Finite element modelling of thermo-elastoplastic behaviour of hot-rolled steel profiles submitted to fire

• Fonseca, Elza M. M. ^[1] ; Vila Real, Paulo M. M ^[2]
  1. [1] Instituto Politécnico de Bragança

     Instituto Politécnico de Bragança

     Bragança (Sé), Portugal

     
  2. [2] Universidade de Aveiro

     Universidade de Aveiro

     Vera Cruz, Portugal

     
• Localización: Métodos Numéricos en Ingeniería: [Comunicaciones presentadas al IV Congreso de Métodos Numéricos en Ingeniería celebrado en Sevilla durante los días 7-10 de Junio de 1999] / R. Abascal (ed. lit.), José Domínguez Abascal (ed. lit.) , G. Bugeda (ed. lit.), 1999, ISBN 84-89925-45-3
• Idioma: español
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• Resumen

  • This paper presents finite element algorithms developed to simulate the thermoelastoplastic behaviour of steel profiles under high temperatures, in particular those arising from fire conditions. Transient analyses of the temperature field and the mechanical response at each instant have been done. The thermal response obtained with the finite element formulation and the results obtained using the simplified heat conduction equation according to the Eurocode 3 have been compared for several series of hot-rolled steel profiles. The nonlinearity of the problem due to the thermal dependence of the material properties has been taken into account and an elastoplastic model has been used