Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
UNCERTAINTIES ON ADHESIVE LAYER FOR A PLATE STRUCTURE: PASSIVE CONTROL
Submission Author:
Guilherme Silva Prado , MT
Co-Authors:
Guilherme Silva Prado, Heinsten Frederich Leal dos Santos
Presenter: Guilherme Silva Prado
doi://10.26678/ABCM.COBEM2019.COB2019-2387
Abstract
Piezoelectric materials have been extensively studied in recent years for the development of harvesting electromechanical devices. The geometric configuration of the piezoelectric patches and the properties adhesive layer rigidity are variables important for the conversion efficiency of mechanical energy to electric energy. This conversion is provided by an electromechanical coupling between a flexible structure and piezoelectric element. So, this work has as objective to present an analysis in passive damping performance of a plate structure in passive control, including a sensibility study in piezoceramic geometric configuration (length and position) and a study on the influence of parametric uncertainties on the thickness properties and $Young′s$ modulus of adhesive bond strength, based on the expected statistical properties of variables, such as expected nominal value, dispersion and positive. All studies presenting in this paper are applied in first vibration mode. For the passive vibration, control performance is evaluated for an located shunted piezoceramic patches. For the study, it was necessary to design resistance and inductance (shunt circuit) of each circuit to see the displacement in two cases: open circuit and closed circuit. This work presents a study on the influence of parametric uncertainties on the thickness properties and $Young’s$ modulus of adhesive bond strength, based on the expected statistical properties of variables, such as expected nominal value, dispersion and positivity.
Keywords
Piezoelectric materials, Passive Vibration Control, Stochastic Modeling, uncertainty analysis, Genetic Algorithms
