Abstract
Finite element analysis is conducted on a barium calcium zirconate titanate (BCZT) material to investigate its energy harvesting performance at different porosities. Porosities are gradually increased to 25% in steps of 5. BCZT piezoceramics attached to a host cantilever beam in unimorph configuration and subjected to base vibration are considered for the present study. Both and modes are considered. Power is harvested using a load resistance optimized with the structure's natural frequency of vibration. Up to a certain porosity level, an increase in voltage and power is observed in the system. An increment in voltage by ≈95% in mode and ≈119% in mode is observed at 10% porosity. Power increased by 50% in mode and by 53% in mode at 5% porosity compared with the nonporous material.
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