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首页> 外文会议>International conference on ICSOT: Developments in fixed 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：煤气爆炸负荷下CFD与FEA模拟相互作用的计算模拟

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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：本文介绍了关于的浮式生产储油和卸油（FPSO）单元顶边结构意外爆炸行动的计算模型。压力分布是通过计算流体动力学（CFD）模拟得到，使用FLACS代码。所计算的压力与时间历程首先通过平滑曲线来近似，基于较少的时间点，同时保留了最大值和最小值。对于结果分析的ANSYS / LS-DYNA非线性有限元法（NLFEM）中的溶液使用，并使用具有非线性本构关系壳有限元素被建模的结构。为了适应的不同的问题的不同要求，本文涵盖了这两种分析的之间的接口程序。的接口是控制量系统和壳元件系统之间的连接。分配的直接的压力负荷从CFD结果向FEM模型程序中描述和代表性的结果通过方法的应用示例模型给出。

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