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首页> 外文会议>ICSOT: Developments in fixed amp; floating offshore structures >COMPUTATIONAL MODELLING OF INTERACTION BETWEEN CFD AND FEA SIMULATIONS UNDER GAS EXPLOSION LOADS
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COMPUTATIONAL MODELLING OF INTERACTION BETWEEN CFD AND FEA SIMULATIONS UNDER GAS EXPLOSION LOADS

机译：气体爆炸载荷下CFD与有限元模拟之间相互作用的计算模型

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摘要

This paper presents a computational modelling of accidental explosion actions on the topside structures of a floating, production, storage and offloading (FPSO) unit. Pressure distributions were obtained by computational fluid dynamics (CFD) simulations, using the FLACS code. The computed pressure versus time histories were first approximated by smoother curves, based on fewer time-points, while retaining the maximum and minimum values. For the consequence analysis the ANSYS/LS-DYNA nonlinear finite element method (NLFEM) was employed and the structures were modeled using shell finite elements with nonlinear constitutive relations. In order to accommodate the diverse requirements of the different problems, this paper covers the interface program between the two kinds of analyses. The interface is a connections between the control volume system and shell element system. The procedure of assignment the pressure loadings directly from the CFD results to the FEM model is described and representative results are given through the application of the methodology to a sample model.
机译：本文介绍了浮式，生产，存储和卸载（FPSO）单元顶部结构上意外爆炸动作的计算模型。使用FLACS代码通过计算流体动力学（CFD）模拟获得压力分布。首先，根据较少的时间点，通过更平滑的曲线来近似计算出的压力与时间的关系，同时保留最大值和最小值。为了进行结果分析，采用了ANSYS / LS-DYNA非线性有限元方法（NLFEM），并使用具有非线性本构关系的壳有限元对结构进行了建模。为了适应不同问题的不同要求，本文介绍了两种分析之间的接口程序。该接口是控制体积系统和壳单元系统之间的连接。描述了将压力载荷直接从CFD结果分配给FEM模型的过程，并通过将该方法应用于样本模型来给出代表性结果。

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  • 会议地点 Busan(KR)
  • 作者

    J M Sohn; S J Kim; B H Kim; C K Kim; J K Paik; G M Katsaounis; M Samuelides;

  • 作者单位

    The Ship and Offshore Research Institute (The Lloyd's Register Educational Trust Research Centre of Excellence at Pusan National University), Korea;

    The Ship and Offshore Research Institute (The Lloyd's Register Educational Trust Research Centre of Excellence at Pusan National University), Korea;

    The Ship and Offshore Research Institute (The Lloyd's Register Educational Trust Research Centre of Excellence at Pusan National University), Korea;

    The Ship and Offshore Research Institute (The Lloyd's Register Educational Trust Research Centre of Excellence at Pusan National University), Korea;

    The Ship and Offshore Research Institute (The Lloyd's Register Educational Trust Research Centre of Excellence at Pusan National University), Korea;

    National Technical University of Athens, Greece;

    National Technical University of Athens, Greece;

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