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Estudo de Sensibilidade do Algoritmo de Colônia de Vagalumes para um Problema de Engenharia Envolvendo Dimensionamento de Treliças
Abstract
A treliça é uma estrutura triangular rígida, com resistência aos esforços normais, podendo ser utilizada em telhados, mezaninos, torres de energia de telecomunicações e pontes. Logo é possível armar que esse sistema estrutural apresenta uma grande relevância no cenário da engenharia de estruturas. Nesta pesquisa é utilizado um método probabilístico de otimização global baseado em inteligência coletiva ou inteligência de enxame, com aplicações promissoras em diversos campos das ciências aplicadas, o Algoritmo de Colônia de Vagalumes (ACV), para determinação do peso mínimo de uma treliça de benchmark. Foi conduzida uma análise de sensibilidade com os parâmetros do algoritmo como: população (Npop), nímero de iterações (Ngen), parâmetro de aleatoriedade α, fator de atratividade β e parâmetro de absorção de luz (γ). A treliça utilizada nos testes foi uma estrutura de benchmark com 10 barras e essa foi otimizada obtendo um valor de peso mínimo em torno de 2284 kg, tal valor quando comparado a outros trabalhos da literatura mostram a efetividade do método adotado nesse trabalho. O software utilizado para as implementações e simulação das treliças foi o MATLAB.
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DOI: https://doi.org/10.5540/tema.2020.021.03.583
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Trends in Computational and Applied Mathematics
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