38 citations · 126 across the 6 of their papers we have counts for
6 papers
Scattering of mechanical waves from the perspective of open systems
Hossein Khodavirdi, Amir Ashkan Mokhtari, Ankit Srivastava
In this paper, we consider the problem of mechanical wave scattering from a spatially finite system into an infinite surrounding environment. The goal is to illuminate why the scat…
Angle-dependent Phononic Dynamics for Deep Learning and Source Localization
Weidi Wang, Amir Ashkan Mokhtari, Ankit Srivastava +1
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 pr…
Spectral extended finite element method for band structure calculations in phononic crystals
Eric B. Chin, Amir Ashkan Mokhtari, Ankit Srivastava +1
In this paper, we compute the band structure of one- and two-dimensional phononic composites using the extended finite element method (X-FEM) on structured higher-order (spectral)…
Scattering under Linear Non Self-Adjoint Operators: Case of in-Plane Elastic Waves
Amir Ashkan Mokhtari, Yan Lu, Qiyuan Zhou +2
In this paper, we consider the problem of the scattering of in-plane waves at an interface between a homogeneous medium and a metamaterial. The relevant eigenmodes in the two regio…
On the Properties of Phononic Eigenvalue Problems
Amir Ashkan Mokhtari, Yan Lu, Ankit Srivastava
In this paper, we consider the operator properties of various phononic eigenvalue problems. We aim to answer some fundamental questions about the eigenvalues and eigenvectors of ph…
On the Emergence of Negative Effective Density and Modulus in 2-phase Phononic Crystals
Amir Ashkan Mokhtari, Yan Lu, Ankit Srivastava
In this paper we report metamaterial properties including negative and singular effective properties for what would traditionally be considered non locally resonant 2-phase phononi…