Nonlinear vibration energy harvesting-suppressing simulating and experimental research of a two-layer beam system by utilizing a vibration energy harvesting-suppressing module

Abstract

Beams and their coupling structures are inevitably subjected to undesirable vibrations. Investigating vibration harvesting and suppression technologies for beams is crucial for addressing vibration-related issues encountered in engineering applications. This study explores the potential of using nonlinear energy sinks for both harvesting and suppressing the vibration energy of complex beam structures. A novel nonlinear vibration energy harvesting-suppressing module was designed for this purpose, with a coupling nonlinear energy sink as its key component. The experimental investigation, guided by theoretical analysis and the characteristics of the designed module, evaluates the vibration suppression and energy harvesting capabilities of a two-layer beam system. The results indicate that the designed module exhibits notable nonlinear behavior. Theoretical analysis reveals that the vibration energy harvesting-suppressing module can be classified into two types of devices, with their specific operational characteristics, roles, vibration suppression, and energy harvesting effects determined by the parameters of the key component. Experimental findings confirm the feasibility of the module, demonstrating its ability to simultaneously suppress and harvest vibration energy from the two-layer beam system. In conclusion, this research presents a novel vibration energy harvesting-suppressing module, offering an innovative solution for integrated vibration suppression and energy capture in engineering applications.