Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
A New Multi-objective Optimization Algorithm inspired by Lichtenberg Figures Applied to Isogrid Strucures
Submission Author:
João Luiz Junho Pereira , MG
Co-Authors:
João Luiz Junho Pereira, Matheus Brendon Francisco, Sebastião Simoes Cunha Jr, Guilherme Ferreira Gomes
Presenter: João Luiz Junho Pereira
doi://10.26678/ABCM.COBEM2021.COB2021-0037
Abstract
Classic optimization methods had their importance in the past, but they lost space for new algorithms that emerged with the advancement of computing, better able to deal with a greater number of variables, objectives and nonlinearities. Evolutionary and meta-heuristic algorithms are exponents in the literature as the main tool for solving complex multi-objective problems. This work presents the first multi-objective meta-heuristic registered as a computer program in Brazil. The Multi-objective Lichtenberg Algorithm is an optimizer inspired by the physical phenomenon of radial intra-cloud lightning and Lichtenberg Figures. This algorithm will be applied to isogrid structures and compared with one of the most used meta-heuristics in the literature: the genetic algorithm. The present work aims to find the optimal design parameters for the lattice structure in order to minimize the Tsai-Wu failure index and the mass of the structure under compression loads. A Response Surface Methodology (RSM) was used for the purpose of setting up a series of experiments for adequate predictions of the responses and the generated models. The Brazilian meta-heuristic proved to be powerful for solving complex multi-objective problems.
Keywords
Multi-Objective Optimization, Meta-heuristics, Lichtenberg Figures, Isogrid Strucutres
