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首页> 外文期刊>Journal of structural fire engineering >Modeling structures in fire with SAFIR®: Theoretical background and capabilities
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Modeling structures in fire with SAFIR®: Theoretical background and capabilities

机译：使用SAFIR®对火灾中的结构进行建模：理论背景和功能

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Purpose - This paper aims to describe 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. Design/methodology/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. Originality 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.
机译：目的-本文旨在基于SAFIR®（一种用于对火灾结构进行建模的非线性有限元软件）来描述理论背景和主要假设。本文还说明了如何全面使用该软件。讨论的数值建模原理可以与其他类似软件一起使用。设计/方法/方法-在对软件的组织进行总体概述之后，将对热分析部分进行说明，并提供基本方程式和应用热边界条件（隔室着火，局部着火等）的不同可能性。接下来，详细介绍机械分析部分，包括时间积分过程和不同类型的有限元：梁，桁架，壳体，弹簧和实体。最后，描述了物质定律。整个白皮书中都讨论了软件功能和局限性。结果-通过容纳多种类型的有限元和材料，允许用户考虑几乎任何截面类型并以多种形式输入火灾攻击，软件SAFIR®是研究火灾情况下结构行为的综合工具。同时，由于专门为其定义明确的应用领域而开发，因此它仍然相对易于使用。原创性价值-本文将提高读者（研究人员，设计人员和权威人士）的知识，这些知识通常用于结构消防工程中的数值建模，以及在消防工程界中广泛使用的特定软件的功能。

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