Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Parameter identification and model updating of thin plate structure with rectangular cut based on iterative methods and optimization
Submission Author:
Gabriel Kozikoski , MG
Co-Authors:
Gabriel Kozikoski, Henrique Silveira
Presenter: Gabriel Kozikoski
doi://10.26678/ABCM.COBEM2021.COB2021-0882
Abstract
To ensure an ideal engineering project it is necessary to realize different studies and tests in the structures, avoiding in many cases, noise, vibration and failure of aircraft, vehicles, industrial machines and equipment. Irregular plates are present in parts of these structures and it is often necessary to predict the dynamic behavior, understanding the system and possibly adjust them according to the application. Through a representation of the finite element method (FEM), it is possibly to construct a theoretical model of a plate with rectangular cut, identifying and adjusting the parameters of the model from a experimental model, as initially there is no good correlation due to imperfections in the geometry, material properties and boundary conditions. Furthermore, it is very important in this process to propose a damping model and identify its parameters, in such a way that represents the real behavior of the flexible structure. This paper presents and discusses the use of the Ewins-Gleeson method in the parameter identification of the model and makes a comparison between the particle-swarm-optimization (PSO) and differential evolution (DE) algorithms in the model updating process, discussing the main advantages of both formulations in the theoretical-experimental validation, with the experimental data being simulated from the FEM model.
Keywords
Differential Evolution, Particle Swarm Optimization, Iterative Methods, Ewins-Glesson
