Abstract
In this study a method for simultaneous energy harvesting via friction-induced vibration and vibration reduction is proposed and implemented by sandwiching a piezoelectric patch between two layers of elastic damping components. A test bench that provides good repeatability and generates friction-induced vibration is developed. The experimental results show that the elastic damping components significantly suppress friction-induced vibration. The fluctuating voltage signals indicated the feasibility of the proposed approach for energy harvesting via friction-induced vibration. Several parallel grooves are fabricated on the surface of the elastic damping components to investigate the influence of damping components with different structures on the vibration reduction and energy recovery performance. The results show that the grooved damping components provide a greater reduction in the vibration level of the system than the smooth damping components, but the voltage signals are also weaker. Numerical analysis are performed in ABAQUS 6.14. The unstable mode shape shows that the elastic damping components and piezoelectric patch produce relatively large deformation, demonstrating the feasibility of the proposed energy harvesting approach. The results obtained from the implicit dynamic analysis are identical to the experimental results. Therefore, the implicit dynamic analysis is used to provide some reasonable explanations for the experimental phenomena.
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