Eventos Anais de eventos
MECSOL 2019
7th International Symposium on Solid Mechanics
Influence of the support condition perturbations in the process of parameter identification using the Boundary Element Method
Submission Author:
Hugo Luiz Oliveira , SP
Co-Authors:
Edson Denner Leonel
Presenter: Hugo Luiz Oliveira
doi://10.26678/ABCM.MECSOL2019.MSL19-0024
Abstract
In the process of model parameter identification, the structural boundary conditions play a major role. Depending on the assumed support conditions, the searched parameter can change drastically. This fact can become problematic when particular experiments are designed for validation purposes. The present study proposes a numerical formulation for better understanding the effects that slight support perturbations can cause. For this end, a model updating scheme is proposed as an optimization problem based on the Constitutive Relation Error theory. The forward mechanical problem relies on the Boundary Element Method. Then, a series of controlled perturbations is utilized to verify the detrimental effects on the cost function that guides the identification. The preliminary results show two kind of perturbations with distinct impacts. One of them does not affect the identification process. The other one can degenerate completely the convergence process.
Keywords
Boundary Element Updating Model, Constitutive Relation Error, boundary conditions, Optimization
