Search Results - "Leandro Fleck"

Search group algorithm: A new metaheuristic method for the optimization of truss structures by Gonçalves, Matheus Silva, Lopez, Rafael Holdorf, Miguel, Leandro Fleck Fadel

“…•A new metaheuristic algorithm is proposed, the Search Group Algorithm (SGA).•The SGA is successfully applied for the structural optimization of trusses.•The…”
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Shape and size optimization of truss structures considering dynamic constraints through modern metaheuristic algorithms by Miguel, Letícia Fleck Fadel, Fadel Miguel, Leandro Fleck

“…► Mass optimization on shape and sizing with multiple natural frequency constraints. ► This is a highly nonlinear dynamic optimization problem. ► It is solved…”
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A performance measure approach for risk optimization by Torii, André Jacomel, Lopez, Rafael Holdorf, Beck, André Teófilo, Miguel, Leandro Fleck Fadel

“…In recent years, several approaches have been proposed for solving reliability-based design optimization (RBDO), where the probability of failure is a design…”
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Weight estimation on static B-WIM algorithms: A comparative study by Carraro, Felipe, Gonçalves, Matheus Silva, Lopez, Rafael Holdorf, Miguel, Leandro Fleck Fadel, Valente, Amir Mattar

“…•Different methods were theoretically analyzed by their statistical background.•These methods were evaluated experimentally using real-world data signals.•The…”
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Risk optimization using the Chernoff bound and stochastic gradient descent by Carlon, André Gustavo, Kroetz, Henrique Machado, Torii, André Jacomel, Lopez, Rafael Holdorf, Miguel, Leandro Fleck Fadel

“…This paper proposes a stochastic gradient based method for the solution of Risk Optimization (RO) problems. The proposed approach approximates the probability…”
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Robust Optimum Design of Multiple Tuned Mass Dampers for Vibration Control in Buildings Subjected to Seismic Excitation by Miguel, Leandro Fleck Fadel, Miguel, Letícia Fleck Fadel, Ontiveros-Pérez, Sergio Pastor, Vellar, Luciara Silva

“…Passive energy devices are well known due to their performance for vibration control in buildings subjected to dynamic excitations. Tuned mass damper (TMD) is…”
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Multimodal size, shape, and topology optimisation of truss structures using the Firefly algorithm by Miguel, Leandro Fleck Fadel, Lopez, Rafael Holdorf, Miguel, Letícia Fleck Fadel

“…► Multimodal size, shape, and topology optimisation of trusses. ► Efficient single-stage Firefly based algorithm. ► Discrete and continuous variables at the…”
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Optimization of transmission towers considering the bolt slippage effect by de Souza, Rafael Rodrigues, Fadel Miguel, Leandro Fleck, Kaminski-Jr, João, Lopez, Rafael Holdorf, Torii, Andre Jacomel

“…•Nonlinear bolt slippage effect is included in the optimization through a two-stage based procedure.•The optimization is applied to a real 230 kV TLT submitted…”
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Methodology for the simultaneous optimization of location and parameters of friction dampers in the frequency domain by Miguel, Letícia Fleck Fadel, Miguel, Leandro Fleck Fadel, Lopez, Rafael Holdorf

“…It is well known that the use of passive energy dissipation devices such as friction dampers reduces the dynamic response of structures subjected to…”
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Topology design recommendations of transmission line towers to minimize the bolt slippage effect by de Souza, Rafael Rodrigues, Fadel Miguel, Leandro Fleck, Kaminski, João, Lopez, Rafael Holdorf

“…•Topology design recommendations are able to decrease the bolt slippage effect.•The investigated and recommended topologies are usually employed by the…”
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Monte Carlo integration with adaptive variance selection for improved stochastic efficient global optimization by Carraro, Felipe, Lopez, Rafael Holdorf, Miguel, Leandro Fleck Fadel, Torii, André Jacomel

“…In this paper, the minimization of computational cost on evaluating multidimensional integrals is explored. More specifically, a method based on an adaptive…”
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Second-order Krylov subspaces for model order reduction of buildings subjected to seismic excitation by Lenzi, Marcos Souza, Fadel Miguel, Leandro Fleck, Lopez, Rafael Holdorf, de Salles, Humberto Brambila

“…Determining the dynamic response to earthquakes is critical for designing building structures in seismic zones. Nevertheless, a massive computational burden is…”
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Correction to: A performance measure approach for risk optimization by Torii, André Jacomel, Lopez, Rafael Holdorf, Beck, André Téofilo, Miguel, Leandro Fleck Fadel

“…The original article unfortunately contains error in one of the equations and the results of the last example. This is also to emphasize that these corrections…”
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Optimum design of planar steel frames using the Search Group Algorithm by Carraro, Felipe, Lopez, Rafael Holdorf, Miguel, Leandro Fleck Fadel

“…This paper presents a design procedure employing the Search Group Algorithm (SGA) for discrete optimization of planar steel frames. SGA is a global…”
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Probability of failure sensitivity analysis using polynomial expansion by Torii, André Jacomel, Lopez, Rafael Holdorf, Miguel, Leandro Fleck Fadel

“…Probability of failure sensitivity analysis is a subject of major interest in uncertainty based optimization. However, the computational effort required to…”
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Damage detection under ambient vibration by harmony search algorithm by Miguel, Leandro Fleck Fadel, Miguel, Letícia Fleck Fadel, Kaminski, João, Riera, Jorge Daniel

“…► A new approach for vibration-based (SHM) procedures is presented. ► Stochastic system identification with the evolutionary harmony search algorithm. ►…”
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Layout optimization of transmission line family structures by Deichmann, Alexandre, Fadel Miguel, Leandro Fleck, Lopez, Rafael Holdorf, Torii, André Jacomel, Pimenta, Joel Vitor

“…Due to topography conditions, transmission line towers (TLTs) with different heights are required to the same transmission line. To ease industrial production,…”
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An improved hybrid optimization algorithm for vibration based-damage detection by Nhamage, Idilson António, Lopez, Rafael Holdorf, Miguel, Leandro Fleck Fadel

“…•A modification of the P-NMA algorithm is proposed for damage detection.•IP-NMA speeds up the convergence of the damage detection problem.•IP-NMA is more…”
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A Padé-based fast frequency sweep approach for irregular large-scale building models subjected to seismic excitation by Brambila de Salles, Humberto, Fadel Miguel, Leandro Fleck, Lenzi, Marcos Souza, Holdorf Lopez, Rafael

“…•A MOR scheme to compute the response of irregular buildings under seismic loads.•The Padé-based FFS solves the dynamical response of controlled…”
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PRODUCTION OF Adenium obesum (FORSSK.) ROEM. & SCHULT SEEDLINGS IN DIFFERENT SUBSTRATES by Fleck, Izabel Melz, Rosset, Jean Sérgio, Fleck, Leandro, Zoz, Tiago, Ozório, Jefferson Matheus Barros

“…Low-cost substrates can potentially reduce production costs for ornamental plants such as Adenium obesum, popularly known as desert rose. The emergence and…”
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