Mr. Vivek Gupta Profile

Vivek Gupta

at Indian Institute of Technology (IIT) Kanpur

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Publications (6)

Proceedings Article | 28 April 2023 Presentation + Paper

Wave propagation study in metamaterial sandwich structure with periodically inserted hourglass resonators

Vivek Gupta, Amanpreet Singh, Bishakh Bhattacharya

Proceedings Volume 12483, 1248309 (2023) https://doi.org/10.1117/12.2658496

KEYWORDS: Wave propagation, Metamaterials, Resonators, Matrices, Materials properties, Vibration, Tunable metamaterials

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Proceedings Article | 28 April 2023 Presentation + Paper

Dispersion characteristics of a ZPR hourglass lattice structure

Amanpreet Singh, Vivek Gupta, Bishakh Bhattacharya

Proceedings Volume 12483, 1248305 (2023) https://doi.org/10.1117/12.2658349

KEYWORDS: Dispersion, Resonators, Wave propagation, Oscillators, Metamaterials, Materials properties, Elasticity, Acoustic waves, Vibration

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Proceedings Article | 20 April 2022 Poster + Presentation + Paper

Interface modes in topologically protected edge states using hourglass based metastructures

Harsh Mirani, Vivek Gupta, Sondipon Adhikari, Bishakh Bhattacharya

Proceedings Volume 12043, 120431E (2022) https://doi.org/10.1117/12.2630931

KEYWORDS: Interfaces, Metamaterials, Acoustics, Wave propagation, Crystals, Mirrors, Signal attenuation, Physics, Numerical simulations, Energy harvesting

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Proceedings Article | 20 April 2022 Presentation + Paper

Dispersion analysis of periodic hourglass-shaped metamaterials for wave propagation

Vivek Gupta, Rajendra Kumar Munian, Bishakh Bhattacharya

Proceedings Volume 12043, 120430B (2022) https://doi.org/10.1117/12.2612976

KEYWORDS: Metamaterials, Crystals, Wave propagation, Spherical lenses, Signal attenuation, Transmittance, Scattering, Wave propagation interference, Resonators, Oscillators

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Proceedings Article | 19 May 2020 Presentation + Paper

Locally resonant mechanical dome metastructures for bandgap estimation

Vivek Gupta, Sondipon Adhikari, Bishakh Bhattacharya

Proceedings Volume 11376, 1137626 (2020) https://doi.org/10.1117/12.2558931

KEYWORDS: Wave propagation, Metamaterials, Vibration control, 3D printing, Mathematical modeling

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In this work, the vibration transmissibility behavior of novel dome shaped auxetic structures with different cellular configurations are simulated using Abaqus 6.14 and subsequently studied experimentally. The dynamic behavior of domes and hourglass shape auxetic structures are studied within the frequency bandwidth of 5-500 Hz by using base excitation technique. The auxetic samples are subjected to broadband excitation at low dynamic strain, followed by sine sweep around the resonance of the system. The dynamic and modal behaviors are experimentally analyzed by using 3D Laser Doppler Vibrometer. The system is shown to develop specific wave propagation and attenuation bands, outline of which is important for developing strategies for damping/energy harvesting. Further, analysis has been carried out to analyze the mechanical wave propagation behavior when the system is subjected to broadband excitation frequency at low dynamic strains. Here, we have arranged a large periodic repeating units of hourglass shape auxetics with lumped mass inside it placed at the center. The equivalent spring-mass-damper mechanical circuit has been developed for the shake of simplifying our system. The Non-linear stiffness of hourglass structure depend upon constitutive cellular cells i.e. auxetic, regular honeycomb and plane, which is evident for getting broader bandgap formation than the linear one. The lumped mass is considered here as locally resonating metamaterial enabling low-frequency vibration attenuation. Furthermore, the analysis is being done for bandgap expressions depending upon the added mass ratio and target frequency. Further study is proposed for attenuation and transmission band analysis to steer the waves which roots the idea of vibration sink, in which we can damp the mechanical waves effectively at a specific location. The Auxetic meta-materials are envisaged to have a significant role in wave attenuation and wave steering, and can be used effectively for vibration control.

Proceedings Article | 21 March 2019 Presentation + Paper

Wave propagation in auxetic mechanical metamaterial: Bloch formalism for various boundary conditions

Vivek Gupta, Anwesha Chattoraj, Arnab Banarjee, Bishakh Bhattacharya

Proceedings Volume 10967, 109671K (2019) https://doi.org/10.1117/12.2514266

KEYWORDS: Wave propagation, Matrices, Metamaterials, Quantum mechanics, Signal attenuation, Finite element methods, Computer simulations, Mechanical engineering, Modal analysis, Vibration control

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Showing 5 of 6 publications

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