64 citations · 180 across the 10 of their papers we have counts for
10 papers
Perspective on Non-Hermitian Elastodynamics
Johan Christensen, Michael R. Haberman, Ankit Srivastava +2
The manipulation of mechanical waves is a long-standing challenge for scientists and engineers, as numerous devices require their control. The current forefront of research in the…
Data-driven Identification of Parametric Governing Equations of Dynamical Systems Using the Signed Cumulative Distribution Transform
Abu Hasnat Mohammad Rubaiyat, Duy H. Thai, Jonathan M. Nichols +6
This paper presents a novel data-driven approach to identify partial differential equation (PDE) parameters of a dynamical system. Specifically, we adopt a mathematical "transport"…
Discrete One-dimensional Models for the Electromomentum Coupling
Kevin Muhafra, Michael R. Haberman, Gal Shmuel
Willis dynamic homogenization theory revealed that the effective linear momentum of elastic composites is coupled to their effective strain. % This result, which is partially due t…
Sound diffusion with spatiotemporally modulated acoustic metasurfaces
Janghoon Kang, Michael R. Haberman
Traditional sound diffusers are quasi-random phase gratings attached to reflecting surfaces whose purpose is to augment the spatiotemporal incoherence of the acoustic field scatter…
Nonreciprocity and mode conversion in a spatiotemporally modulated elastic wave circulator
Benjamin M. Goldsberry, Samuel P. Wallen, Michael R. Haberman
Acoustic and elastic metamaterials with time- and space-dependent material properties have received great attention recently as a means to break reciprocity for propagating mechani…
Optimal design of acoustic metamaterial cloaks under uncertainty
Peng Chen, Michael R. Haberman, Omar Ghattas
In this work, we consider the problem of optimal design of an acoustic cloak under uncertainty and develop scalable approximation and optimization methods to solve this problem. Th…
Acoustic scattering from a fluid cylinder with Willis constitutive properties
Michael B. Muhlestein, Benjamin M. Goldsberry, Andrew N. Norris +1
A material that exhibits Willis coupling has constitutive equations that couple the pressure-strain and momentum-velocity relationships. This coupling arises from subwavelength asy…
Non-reciprocal wave phenomena in spring-mass chains with effective stiffness modulation induced by geometric nonlinearity
Samuel P. Wallen, Michael R. Haberman
Acoustic non-reciprocity has been shown to enable a plethora of effects analogous to phenomena seen in quantum physics and electromagnetics, such as immunity from back-scattering a…
Broadband focusing of underwater sound using a transparent pentamode lens
Xiaoshi Su, Andrew N. Norris, Colby W. Cushing +2
We report an inhomogeneous acoustic metamaterial lens based on spatial variation of refractive index for broadband focusing of underwater sound. The index gradient follows a modifi…
A high transmission broadband gradient index lens using elastic shell acoustic metamaterial elements
Alexey S. Titovich, Michael R. Haberman, Andrew N. Norris
The use of cylindrical elastic shells as elements in acoustic metamaterial devices is demonstrated through simulations and underwater measurements of a cylindrical-to-plane wave le…