Prof. Sondipon Adhikari Profile

Prof. Sondipon Adhikari

Chair of Aerospace Engineering at Swnasea Univ

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Publications (7)

Proceedings Article | 20 April 2022 Presentation + Paper

Voltage modulation of elastic properties of asymmetric hybrid lattice structure

Amanpreet Singh, Tanmoy Mukhopadhyay, Sondipon Adhikari, Bishakh Bhattacharya

Proceedings Volume 12043, 120430M (2022) https://doi.org/10.1117/12.2612747

KEYWORDS: Modulation, Vibration isolation, Structural design, Sensors, Piezoelectric effects

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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 | 16 April 2016 Presentation + Paper

Mass and rotary inertia sensing from vibrating cantilever nanobeams

S. Adhikari, H. Haddad Khodaparast

Proceedings Volume 9802, 98020E (2016) https://doi.org/10.1117/12.2222116

KEYWORDS: Sensors, Mechanics, Carbon nanotubes, Nanosensors, Electromagnetic simulation, Oscillators, Resonators, Mechanical sensors, Carbon, Particles

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Proceedings Article | 15 April 2016 Paper

Vibration suppression in MEMS devices using electrostatic forces

Hamed Haddad Khodaparast, Hadi Madinei, Michael Friswell, Sondipon Adhikari

Proceedings Volume 9799, 979917 (2016) https://doi.org/10.1117/12.2222069

KEYWORDS: Microelectromechanical systems, Electrodes, Vibration isolation, Systems modeling, Optimization (mathematics), Vibration control, Radon, Nonlinear control, Complex systems, Numerical simulations, Heterojunctions

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Proceedings Article | 27 April 2011 Paper

Analysis of magnetopiezoelastic energy harvesters under random excitations: an equivalent linearization approach

S. F. Ali, S. Adhikari, M. I. Friswell

Proceedings Volume 7977, 79770N (2011) https://doi.org/10.1117/12.880437

KEYWORDS: Energy harvesting, Complex systems, Stochastic processes, Sensors, Alternate lighting of surfaces, Systems modeling, Numerical analysis, Resistance, Numerical simulations, Capacitance

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Proceedings Article | 31 March 2010 Paper

Wave propagation and structural dynamics in graphene nanoribbons

F. Scarpa, M. Ruzzene, S. Adhikari, R. Chowdhury

Proceedings Volume 7646, 76461A (2010) https://doi.org/10.1117/12.847016

KEYWORDS: Graphene, Wave propagation, Structural dynamics, Performance modeling, Nanosensors, Biosensors, Sensors, Current controlled current source, Nanostructures, Electronics

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Proceedings Article | 17 March 2006 Paper

The analysis of distributed systems with nonlocal damping

Yongjun Lei, Michael Friswell, Sondipon Adhikari

Proceedings Volume 6169, 61690V (2006) https://doi.org/10.1117/12.658025

KEYWORDS: Finite element methods, Matrices, Distributed computing, Chemical elements, Systems modeling, Seaborgium, Aerospace engineering, Motion models, Mathematical modeling, Dynamical systems

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Showing 5 of 7 publications

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