Work

Design of resonant elastodynamic metasurfaces to control S Lamb waves using topology optimization

Year: 2022

Type: article

Abstract: Control of guided waves has applications across length scales ranging from surface acoustic wave devices to seismic barriers. Resonant elastodynamic metasurfaces present attractive means of guided wave control by generating frequency stop-bandgaps using local resonators. This work addresses the systematic design of these resonators using a density-based topology optimization formulated as an eigenfrequency matching problem that tailors antiresonance eigenfrequencies. The effectiveness of our systematic design methodology is presented in a case study, where topologically optimized resonators are shown to prevent the propagation of the S0 wave mode in an aluminum plate.

Source: JASA Express Letters

DOI: 10.1121/10.0015123

Authors: Daniel Giraldo Guzman, Lalith Sai Srinivas Pillarisetti, Sashank Sridhar, Cliff J. Lissenden, Mary Frecker, Parisa Shokouhi

Institution: Pennsylvania State University

Language: English

Topic: Acoustic Wave Phenomena Research

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funder: National Science Foundation

Award: Meta-Surface Design Optimization for Controlling the Surface Waves Propagation