Biblioteca Digital do Instituto Politécnico de Bragança   Instituto Politécnico de Bragança

Biblioteca Digital do IPB >
Escola Superior de Tecnologia e Gestão >
Mecânica Aplicada >
DMA - Artigos em Proceedings Não Indexados ao ISI/Scopus >

Please use this identifier to cite or link to this item:

Título: Critical temperature evaluation for laterally unrestrain steel I-beams in case of fire
Autor: Piloto, P.A.G.
Mesquita, L.M.R.
Vaz, M.A.P.
Vila Real, P.M.M.
Issue Date: 2004
Citação: Piloto, P.A.G.; Mesquita, L.M.R.; Vaz, M.A.P.; Vila Real, P.M.M. (2004) - Critical temperature evaluation for laterally unrestrain steel I-beams in case of fire. In International Technical Congress on Computational Simulation Models in Fire Engineering and Research. Santander, Spain.
Resumo: Fire resistance may be determined by simple calculation models applied to individual members and should be based on safe results. This safety can be verified on three distinct domains, such as, temperature domain, load bearing domain and time domain. The temperature domain was chosen to show how a beam element might achieve the design limit state by lateral instability, for a specified degree of utilisation. A set of uncouple numerical simulations using ANSYS software will be presented, regarding that mechanical deformation does not produce temperature change in the structural material (no explicit creep is considered in the mechanical model). The thermal deformation, due to temperature increase, is responsible for the introduction of mechanical stresses, which means that first is necessary to define the fire and than, for each mechanical load increment, update deformation field, under an iterative procedure (mechanical response model). The numerical model is based on geometric and material nonlinearities. The numerical tests use shell finite elements, with initial out-of-straightness and material behaviour in accordance to the Eurocode 3. The beam element will be tested with two forks supports and with a concentrated mid span dead load Q, with increasing temperature, based on 800 [ºC/h] heating rate. A set of results for different beam lengths will be presented and demonstrate that all critical temperatures are greater than the specified value according to Eurocode 3. For critical temperature validation, a set of experimental full-scale tests will be presented.
Appears in Collections:DMA - Artigos em Proceedings Não Indexados ao ISI/Scopus

Files in This Item:

File Description SizeFormat
Rep paper 12.PDF1,49 MBAdobe PDFView/Open

Please give feedback about this item
FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpaceOrkut
Formato BibTex mendeley Endnote Logotipo do DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


© Instituto Politécnico de Bragança - Biblioteca Digital - Feedback - Statistics
Promotores do RCAAP   Financiadores do RCAAP

Fundação para a Ciência e a Tecnologia Universidade do Minho   Governo Português Ministério da Educação e Ciência PO Sociedade do Conhecimento (POSC) Portal oficial da União Europeia