Open AccessNumerical investigations of bistable piezoelectric cantilever for enhanced energy harvesting
Author(s) -
Mohammed Ali Abdelnaby,
Mohamed S. Shiba,
Shaikh Faruque Ali
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/973/1/012022
Subject(s) - bistability , energy harvesting , cantilever , piezoelectricity , finite element method , materials science , voltage , stiffness , capacitance , magnet , power (physics) , acoustics , mechanical engineering , engineering , structural engineering , physics , optoelectronics , electrical engineering , composite material , electrode , quantum mechanics
Piezoelectric energy harvesting applications have been highly impacted research area recently. Numerical investigations for bistable piezoelectric cantilevers have great importance to understand its dynamic performance. This paper aims to develop comprehensive numerical models to simulate the dynamic response of aunimorph piezoelectric bender under bistability effect for enhanced energy harvesting. To this end, the equivalent stiffness, damping, electromagnetic coupling and capacitance coefficients of a bistable piezoelectric cantilever have been numerically developed. Besides, finite element models are developed to determine the bistability repulsion force between magnets. The resulting simulations are then implemented in an electromechanical model to predict the output voltage and power over a range of load resistance.