Engineering and Technology

Exploring the dynamics of hourglass shaped lattice metastructures

V. Gupta, S. Adhikari, et al.

Discover groundbreaking research by Vivek Gupta, Sondipon Adhikari, and Bishakh Bhattacharya on a unique hourglass-shaped lattice metastructure that promises enhanced tunability and improved dynamic response. This innovative study introduces six classes of metastructures and investigates their mechanical characteristics, paving the way for advanced vibration suppression solutions.

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Index

Abstract

This paper explores a novel hourglass-shaped lattice metastructure, combining two oppositely oriented coaxial domes, for enhanced customizability and tailored dynamic response. Six new classes of metastructures are developed using solid shells, regular honeycomb lattices, and auxetic lattices. Numerical simulation, analytical modeling, 3D printing, and experimental testing evaluate their mechanics and nonlinear behavior. The study reveals lattice-dependent frequency response and damping, paving the way for hourglass-based oscillators in tunable metamaterials for broadband vibration suppression and wave attenuation.

Publisher

Scientific Reports

Published On

Dec 01, 2020

Authors

Vivek Gupta, Sondipon Adhikari, Bishakh Bhattacharya

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