow speed.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Mechanics
Najmeh Foroozani, Dmitry Krasnov, Joerg Schumacher
Summary: The study investigates the influence of different thermal boundary conditions on turbulent Rayleigh-Benard convection flows, showing that global heat transfer can be enhanced by up to 19% with conjugate heat transfer. While differences in local thermal boundary scales exist, the impact on mean temperature profiles and velocity fluctuations is relatively weak.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Acoustics
Yuanyuan Ye, Chaosheng Mei, Li Li, Xuelin Wang, Ling Ling, Yujin Hu
Summary: A new method to broaden the Bragg scattering band gaps of phononic crystals using the graded supercell configuration is proposed in this study. The graded structural design can merge adjacent multiple band gaps into an extremely broad one. The effects of the main structural parameters related to graded supercell design on band gap broadening are studied by simulation and verified by the experiment.
JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME
(2022)
Article
Engineering, Marine
B. Morvan, D. Priour, Z. Guede, G. Bles
Article
Physics, Multidisciplinary
M. Miniaci, A. S. Gliozzi, B. Morvan, A. Krushynska, F. Bosia, M. Scalerandi, N. M. Pugno
PHYSICAL REVIEW LETTERS
(2017)
Article
Physics, Applied
N. Kherraz, L. Haumesser, F. Levassort, P. Benard, B. Morvan
JOURNAL OF APPLIED PHYSICS
(2018)
Article
Materials Science, Multidisciplinary
Marco Miniaci, Matteo Mazzotti, Maciej Radzieriski, Nesrine Kherrazl, Pawel Kudela, Wieslaw Ostachowicz, Bruno Morvanl, Federico Bosia, Nicola M. Pugno
FRONTIERS IN MATERIALS
(2018)
Article
Physics, Multidisciplinary
M. Miniaci, R. K. Pal, B. Morvan, M. Ruzzene
Editorial Material
Materials Science, Multidisciplinary
Federico Bosia, Anastasiia O. Krushynska, Marco Miniaci, Bruno Morvan, Nicola M. Pugno
FRONTIERS IN MATERIALS
(2018)
Article
Instruments & Instrumentation
F. H. Chikh-Bled, N. Kherraz, R. Sainidou, P. Rembert, B. Morvan
SMART MATERIALS AND STRUCTURES
(2019)
Article
Physics, Applied
K. Mekrache, R. Sainidou, P. Rembert, N. Stefanou, B. Morvan
Summary: This study investigates a variety of multidispersive, localized, or extended frequency bands induced by inductance-based external electric circuits in piezoelectric phononic plates, analyzing their origin and interaction with guided modes. The bands can be easily tuned through external circuit parameters, allowing for non-destructive, real-time control of dispersion characteristics in the structures. This research has implications for improving surface acoustic wave components by offering additional degrees of freedom for control.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Multidisciplinary Sciences
Sichao Qu, Nan Gao, Alain Tinel, Bruno Morvan, Vicente Romero-Garcia, Jean-Philippe Groby, Ping Sheng
Summary: By using a structured tungsten-polyurethane composite, we have designed and experimentally realized an underwater acoustic absorber with high absorption capability in the frequency range of 4 to 20 kHz, measured in a 5.6 m by 3.6 m water pool. The broadband functionality is achieved through optimizing the distribution of Fabry-Perot resonances.
Article
Acoustics
Omar Asfar, Bruno Morvan
Summary: Shear wave excitation of a triangular solid bar reveals the existence of horizontally polarized (SH) and vertically polarized (SV) shear waves. The SH waves are obtained from superposition of plane waves and their reflections. The SV waves are related to sub triangles and their cutoff wavenumbers lie between those of the Neumann SH modes. Dispersion curves confirm the correct cutoff wavenumbers of both SH and SV waves.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2023)
Article
Materials Science, Multidisciplinary
N. Kherraz, F-H Chikh-Bled, R. Sainidou, B. Morvan, P. Rembert
Proceedings Paper
Materials Science, Multidisciplinary
N. Kherraz, B. Morvan, L. Haumesser, M. Miniaci, R. Sainidou, P. Rembert, F. Levassort
2017 11TH INTERNATIONAL CONGRESS ON ENGINEERED MATERIALS PLATFORMS FOR NOVEL WAVE PHENOMENA (METAMATERIALS)
(2017)
Proceedings Paper
Materials Science, Multidisciplinary
M. Miniaci, A. O. Krushynska, F. Bosia, B. Morvan, N. M. Pugno
2017 11TH INTERNATIONAL CONGRESS ON ENGINEERED MATERIALS PLATFORMS FOR NOVEL WAVE PHENOMENA (METAMATERIALS)
(2017)
Article
Materials Science, Multidisciplinary
A. Alevizaki, R. Sainidou, P. Rembert, B. Morvan, N. Stefanou
