Topology optimisation for vibration bandgaps of periodic composite plates using the modified couple stress continuum DOI
Yu Cong, Zixu Xia, Shuitao Gu

и другие.

Mathematics and Mechanics of Solids, Год журнала: 2024, Номер 29(5), С. 881 - 903

Опубликована: Янв. 23, 2024

We propose a topology optimisation approach that can effectively account for the size effect of periodic composite plates to determine optimal material distribution achieving largest bandgap width. The is based on modified couple stress continuum and uses relative width as objective function, with volume constraints defined constraint function. properties are represented by solid isotropic penalisation (SIMP) interpolation model, optimality criteria (OC) algorithm employed update design variables. To address significant microplate structure, we use model dynamic behaviour unit cell. Melosh–Zienkiewicz–Cheung (MZC) finite element ensure nodal [Formula: see text] continuity achieve high-order elasticity respect inter-element continuity. Our results demonstrate proposed methodology capable designing cell configurations significantly improve also investigate impact thickness limitations optimised configuration. obtained suggest framework promising geometries effect.

Язык: Английский

Chiral phononic crystal-inspired railway track for low-frequency vibration suppression DOI
Shuai Qu, Wei Ding, Liwei Dong

и другие.

International Journal of Mechanical Sciences, Год журнала: 2024, Номер 274, С. 109275 - 109275

Опубликована: Апрель 8, 2024

Язык: Английский

Процитировано

24

Full-band vibration isolation and energy absorption via cuttlebone-inspired lattice structures DOI
Yanmiao Wang, Xiaohong Chen, Yuanxi Sun

и другие.

International Journal of Mechanical Sciences, Год журнала: 2024, Номер 274, С. 109283 - 109283

Опубликована: Апрель 12, 2024

Язык: Английский

Процитировано

13

A tensegrity-inspired inertial amplification metastructure with tunable dynamic characteristics DOI
Ao Li,

Zhanguo Bai,

Yin Xu

и другие.

Journal of the Mechanics and Physics of Solids, Год журнала: 2025, Номер unknown, С. 106037 - 106037

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

1

Microstructural design for elastic wave attenuation in 3D printed nacre-like bioinspired metamaterials lightened with hollow platelets DOI Creative Commons
Umberto De Maio, Fabrizio Greco, Raimondo Luciano

и другие.

Mechanics Research Communications, Год журнала: 2023, Номер 128, С. 104045 - 104045

Опубликована: Янв. 9, 2023

In this work, the wave propagation properties of lightened bioinspired composite materials are investigated. A new nacre-like microstructure is proposed demonstrating that incorporation hollow platelets inside soft matrix and application specific prestress states represent a viable way for tuning complete band gaps range without varying geometry length scale also improving mechanical in terms homogenized tangent moduli. The dispersion relations obtained by adopting Bloch-Floquet theory to investigate appearance several geometrical material parameters (platelets aspect ratio, joints thickness, void volume fraction, shear modulus contrast). results reveal combinations which excellent absorption capabilities periodic thanks may provide opportunities microstructural design 3D printed metamaterials.

Язык: Английский

Процитировано

23

Isotacticity in chiral phononic crystals for low-frequency bandgap DOI
Wei Ding, Tianning Chen,

Dewen Yu

и другие.

International Journal of Mechanical Sciences, Год журнала: 2023, Номер 261, С. 108678 - 108678

Опубликована: Авг. 12, 2023

Язык: Английский

Процитировано

22

Mechanical properties of hierarchical lattice via strain gradient homogenization approach DOI
Hua Yang,

Zhenkun Liu,

Yi Xia

и другие.

Composites Part B Engineering, Год журнала: 2023, Номер 271, С. 111153 - 111153

Опубликована: Дек. 23, 2023

Язык: Английский

Процитировано

18

Honeycomb-spiderweb-inspired self-similar hybrid cellular structures for impact applications DOI Creative Commons

K. Tewari,

Mihir Kumar Pandit,

M.M. Mahapatra

и другие.

Defence Technology, Год журнала: 2024, Номер unknown

Опубликована: Июль 1, 2024

Inspired by nature's self-similar designs, novel honeycomb-spiderweb based hybrid cellular structures are proposed here for efficient energy absorption in impact applications. The is enhanced optimizing the geometry and topology a given mass. structure arrived after thorough analysis of topologically structures. optimized cell designs rigorously tested considering dynamic loads involving crush high-velocity bullet impact. Furthermore, influence thickness, radial connectivity, order patterning at unit level also investigated. maximum crushing efficiency attained found to be more than 95%, which significantly higher most existing traditional designs. Later on, first second-order hierarchical developed during used prepare cores sandwich Impact tests performed on using standard 9-mm parabellum. multistaging resistance investigated maintaining constant total thickness mass structure. Moreover, avoid layer-wise weak zones hence, attain uniform out-of-plane strength, off-setting each stage proposed. with observed withstand velocities as high 170 m/s 270 m/s, respectively.

Язык: Английский

Процитировано

8

Elastic metasurfaces with tailored initial phase for broadband subwavelength focusing DOI
Meizhen Li, Yabin Hu, Jiali Cheng

и другие.

International Journal of Mechanical Sciences, Год журнала: 2024, Номер 268, С. 109048 - 109048

Опубликована: Янв. 21, 2024

Язык: Английский

Процитировано

7

Elastic Wave Propagation Control in Porous and Finitely Deformed Locally Resonant Nacre-like Metamaterials DOI Open Access
Umberto De Maio, Fabrizio Greco, Paolo Nevone Blasi

и другие.

Materials, Год журнала: 2024, Номер 17(3), С. 705 - 705

Опубликована: Фев. 1, 2024

Recent studies have shown that the mechanical properties of bioinspired periodic composite materials can be strongly influenced by finite deformation effects, leading to highly nonlinear static and dynamic behaviors at multiple length scales. For instance, in porous nacre-like microstructures, microscopic macroscopic instabilities may occur for a given uniaxial loading process and, as consequence, wave attenuation evolve function microstructural evolution, designating it metamaterials. The numerical outcomes provide new opportunities design bioinspired, soft metamaterials characterized high deformability enhanced elastic capabilities insertion voids lead cores.

Язык: Английский

Процитировано

7

Enhanced high-frequency continualization scheme for inertial beam-lattice metamaterials DOI Creative Commons
Andrea Bacigalupo,

Paolo Badino,

Vito Diana

и другие.

International Journal of Mechanical Sciences, Год журнала: 2024, Номер unknown, С. 109794 - 109794

Опубликована: Окт. 1, 2024

Язык: Английский

Процитировано

7