Eventos Anais de eventos
DINAME 2023
XIX International Symposium on Dynamic Problems of Mechanics
Dynamics of pendula base-excited system for wave energy harvesting application
Submission Author:
Alicia Terrero-Gonzalez , United Kingdom , United Kingdom
Co-Authors:
Alicia Terrero-Gonzalez, Marian Wiercigroch
Presenter: Alicia Terrero-Gonzalez
doi://10.26678/ABCM.DINAME2023.DIN2023-0058
Abstract
The vast wave energy potential has positioned Wave Energy Converters (WEC) as emerging technologies; therefore, this study presents a novel two-pendula device that will be able to harvest energy from pendula rotatory motions when harmonically excited by sea waves. The dynamics of a vertical harmonically excited pendula system, when coupled though an elastic base, is investigated to limit the system parameters which lead to pendula rotatory motions. System parameters, such as wave frequency and amplitude, and the difference in pendula lengths (included as parameter mismatch) are constrained to define ranges where pendula rotations exist. Bifurcation analysis of the dynamical system and one-parameter continuation studies are performed with the computational tool ABESPOL, developed at the Centre for Applied Dynamics Research (CADR) at the University of Aberdeen, to find stability ranges of parameters for pendula rotations. The dynamic studies shown the complexity of the system with coexistence between pendula antiphase, phase rotatory motions and pendula oscillations. To reach the desired attractors several basins of attraction are computed to find optimum system initial conditions.
Keywords
Pendula system, rotations, Bifurcation analysis, energy harvesting
