Vibration suppression and energy absorption of plates in subsonic airflow using an energy harvester enhanced nonlinear energy sink

Abstract

In this paper, a nonlinear energy sink (NES) and a giant magnetostrictive-piezoelectric (GMP) energy harvester (NES-GMP) are investigated to suppress the nonlinear aeroelastic responses and to absorb the mechanical energy of an embedded plate interacting with external subsonic airflow. The analytical model of the embedded plate attaching the NES-GMP is established by using the Hamilton’s principle based on the Kirchhoff plate theory and incompressible subsonic aerodynamic model. The natural frequencies of the plate with the NES-GMP and with the NES are analyzed by solving the generalized eigenvalue problems. The global amplitude-frequency responses of the pure plate, the plate with NES, and the plate with NES-GMP are compared to show the vibration suppression effects of the proposed method. Based on the energy analysis, the energy transfer mechanisms of the plate with the NES-GMP are studied. The results reveal that the input energy of the NES-GMP converts into the strain energy by the Terfenol-D layer and then transforms into the electric energy by the piezoelectric layer. Furthermore, numerical simulations also indicate that the maximum harvested energy is obtained when the airflow velocity approaches the critical divergence flow velocity of the plate, and the most effective harvesting installation position is in a specific annular region near the edge of the plate.

Design, Optimization, and Application of Nonlinear Energy Sink in Energy Harvesting Device

“…Also, the NES mass needs to be controlled at 10-15% of the airfoil mass [174]. The NES-giant magnetostrictive-piezoelectric also performs International Journal of Energy Research well in suppressing nonlinear aeroelastic response and harvesting energy [175]. NES-giant magnetostrictive-piezoelectric has also been applied to the subsonic aeroelastic system, where the energy harvesting performance of the system is affected by periodic motion and instability [176].…”

Random vibration analysis of nonlinear structure with viscoelastic nonlinear energy sink

“…The conclusion demonstrated that NES could immediately restrain the system response during the initial stages of vibration and shock. Furthermore, this control strategy has been extended to practical applications for vibration reduction purposes in recent years, including but not limited to beams (Ahmadabadi and Khadem, 2012; Zhao et al, 2022), energy harvesting (Li et al, 2017; Zhang et al, 2019; Yao and Qiao, 2022), spacecraft (Zhang et al, 2019), airfoil structure (Guo et al, 2013; Lee et al, 2010), turbine motor (Aghayari et al, 2021), and other systems (Bergeot et al, 2017).…”