Energy Harvesting Study of Piezoelectric Vibration Harvester with Double Parallel Slender Structure

In this paper, we use a cantilevered double parallel slender structure single deformation piezoelectric energy harvester as a model and combine it with the Lamb-Oseen vortex model, where the effect from fluid vortices is used as an external load, and a metal sheet is attached to the free end of the energy harvester for capturing the shear force generated by wind-generated vortices on the double beams model. The closed-form solution of the bending forced vibration of the piezoelectric energy harvester is solved by establishing the relevant model and deriving the equations. Euler- Bernoulli beam assumptions are used to develop a coupled electromechanical model for the harvester with an intermediate spring layer and a transverse damping is considered, and Green's functions and Laplace transform techniques are used to solve the vibration equations for the coupled piezoelectric vibration system. By solving for the voltage as a function of Green's functions and using Matlab software, we can obtain the functional relationship between the voltage of the harvester and the elastic coefficient of the interlayer and the position of the metal plate setting.