Elimination of multimode resonances of composite plate by inertial nonlinear energy sinks

• Published in: Mechanical systems and signal processing 2020-01, Vol.135, p.106383, Article 106383
• Main Authors: Chen, Hong-Yan, Mao, Xiao-Ye, Ding, Hu, Chen, Li-Qun
• Format: Article
• Language: English
• Subjects: Bending vibration; Composite plate; Composite structures; Design parameters; Galerkin method; Harmonic balance method; Inerter; Nonlinear energy sink; Nonlinear vibration; Optimization; Plates (structural members); Resonance; Resonant frequencies; Vibration control; Vibration elimination; Weight reduction
• ISSN: 0888-3270; 1096-1216
• DOI: 10.1016/j.ymssp.2019.106383

•Multimode resonances of composite plates are absorbed by inertial nonlinear absorbers.•Nonlinear solution is obtained approximately analytically and numerically.•A lightweight solution is proposed for wide-band suppressing vibration of plates. Bending vibration of the elastic structure has many resonance modes. Especially, the composite plate structure has many low frequency modes. Therefore, devices capable of achieving wide-band vibration suppression are required. Multimode resonances elimination of composite plates by an inertial nonlinear energy sink (NES) is proposed for the first time. Different with the traditional NES, the mass of the absorber in the present work is replaced by an inerter to reduce the weight of the attached device. The response of the plate is investigated by the Galerkin discretization together with the harmonic balance method (HBM). The gravity effect of the mass of the traditional NES is presented. It shows the benefits of the inertial NES without affecting the resonant frequency of the primary system. By comparing the resonance with and without the NES, the proposed device is certified that it has good efficiency in vibration eliminating for both low-order and high-order resonance. It finds that the mass of the inertial NES, which can achieve the effective suppression effect, is relatively tiny. The parameter effect of the NES is discussed fully to achieve the optimum design. Optimal parameters on the resonance response of different modes are not identical. This paper will provide a good reference for vibration elimination of multimode resonance of plates.