Percorrer por autor "Pinho-da-Cruz, Joaquim"
A mostrar 1 - 4 de 4
Resultados por página
Opções de ordenação
- Bending resistance of stainless steel beams at elevated temperaturesPublication . Alves, Matheus Henrique; Mesquita, L.M.R.; Piloto, P.A.G.; Lopes, Nuno; Arrais, Flávio; Vila Real, Paulo M.M.; Pinho-da-Cruz, JoaquimTo analyse the structural behaviour of stainless steel members at elevated temperatures, a set of three-point bending tests on RHS 150x100x5 beams of the grade 1.4301 were conducted. Numerical modelling of these tests has been afterwards performed at the measured temperatures, achieving close approximation to observed experimental results. Analytical methods to predict the load-deflection behaviour are also analysed.
- Caracterização experimental da resistência ao fogo de vigas RHS em aço inoxidávelPublication . Lopes, Nuno; Arrais, Flávio; Vila Real, Paulo M.M.; Alves, Matheus Henrique; Mesquita, L.M.R.; Piloto, P.A.G.; Pinho-da-Cruz, JoaquimCom o objetivo de analisar experimentalmente o comportamento mecânico de elementos estruturais em aço inoxidável a temperaturas elevadas, foi realizado um conjunto de ensaios de resistência ao fogo, à flexão em três pontos, a perfis com secção transversal RHS150x100x5, em aço inoxidável 1.4301, aplicando a curva de aquecimento padrão ISO 834. Os resultados são analisados e comparados com os obtidos por modelação numérica, realizada com o programa de elementos finitos SAFIR, validando o modelo numérico construído e a aplicação da lei constitutiva para o aço inoxidável a temperaturas elevadas proposta na nova geração da Parte 1-2 do EC3.
- Fire resistance of austenitic stainless steel beams with rectangular hollow sectionsPublication . Lopes, Nuno; Arrais, Flávio; Real, Paulo Vila; Alves, Matheus Henrique; Mesquita, L.M.R.; Piloto, P.A.G.; Pinho-da-Cruz, JoaquimThis paper presents a study on the structural behaviour of stainless steel profiles under fire conditions. An experimental campaign of three-point bending tests on rectangular hollow section beams of the grade 1.4301 (also known as 304) were conducted, considering both steady-state and transient state conditions. Prior to those tests, the mechanical characterization of the stainless steel was investigated. The constitutive laws obtained by tensile tests at high temperatures are compared with those recommended in Eurocode 3, whose respective material models were recently proposed for modifications, still requiring complete validation. In addition, numerical modelling of the bending tests has been performed afterwards achieving close approximation to the observed experimental results. Finally, analytical methods to predict the load-deflection behaviour are also presented. Good agreement between the considered methodologies was attained validating their application on the prediction of the fire behaviour of stainless steel beams.
- Load bearing capacity of stainless steel beams at elevated temperaturesPublication . Alves, Matheus Henrique; Mesquita, L.M.M.; Piloto, P.A.G.; Lopes, Nuno; Arrais, Flávio; Vila Real, Paulo M.M.; Pinho-da-Cruz, JoaquimTo analyse the load bearing capacity of stainless steel (SS) members at elevated temperatures, a set of three-point bending tests was conducted on RHS 150x100x5 beams with SS grade 1.4301. The numerical modelling of these tests has been performed at elevated temperatures, achieving close approximation to observed experimental results. The load bearing capacity difference between the numerical results and the experimental results is smaller than 10%. Analytical methods were also used to predict the load-deflection behaviour.