Evolutionary Optimization
Mostrando 1-12 de 132 artigos, teses e dissertações.
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1. Strut-and-tie models for linear and nonlinear behavior of concrete based on topological evolutionary structure optimization (ESO)
Resumo A busca por sistemas resistentes representativos para estrutura de concreto requer profundo conhecimento sobre seu comportamento mecânico. Os modelos de bielas e tirantes são procedimentos clássicos utilizados no dimensionamento do concreto armado onde existem concentrações de tensão, as chamadas regiões descontínuas da estrutura. No entanto,
Rev. IBRACON Estrut. Mater.. Publicado em: 2019-02
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2. Evolutionary Design of Engineering Constructions
Abstract The basic information required to utilize one of possible computation tools/algorithms (mainly the evolution strategy) to solve a wide class of real practical engineering optimization problems is presented and discussed in the present paper. The effectiveness of the considered method is demonstrated by the possibility of the use of different form o
Lat. Am. j. solids struct.. Publicado em: 04/06/2018
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3. Photoacoustic-based thermal image formation and optimization using an evolutionary genetic algorithm
Abstract Introduction For improved efficiency and security in heat application during hyperthermia, it is important to monitor tissue temperature during treatments. Photoacoustic (PA) pressure wave amplitude has a temperature dependence given by the Gruenesein parameter. Consequently, changes in PA signal amplitude carry information about temperature varia
Res. Biomed. Eng.. Publicado em: 28/05/2018
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4. Mass and buckling criterion optimization of stiffened carbon/epoxy composite cylinder under external hydrostatic pressure
Abstract In this manuscript, stiffened carbon / epoxy composite cylinders under external hydrostatic pressure will be examined to minimize mass and maximize buckling pressure. The new approach proposed in this paper is single objective optimization of stiffened composite cylindrical shell under external pressure by genetic algorithm (GA) in order to obtain
Lat. Am. j. solids struct.. Publicado em: 23/04/2018
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5. AVALIAÇÃO DE UMA TÉCNICA DE REFORÇO ÓSSEO COM O MÉTODO DE ELEMENTOS FINITOS
RESUMO Objetivos: Avaliar, com o método de elementos finitos (EF), os resultados obtidos com a simulação de queda sobre o trocanter maior, usando a porção proximal de um fêmur sintético, com a finalidade de comparar os valores obtidos antes e após técnica de reforço femoral com cimento de fosfato tricálcico (FT) e polimetilmetacrilato (PMMA). M�
Acta ortop. bras.. Publicado em: 2018-02
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6. Energy Efficient Clustering in Multi-hop Wireless Sensor Networks Using Differential Evolutionary MOPSO
ABSTRACT The primary challenge in organizing sensor networks is energy efficacy. This requisite for energy efficacy is because sensor nodes capacities are limited and replacing them is not viable. This restriction further decreases network lifetime. Node lifetime varies depending on the requisites expected of its battery. Hence, primary element in constructi
Braz. arch. biol. technol.. Publicado em: 23/01/2017
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7. An Implementation of Self-Organizing Maps for Airfoil Design Exploration via Multi-Objective Optimization Technique
ABSTRACT Design candidates obtained from optimization techniques may have meaningful information, which provides not only the best solution, but also a relationship between object functions and design variables. In particular, trade-off studies for optimum airfoil shape design involving various objectives and design variables require the effective analysis t
J. Aerosp. Technol. Manag.. Publicado em: 2016-06
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8. Developing and Multi-Objective Optimization of a Combined Energy Absorber Structure Using Polynomial Neural Networks and Evolutionary Algorithms
Abstract In this study a newly developed thin-walled structure with the combination of circular and square sections is investigated in term of crashworthiness. The results of the experimental tests are utilized to validate the Abaqus/ExplicitTM finite element simulations and analysis of the crush phenomenon. Three polynomial meta-models based on the evolved
Lat. Am. j. solids struct.. Publicado em: 2016
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9. Weldability studies and parameter optimization of AISI 904L super austenitic stainless steel using friction welding
Welding input parameters play a very significant role in determining the quality of a weld joint. The quality of the joint can be defined in terms of mechanical properties, distortion and weld-bead geometry. Generally, all welding processes are employed with the aim of obtaining a welded joint with the desired characteristics. The purpose of this study is to
Mat. Res.. Publicado em: 04/07/2014
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10. Fish swarm optimization algorithm applied to engineering system design
Nowadays, optimization techniques based on the analogy with swarming principles and collective activities of social species in nature have been used in the development of methodologies for solving a variety of real-world optimization problems. In this context, the social behavior of fish colonies has been recently explored to develop a novel algorithm, the s
Lat. Am. j. solids struct.. Publicado em: 2014-01
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11. Cash management policies by evolutionary models: a comparison using the Miller-Orr model
This work aims to apply genetic algorithms (GA) and particle swarm optimization (PSO) to managing cash balance, comparing performance results between computational models and the Miller-Orr model. Thus, the paper proposes the application of computational evolutionary models to minimize the total cost of cash balance maintenance, obtaining the parameters for
JISTEM J.Inf.Syst. Technol. Manag.. Publicado em: 2013-12
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12. Enhanced lipase recovery through RSM integrated differential evolutionary approach from the fermented biomass
The aim of this work was to apply a modeling integrated optimisation approach for a complex, highly nonlinear system for an extracellular lipase extraction process. The model was developed using mutation, crossover and selection variables of Differential Evolution (DE) based on central composite design of Response Surface Methodology. The experimentally vali
Braz. arch. biol. technol.. Publicado em: 2013-10