Parametric Study of Notch Shaped Cantilever Beam for Energy Harvesting

This work explains the design of notched cantilever beam for energy harvesting through parametric study. Conventional cantilever beam with proof mass is compared with half-sine arc-shape notched cantilever beam. The effect of the position, length, and depth of the arc on the performance of the device is studied. Maximum stress, beam bending, frequency, electric output power and surface charge of the two designs are compared. For the designed cantilever beam, results show 9.2% decrease in maximum stress, which translates to about 47.72% increase in harvested power with a slight decrease (2.12 %) in resonant frequency.