engleski

Numerical modelling of piezoelectric vibration energy scavenging bimorphs

A finite element model (FEM) analysis of the coupled electromechanical behaviour of bimorph piezoelectric energy scavengers with varying element types and mesh densities is performed in this work. At first a 3D modal analysis is undertaken to validate the eigenfrequencies and eigenmodes obtained via the uncoupled analytical modal model. A harmonic dynamic analysis is performed next so as to evaluate the voltage output of the system under dynamic loading. Finally, a full transient analysis is done. The validity of the results is enhanced by varying the applied resistive loads.

energy scavenging ; piezoelectric bimorphs ; FEM simulation

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