On vibration mitigation and energy harvesting of a non-ideal system with autoparametric vibration absorber system

Félix, Jorge Luis Palacios; Balthazar, José Manoel; Rocha, Rodrigo Tumolin; Tusset, Ângelo Marcelo; Janzen, Frederic Conrad

doi:10.1007/s11012-018-0881-8

Cited by 25 publications

(4 citation statements)

References 39 publications

(48 reference statements)

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“…Nonlinear behaviors in portal frames, such as the saturation phenomenon, have been reported due to the dominant quadratic nonlinearities [42]- [48]. Other works also reported nonlinear phenomena due to dominant quadratic nonlinearities in different compound structures [37], [39], and [47]- [49]. These studies demonstrated the importance of proper modeling with analytical and numerical techniques to understand their complex behavior.…”

Section: Introductionmentioning

confidence: 94%

Dynamics Characterization of a U-Shaped Micro-Resonator Portal Frame

Rocha

Alcheikh

Khan

et al. 2020

J. Microelectromech. Syst.

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We present a study of the natural (resonance) frequencies of a tunable in-plane Microelectromechanical portal frame (U-shape) under DC electrostatic loads. The structure is designed and fabricated to excite the in-plane anti-symmetric (sway, first) and the symmetric (second) modes. Experimental results show high tunability of the resonance frequencies of both modes due to the electrostatic forces. Finite element simulations show good agreement with the experimental measurements. Further simulations are presented for the tunability of the natural frequencies of other higher-order modes using various electrode configurations. Frequency-response curves are presented for pure AC actuation of the first two modes showing strong nonlinear softening behavior due to the geometric nonlinearities of the portal frame. [2020-0269] Index Terms-Experimental measurements, finite element method, high tunability, micro fabrication, nonlinear dynamics.

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Section: Introductionmentioning

confidence: 94%

Dynamics Characterization of a U-Shaped Micro-Resonator Portal Frame

Rocha

Alcheikh

Khan

et al. 2020

J. Microelectromech. Syst.

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“…In recent years, there has been extensive research into matters regarding non-ideal systems [4,19,18,3,9,2,8]. Dynamic systems often exhibit chaotic behavior, which complicates the task of parametric identification in experimental systems.…”

Section: Introductionmentioning

confidence: 99%

NisI: A Tool for Non-Ideal System Identification

Lima,

Kaster,

Martins

et al. 2024

Preprint

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Non-Ideal System Identification (NisI) is a Python code developed for system identification of non-ideal systems using a single observed state. Non-Ideal System (NIS) exhibits significantly complex dynamic behavior due to the presence of nonlinear and discontinuous equations, resulting in chaotic behavior. Identifying parameters for NIS is more challenging when only certain states of the system are observable. The proposed method in this study uses a Particle Swarm Optimization (PSO) meta-heuristic to minimize the difference between experimental data and a proposed nonlinear model. This code has successfully identified all unknown parameters of the nonideal system in experimental systems.

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“…However, other researchers have placed the absorber parallel to the direction of excitation. The absorber exhibits transverse excitation when the natural frequency of the primary structure is commensurable to the natural frequency of the absorber, commonly in a 2:1 ratio, and quadratic nonlinearities are present [13,14,36,37]. This model has been seen to adequately control a structure while harvesting energy [13] and strong interactions between the primary structure's displacement and the energy harvested [36].…”

Section: Introductionmentioning

confidence: 99%

Insights on the Effects of Magnetic Forces on the Efficiency of Vibration Energy Harvesting Absorbers in Controlling Dynamical Systems

2023

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This study investigates the effects of magnetic constraints on a piezoelectric energy harvesting absorber while simultaneously controlling a primary structure and harnessing energy. An accurate forcing representation of the magnetic force is investigated and developed. A reduced-order model is derived using the Euler–Lagrange principle, and the impact of the magnetic force is evaluated on the absorber’s static position and coupled natural frequency of the energy harvesting absorber and the coupled primary absorber system. The results show that attractive magnet configurations cannot improve the system substantially before pull-in occurs. A rigorous eigenvalue problem analysis is performed on the absorber’s substrate thickness and tip mass to effectively design an energy harvesting absorber for multiple initial gap sizes for the repulsive configurations. Then, the effects of the forcing amplitude on the primary structure absorber are studied and characterized by determining an effective design of the system for a simultaneous reduction in the primary structure’s motion and improvement in the harvester’s efficiency.

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On vibration mitigation and energy harvesting of a non-ideal system with autoparametric vibration absorber system

Cited by 25 publications

References 39 publications

Dynamics Characterization of a U-Shaped Micro-Resonator Portal Frame

Dynamics Characterization of a U-Shaped Micro-Resonator Portal Frame

NisI: A Tool for Non-Ideal System Identification

Insights on the Effects of Magnetic Forces on the Efficiency of Vibration Energy Harvesting Absorbers in Controlling Dynamical Systems

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