8 papers
Interplay of coupling and forcing: Coherence in a nonlinear delayed oscillator
Mattia Coccolo, Miguel A. F. Sanjuán
Coupled oscillators often experience two distinct influences: an internal input transmitted through coupling from a driver subsystem, and an external periodic forcing applied direc…
Grünwald--Letnikov Memory Truncation in a Fractional Duffing Oscillator: Coherence Loss and Effective Delay Complexity
Mattia Coccolo
We investigate the dynamical and analytical consequences of truncating the Grünwald--Letnikov memory term in a fractional Duffing oscillator. The truncated memory is treated not m…
Transmitted and Storage-Dominated Resonance in Fractionally Damped Unidirectionally Coupled Duffing Oscillators
Messali Rouaida, Mattia Coccolo, Miguel A. F. Sanjuán
This paper investigates resonance transmission in two unidirectionally coupled Duffing oscillators with fractional damping, where the driver is harmonically forced and the receiver…
High-frequency tuning of internal resonance and targeted energy transfer in a Van der Pol oscillator coupled to a nonlinear energy sink
Somnath Roy, Mattia Coccolo, Sayan Gupta +1
Targeted energy transfer (TET) from a Van der Pol oscillator coupled to a nonlinear energy sink (NES) is investigated under the action of a high-frequency external drive, which tun…
Collective vibrational resonance and mode selection in nonlinear resonator arrays
Somnath Roy, Mattia Coccolo, Anirban Ray +1
This article investigates how a uniform high frequency (HF) drive applied to each site of a weakly-coupled discrete nonlinear resonator array can modulate the onsite natural stiffn…
Parametric Autoresonance with Time-Delayed Control
Somnath Roy, Mattia Coccolo, Miguel A. F. Sanjuán
We investigate how a constant time delay influences a parametric autoresonant system. This is a nonlinear system driven by a parametrically chirped force with a negative delay-feed…