Research
My research asks how periodic and locally resonant structures can be designed to control waves and isolate vibration, particularly at low frequencies.
Current focus
Low-frequency vibration isolation in sandwich structures (IISc Bengaluru). Under my ANRF National Postdoctoral Fellowship, I am studying wave propagation in metamaterial-based sandwich structures for aerospace applications.
Research directions and interests
- Extending metamaterial design for practical vibration control.
- Exploring metamaterial concepts for energy harvesting and structural health monitoring.
- Disordered metamaterials and Anderson localisation.
- Mechanical computing using metamaterials.
Foundations from my published work
Analytical theory of bandgaps
Closed-form expressions for attenuation peaks and band boundaries, and the mechanism behind double attenuation peaks.
- Closed-form solutions for general monocoupled systems, Journal of Sound and Vibration (2022)
- Double attenuation peaks with simultaneous negative mass and stiffness, Physics Letters A (2022)
Rigid-elastic metabeams and relative resonance
Combining rigid and elastic segments to shape flexural waves and isolate vibration.
- Flexural wave propagation in rigid elastic combined metabeam, Journal of Vibration and Acoustics (2023)
- Vibration isolation by relative resonance, Journal of Sound and Vibration (2024)
Nonlinear and damped wave propagation
The effect of nonlinear stiffness and damping on dispersion, using multiple-scales analysis.
- Damped beam on cubic nonlinear springs, Physical Review E (2024)
Methods
- Analytical: Bloch–Floquet analysis, multiple-scales perturbation, transfer matrix and spectral element methods, uncertainty quantification
- Numerical: MATLAB, Python, COMSOL Multiphysics, Mathematica
- Experimental: laser Doppler vibrometry, shaker testing, high-speed imaging, 3D-printed prototypes, LabVIEW data acquisition