Vibration suppression of multi-frequency excitation using cam-roller nonlinear energy sink

This paper discusses the application of a cam-roller nonlinear energy sink (CRNES) to suppress the vibrations induced by multi-frequency excitation. The universal equations of the primary system with the NES are established, and the dynamic characteristics of the coupled system are analyzed when the...

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Bibliographic Details
Published in:Nonlinear dynamics 2023-07, Vol.111 (13), p.11939-11964
Main Authors: Dou, Jinxin, Yao, Hongliang, Li, Hui, Cao, Yanbo, Liang, Shengji
Format: Article
Language:English
Subjects:
Automotive Engineering
Cantilever beams
Classical Mechanics
Control
Dynamic characteristics
Dynamical Systems
Engineering
Excitation
Mechanical Engineering
Optimization
Original Paper
Vibration
Vibration control
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Summary:This paper discusses the application of a cam-roller nonlinear energy sink (CRNES) to suppress the vibrations induced by multi-frequency excitation. The universal equations of the primary system with the NES are established, and the dynamic characteristics of the coupled system are analyzed when the frequency coefficients are equal and unequal. Then, the structure and principles of the CRNES are introduced and applied to a cantilever beam system. On this basis, an optimization strategy for the CRNES is proposed under the condition of considering the suppression performance of each peak. By designing the raceway with optimal parameters of the CRNES, a customized nonlinear force is obtained to suppress the vibration caused by multi-frequency excitation. And also, the vibration suppression performance of the CRNES is evaluated by numerical calculation when the excitation amplitudes and frequency coefficients are changed. Finally, the experimental tests are carried out. The results proved that the vibrations induced by multi-frequency excitation containing different harmonic components can be effectively reduced by the CRNES, and the vibration suppression percentage is above 88.84% in simulations and 67.85% in experiments.
ISSN:0924-090X
1573-269X
DOI:10.1007/s11071-023-08477-9