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Nonlinear structural response in jet fire in association with the interaction between fire loads and time-variant geometry and material properties

机译：喷射火中的非线性结构响应以及火荷载与时变几何形状和材料特性之间的相互作用

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摘要

For safety design of structures against fire loads, time-variant geometry and material properties depending on the temperature should be considered with fluid-structure interaction (FSI) analysis. One-way FSI analysis is generally applied due to a time consuming task. But, it has big difference of structural response between conducting one-way and two-way FSI analysis. And two-way analysis is also affected by time increment of analysis for updating the geometry, and fire loads. The aim of this study is to investigate the effect of time increments on two-way FSI analysis of structures subjected to jet fire, and to suggest a proper time increment for two-way FSI analysis. In the present study, geometries and material properties are updated at every time increments, and kinds of two-way FSI analysis are performed with different time increments by using computational fluid dynamics (CFD) and nonlinear finite element analysis (NLFEA) and an interface program between CFD and NLFEA.
机译：为了对火灾荷载进行安全设计，应通过流固耦合（FSI）分析考虑随温度变化的时变几何形状和材料特性。由于费时的任务，通常采用单向FSI分析。但是，进行单向和双向FSI分析的结构响应差异很大。而且双向分析还受更新几何形状的分析时间增量和火灾荷载的影响。这项研究的目的是研究时间增量对遭受喷射火的结构的双向FSI分析的影响，并为双向FSI分析建议合适的时间增量。在本研究中，几何形状和材料属性在每个时间增量处都进行更新，并且通过使用计算流体力学（CFD）和非线性有限元分析（NLFEA）和接口程序以不同的时间增量执行各种双向FSI分析CFD和NLFEA之间。

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  • 来源
    《Ocean Engineering》 |2017年第1期|118-134|共17页
  • 作者

    Kim Sang Jin; Lee Jin; Kim Sang Hwan; Seo Jung Kwan; Kim Bong Ju; Ha Yeon Chul; Paik Jeom Kee; Lee Kang Su; Park Byoungjae; Ki Min Suk; Sohn Jung Min;

  • 作者单位

    Pusan Natl Univ, Lloyds Register Fdn, Res Ctr Excellence, Korea Ship & Offshore Res Inst, Busan, South Korea;

    Pusan Natl Univ, Dept Naval Architecture & Ocean Engn, Busan, South Korea;

    Pusan Natl Univ, Dept Naval Architecture & Ocean Engn, Busan, South Korea;

    Pusan Natl Univ, Lloyds Register Fdn, Res Ctr Excellence, Korea Ship & Offshore Res Inst, Busan, South Korea;

    Pusan Natl Univ, Lloyds Register Fdn, Res Ctr Excellence, Korea Ship & Offshore Res Inst, Busan, South Korea;

    Pusan Natl Univ, Lloyds Register Fdn, Res Ctr Excellence, Korea Ship & Offshore Res Inst, Busan, South Korea;

    Pusan Natl Univ, Lloyds Register Fdn, Res Ctr Excellence, Korea Ship & Offshore Res Inst, Busan, South Korea|Pusan Natl Univ, Dept Naval Architecture & Ocean Engn, Busan, South Korea|UCL, Dept Mech Engn, London, England;

    Korea Res Inst Ships & Ocean Engn, Daejeon, South Korea;

    Korea Res Inst Ships & Ocean Engn, Daejeon, South Korea;

    Korea Res Inst Ships & Ocean Engn, Daejeon, South Korea;

    Pukyong Natl Univ, Dept Naval Architecture & Marine Syst Engn, Busan, South Korea;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Fire loads; Time-variant geometry and material properties; Structural response; Two-way FSI analysis; Time increments;

    机译：火灾荷载;时变几何形状和材料特性;结构响应;双向FSI分析;时间增量;

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