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- Title
An electromagnetic vibro-impact nonlinear energy sink for simultaneous vibration suppression and energy harvesting in vortex-induced vibrations.
- Authors
Li, Haiqin; Li, Shaohua; Ding, Qian; Xiong, Huai; Kong, Xianren
- Abstract
An electromagnetic vibro-impact nonlinear energy sink (EM-VINES) is proposed in the application of vortex-induced vibration, for both purpose of vibration suppression and energy harvesting. The considered system consists of a cylinder-like bluff body subject to an oncoming flow, coupled to a magnet attachment moving in coil of gap enclosure. The fluid–structure interaction is treated using the classical Van der Pol oscillator model, and the non-smooth dynamics is formulated in a measure differential complementarity problem adapted with a Moreau–Jean time integration scheme. Comprehensive analyses are then conducted concerning the targeted energy transfer mechanism, as well as the internal competition of the energy flow. A performance indicator is defined over the lock-in region, to obtain the optimal balance between vibration suppression and energy harvesting. It is found that when the system is working in a strongly modulated regime with less than 2 impacts per cycle, a fast-scale targeted energy transfer could be activated over the whole lock-in region, making the EM-VINES behave efficiently for both vibration suppression and energy harvesting in the application of vortex-induced vibrations.
- Subjects
ENERGY harvesting; TIME integration scheme; FLUID-structure interaction; COMPLEMENTARITY constraints (Mathematics); ENERGY transfer
- Publication
Nonlinear Dynamics, 2024, Vol 112, Issue 8, p5919
- ISSN
0924-090X
- Publication type
Article
- DOI
10.1007/s11071-024-09380-7