Zobrazeno 1 - 10
of 181
pro vyhledávání: '"Amirkhizi, Alireza"'
Autor:
Caliskan, Erdem, Cheney, Willoughby, Wang, Weidi, Plaisted, Thomas, Amirkhizi, Alireza V., Abedi, Reza
The microstructure of a material can be engineered to achieve unique properties not found in nature. Microstructured materials, also known as metamaterials (MMs), can exhibit properties utilizing local resonance and dynamics of their heterogeneous mi
Externí odkaz:
http://arxiv.org/abs/2410.01029
We study the band structure and scattering of in-plane coupled longitudinal and shear stress waves in layered media and observe that exceptional points (EP) appear for elastic (lossless) media, when parameterized with real-valued frequency and tangen
Externí odkaz:
http://arxiv.org/abs/2409.16162
Optimization of functionally graded metamaterial arrays with a high dimensional and continuous geometric design space is cumbersome and could be accelerated via machine learning tools. Mechanical metamaterials can manipulate acoustic or ultrasonic wa
Externí odkaz:
http://arxiv.org/abs/2306.10628
Autor:
Wang, Weidi, Amirkhizi, Alireza
Dynamic mechanical metamaterials (MMs) are artificial media composed of periodic micro-structures, designed to manipulate wave propagation. Modeling and designing these materials can be computationally demanding due to the broad design space spanned
Externí odkaz:
http://arxiv.org/abs/2302.14175
Autor:
Morris, Joshua, Amirkhizi, Alireza V.
Scattering experiments can be leveraged to extract the effective properties of a heterogeneous metamaterial slab based on multi-point measurements in surrounding media. In this technique, two measurements are made in the ambient media on each side of
Externí odkaz:
http://arxiv.org/abs/2206.12453
In this work, a parameterized eigenvalue problem is analyzed for a phononic array in a 2D stress wave scattering setup, and a corresponding sensing application of this system is proposed to achieve source angle localization. The phononic domain consi
Externí odkaz:
http://arxiv.org/abs/2108.12080
Publikováno v:
Mechanics of Materials (2021) 1-13
In this work, the analysis of oblique anti-plane shear waves propagation and scattering in low frequency resonant micro-structured layered media with viscoelastic constituent layers is presented. The band structure of the infinitely periodic systems
Externí odkaz:
http://arxiv.org/abs/2104.10571
Autor:
Wang, Weidi, Amirkhizi, Alireza V.
Publikováno v:
Eur. Phys. J. Plus 137, 414 (2022)
Exceptional points (EPs) are complex singularities of parametric linear operators where two or more eigenvalues and eigenvectors coalesce. EPs are attracting increasing interest in mechanical metamaterials due to their strong potentials for wave filt
Externí odkaz:
http://arxiv.org/abs/2012.15360