Modeling structures in fire with SAFIR®: Theoretical background and capabilities

Franssen, Jean-Marc; Gernay, Thomas

doi:10.1108/JSFE-07-2016-0010

Request a copy

Article (Scientific journals)

Modeling structures in fire with SAFIR®: Theoretical background and capabilities

Franssen, Jean-Marc; Gernay, Thomas

2017 • In Journal of Structural Fire Engineering, 8 (3), p. 300-323

Peer Reviewed verified by ORBi

Permalink
https://hdl.handle.net/2268/202859

DOI
10.1108/JSFE-07-2016-0010

Files (1)Send to Details Statistics Bibliography Similar publications

Files

Full Text

JSFE-07-2016-0010.pdf

Publisher postprint (448.33 kB)

Request a copy

All documents in ORBi are protected by a user license.

Send to

RIS BibTex APA Chicago Permalink X Linkedin

Details

Keywords :

SAFIR; numerical modeling; finite element analysis; structures; fire; thermal analysis

Abstract :

[en] Purpose: This paper describes the theoretical background and main hypotheses at the basis of SAFIR®, a nonlinear finite element software for modeling structures in fire. The paper also explains how to use the software at its full extent. The discussed numerical modeling principles can be applied with other similar software. Approach: Following a general overview of the organization of the software, the thermal analysis part is explained, with the basic equations and the different possibilities to apply thermal boundary conditions (compartment fire, localized fire, etc.). Next, the mechanical analysis part is detailed, including the time integration procedures and the different types of finite elements: beam, truss, shell, spring and solid. Finally, the material laws are described. The software capabilities and limitations are discussed throughout the paper. Findings: By accommodating multiple types of finite elements and materials, by allowing the user to consider virtually any section type and to input the fire attack in multiple forms, the software SAFIR® is a comprehensive tool for investigating the behavior of structures in the fire situation. Meanwhile, being developed exclusively for its well-defined field of application, it remains relatively easy to use. Value: The paper will improve the knowledge of readers (researchers, designers and authorities) about numerical modeling used in structural fire engineering in general and the capabilities of a particular software largely used in the fire engineering community.

Disciplines :

Civil engineering
Mechanical engineering

Author, co-author :

Franssen, Jean-Marc ; Université de Liège > Département ArGEnCo > Ingénierie du feu

Gernay, Thomas ; Université de Liège > Département ArGEnCo > Ingénierie du feu

Language :

English

Title :

Modeling structures in fire with SAFIR®: Theoretical background and capabilities

Publication date :

September 2017

Journal title :

Journal of Structural Fire Engineering

ISSN :

2040-2317

Publisher :

Emerald, Bingley, United Kingdom

Volume :

Issue :

Pages :

300-323

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

http://www.emeraldinsight.com/doi/pdfplus/10.1108/JSFE-07-2016-0010

Available on ORBi :

since 25 October 2016

Statistics

Number of views

656 (30 by ULiège)

Number of downloads

50 (4 by ULiège)

More statistics

Scopus citations^®

219

Scopus citations^®
without self-citations

166

OpenCitations

122

OpenAlex citations

233

Bibliography

Coll, A., Ribo, R., Pasenau, M., Escolano, E., Perez, J., Melendo, A., Monros, A. and Garate, J. (2016), "GiD v.13 User Manual", CIMNE (Eds).
Cooper, L.Y. (1997), "The Thermal response of Gypsum-Panel/Steel-Stud Wall Systems exposed to Fire Environments - a simulation for use in Zone-Type Fire Models, NISTIR 6027", National Institute of Standards and Technology, Gaithersburg,MD.
De Ville de Goyet, V. (1986), "Nonlinear elastic frame analysis by finite element", Journal of Structural Engineering (ASCE), Vol. 112 No. 10, pp. 2362-2365.
EN 1991-1-2 (2002), Eurocode 1: Actions on Structures - Part 1-2: General Actions - Actions on Structures Exposed to Fire, CEN, Brussels.
EN 1992-1-2 (2005), Eurocode 2: Design of Concrete Structures - Part 1-2: General Rules - Structural Fire Design, CEN, Brussels.
EN 1993-1-2 (2005), Eurocode 3: Design of Steel Structures - Part 1-2: General Rules - Structural Fire Design, CEN, Brussels.
EN 1994-1-2 (2005), Eurocode 4: Design of Composite Steel and Concrete Structures. Part 1-2: General Rules - Structural Fire Design, CEN, Brussels.
EN 1995-1-2 (2004), Eurocode 5: Design of Timber Structures - Part 1-2: General - Structural Fire Design, CEN, Brussels.
EN 1999-1-2 (2007), Eurocode 9: Design of Aluminum Structures - Part 1-2: Structural Fire Design, CEN, Brussels.
Franssen, J.M. (1993a), "SAFIR applied to prestressed beams at ambient temperature", External Prestressing in Structures. Non-Linear Calculation Tests of Prestressed Beams, Association Française pour la Construction, pp. 67-73.
Franssen, J.M. (1993b), "Thermal elongation of concrete during heating up to 700°C and cooling", University of Liege, available at: Http://hdl.handle.net/2268/531
Franssen, J.M. (2005), "SAFIR: A thermal-structural program for modelling structures under fire", Engineering Journal, Vol. 42 No. 3, pp. 143-158.
Franssen, J.M. and Gens, F. (2004), "Dynamic analysis used to cope with partial and temporary failures", in Franssen, J.M., Benichou, N., Kodur, V. and Sultan, M. (Eds), Proceedings of SiF'04: Third International Structures in Fire Workshop, IRC, Ottawa, pp. 297-310.
Franssen, J.M., Cowez, B. and Gernay, T. (2014), "Effective stress method to be used in beam finite elements to take local instabilities into account", Fire Safety Science, Vol. 11, pp. 544-557.
Gernay, T. (2012), "Effect of transient creep strain model on the behavior of concrete columns subjected to heating and cooling", Fire Technology, Vol. 48 No. 2, pp. 313-329.
Gernay, T. and Dimia, M.S. (2013), "Structural behaviour of concrete columns under natural fires", Engineering Computations, Vol. 30 No. 6, pp. 854-872.
Gernay, T. and Franssen, J.M. (2012), "A formulation of the eurocode 2 concrete model at elevated temperature that includes an explicit term for transient creep", Fire Safety Journal, Vol. 51, pp. 1-9.
Gernay, T. and Franssen, J.M. (2015a), "A performance indicator for structures under natural fire", Engineering Structures, Vol. 100, pp. 94-103.
Gernay, T. and Franssen, J.M. (2015b), "A plastic-damage model for concrete in fire: Applications in structural fire engineering", Fire Safety Journal, Vol. 71, pp. 268-278.
Gernay, T., Millard, A. and Franssen, J.M. (2013), "A multiaxial constitutive model for concrete in the fire situation: Theoretical formulation", International Journal of Solids and Structures, Vol. 50 Nos 22/23, pp. 3659-3673.
Luisier, M., Schenk, O., et al. (2013), "Fast methods for computing selected elements of the green's function in massively parallel nanoelectronic device simulations", inWolf, F., Mohr,B. and an Ney, D. (Eds), Euro-Par 2013, LNCS 8097, Springer-Verlag Berlin, Heidelberg, pp. 533-544.
Talamona, D. and Franssen, J.M. (2000), "New quadrangular shell element in SAFIR", Proceedings of the 1st International Structures in Fire workshop, in Franssen, J.M. (Ed.), Copenhagen, Liege, pp. 195-210.
Tondini, N., Vassart, O. and Franssen, J.M. (2012), "Development of an interface between CFD and FE software", Proceedings of the 7th International Conference on Structures in Fire, ETH Zurich, Switzerland, pp. 459-468.
Vassart, O., Hanus, F., Brasseur, M., Obiala, R., Franssen, J.-M., Scifo, A., Zhao, B., Thauvoye, C., Nadjai, A. and Sanghoon, H. (2016), "Temperature assessment of a vertical steel member subjected to localised fire, acronym LOCAFI", Report RFSR-CT-2012-00023, European Commission Research Programme of the Research Fund for Coal and Steel, Esch/Alzette.
Wickström, U. (1979), "A numerical procedure for calculating temperature in hollow structures exposed to fire", Report No 79-2, Dpt of Struct. Mech., Lund.