27.04.2022 EH Workshop in University of Southampton, Wednesday 12:00-13:15, Building 5
As a part of ehDialog project there were organized international workshops during which lectures and experiments have been carried out.
Lectures:
- Prof. Damian Gaska (Silesian University of Technology) “Nonlinear effects in vibration energy harvesting”
Abstract:
Prof. Damian Gaska (Silesian University of Technology) “Nonlinear effects in vibration energy harvesting”
The presentation will cover issues related to the results of model tests of various energy harvester constructions in which the energy potential is characterized by appropriately connected elastic and dissipative elements with a variable configuration. Numerical simulation experiments were carried out to assess the impact of physical properties and initial conditions on the occurrence of coexisting solutions. To be able to choose the best solution in terms of energy efficiency, studies considering the issue related to the assessment of the disturbing impulse for the possibility of correction of the phase trajectory will be also presented. The presentation will be based on the already published results as well as current model research.
Prof. Grzegorz Litak (Lublin University of Technology) “Synchronization in a vibration energy harvester composed of two mechanical resonators”
Abstract:
Prof. Grzegorz Litak (Lublin University of Technology) “Synchronization in a vibration energy harvester composed of two mechanical resonators”Energy harvesting by coupled mistuned oscillators is analyzed. The ambient energy source to the system is considered in the form of harmonic base excitations. High-energy orbit harvesting by bifurcation diagrams, phase portraits, and Fourier spectra. The results indicate various periodic, quasiperiodic and also chaotic solutions. Finally, cross recurrence plots are applied to show synchronization states in a connection of the total power output.