MATEC Web of Conferences
Volume 16, 2014CSNDD 2014 - International Conference on Structural Nonlinear Dynamics and Diagnosis
|Number of page(s)||6|
|Section||Analytical method in nonlinear dynamics|
|Published online||01 September 2014|
Nonlinear Dynamics and Bifurcation Behavior of a 2-DOF Spring Resonator with End Stopper for Energy Harvesting
1 Universitat Rovira i Virgili, Spain
2 University College Dublin, Ireland
3 Alcatel-Lucent, Bell Labs, Dublin, Ireland
4 Universitat Politècnica de Catalunya, Spain
a e-mail: firstname.lastname@example.org
In this paper, the model of a two-degree-of-freedom (2-DOF) spring resonator with end stopper for an energy harvesting application is presented. Then we characterize its nonlinear dynamical behavior by numerical simulations when some suitable parameters are varied. The system is formed by two resonators subject to external vibrational excitation and with an end stopper. We present the continuous time dynamical model of the system in the form of a switched fourth order differential equation. Harmonic vibrations are considered as the main ambient energy source for the system and its frequency response representing the RMS value of the displacement is first computed. The dynamical behavior is unveiled by computing state-space trajectories, timedomain series and FFT spectra and frequency response as the excitation amplitude is varied.
© Owned by the authors, published by EDP Sciences, 2014
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