115 citations · 537 across the 22 of their papers we have counts for
6 papers · 1 filter
Acoustic Filter Design Using Temperature Tuning
Hossein Sadeghi, A. Srivastava, A. V. Amirkhizi +1
The material properties selection for designing acoustic filters with optimal performance over a range of frequencies requires considerable effort to fabricate and test laboratory…
Evanescent Wave Boundary Layers in Metamaterials and Sidestepping them through a Variational Approach
Ankit Srivastava, John R. Willis
All metamaterial applications are based upon the idea that extreme material properties can be achieved through appropriate dynamic homogenization of composites. This homogenization…
Negative Refraction, Beam Steering, Mode Switching, and High-pass Filtering in a 1-D Periodic Laminate
Ankit Srivastava
In this paper we show that a 1-D phononic crystal (laminate) can exhibit metamaterial wave phenomenon which is traditionally associated with 2-, and 3-D crystals. Moreover, due to…
Variational Methods For Phononic Calculations
Yan Lu, Ankit Srivastava
Three fundamental variational principles used for solving elastodynamic eigenvalue problems are studied within the context of elastic wave propagation in periodic composites (phono…
Combining plane wave expansion and variational techniques for fast phononic computations
Yan Lu, Ankit Srivastava
In this paper the salient features of the Plane Wave Expansion (PWE) method and the mixed variational technique are combined for the fast eigenvalue computations of arbitrarily com…
3-D phononic crystals with ultra-wide band gaps
Yan Lu, Yang Yang, James K. Guest +1
In this paper gradient based topology optimization (TO) is used to discover 3-D phononic structures that exhibit ultra-wide normalized all-angle all-mode band gaps. The challenging…