Results 101 to 110 of about 9,574 (206)

Relation of Bulk‐to‐Shear Loss Factors in Viscoelastic Auxetic Metamaterials

physica status solidi (b), Volume 263, Issue 5, May 2026.
This article examines the dynamic behavior of isotropic auxetic viscoelastic materials, highlighting how negative Poisson's ratios affect energy dissipation, damping, and the interplay between bulk and shear moduli. By extending established viscoelastic theories to the auxetic range, it defines bound limits and underscores how dynamic Poisson's ratio ...
Simon Preston, Julián Londoño‐Monsalve, Ken E. Evans   +2 more
wiley   +1 more source

Prediction and optimization of acoustic absorption performance of quasi-Helmholtz acoustic metamaterials based on LightGBM algorithm

AIP Advances
Optimization of acoustic metamaterial structures and prediction of acoustic absorption properties have received much attention in various fields. This thesis aims to optimize and predict the acoustic absorption performance of quasi-Helmholtz acoustic ...
Jianxin Xu, Weikang Mao, Xiaoqian Yu, Bingfei Liu   +3 more
doaj   +1 more source

Auxetic Behavior in JUC‐530: The Effect of Interstitial Molecules on Framework Deformation

physica status solidi (b), Volume 263, Issue 5, May 2026.
Auxetic behavior in the JUC‐530 covalent organic framework is predicted by molecular modeling to arise from a cooperative tetrahedral‐flattening mechanism within the framework topology. Guest molecule loading (N2, CH4, benzene) is shown to suppress the negative Poisson's ratio response.
Grace A. Muscat, Maria A. Cardona, Pierre-Sandre Farrugia, Krzysztof K. Dudek, Joseph N. Grima, Ruben Gatt   +5 more
wiley   +1 more source

Modeling and investigation of a multi-resonant metamaterial sound insulator

Archives of Acoustics
A design of multi-resonant acoustic metamaterial sound insulator is proposed to attenuate multi-tonal and broadband noise. The unit cell of the metamaterial consists of a porous material with four, nine, and sixteen embedded Helmholtz resonators and its
Zacharie Laly, Raymond Panneton, Noureddine Atalla, Sebastian Ghinet   +3 more
doaj   +1 more source

Sound reduction by metamaterial-based acoustic enclosure

AIP Advances, 2014
In many practical systems, acoustic radiation control on noise sources contained within a finite volume by an acoustic enclosure is of great importance, but difficult to be accomplished at low frequencies due to the enhanced acoustic-structure ...
Shanshan Yao, Pei Li, Xiaoming Zhou, Gengkai Hu   +3 more
doaj   +1 more source

Relaxed micromorphic broadband scattering for finite-size meta-structures -- a detailed development

, 2019
The conception of new metamaterials showing unorthodox behaviors with respect to elastic wavepropagation has become possible in recent years thanks to powerful dynamical homogenization techniques.
Aivaliotis, Alexios, D'Agostino, Marco-Valerio, Daouadji, Ali, Madeo, Angela, Neff, Patrizio, Tallarico, Domenico   +5 more
core  

Effective Negative Mass Nonlinear Acoustic Metamaterial with Pure Cubic Oscillator

Advances in Civil Engineering, 2018
Acoustic metamaterial, which can prohibit effectively the elastic wave propagation in the bandgap frequency range, has broad application prospects in the vibration and noise reduction areas.
Ming Gao, Zhiqiang Wu, Zhijie Wen
doaj   +1 more source

Fluid-loaded metasurfaces

, 2017
We consider wave propagation along fluid-loaded structures which take the form of an elastic plate augmented by an array of resonators forming a metasurface, that is, a surface structured with sub-wavelength resonators.
Colombi, A., Colquitt, D. J., Craster, R. V., Skelton, E. A.   +3 more
core  

Analysis of Influencing Factors for Stackable and Expandable Acoustic Metamaterial with Multiple Tortuous Channels. [PDF]

Materials (Basel), 2023
Bi S, Yang F, Shen X, Zhang J, Yang X, Zhang H, Peng W.   +6 more
europepmc   +1 more source

Acoustic computational metamaterials [PDF]

Chinese Science Bulletin, 2021
Zengyao Lü, Yuanshuai Ding, Peng Liu, Yongmao Pei   +3 more
openaire   +1 more source