Nonlinear analysis of compensated asymmetric energy harvester
Résumé
Nonlinear vibration energy harvesting can convert kinetic energy into electricity at a broadband frequency. However, asymmetries can arise during a manufacturing process and drastically impair energy generation. Therefore, this work numerically investigates the effect of asymmetry on a bistable energy harvester using the bifurcation diagram and the basins of attractions proposed based on tests 0-1 for chaos. We introduce the asymmetries using a quadratic term on the restoring force and an external force due to the slope angle of the plane where the system is attached. A particular condition is established that an asymmetric term compensates the effect of the other one. The results indicated that although the asymmetric conditions the dynamic behavior becomes symmetric, and the negative effect of asymmetry can be avoided, enhancing the energy harvesting process.
Origine : Fichiers produits par l'(les) auteur(s)