Evaluation of Loads During a Free-Fall Lifeboat Drop
Evaluation of Loads During a Free-Fall Lifeboat Drop
复制标题
自由落体救生艇降落过程中的载荷评估
DOI：
10.1115/omae2013-11350
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
K. Brinchmann
中科院分区：
文献类型：
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作者：
A. Califano;K. Brinchmann
针对用于海上设施紧急疏散的自由落体救生艇（FFLB）的设计，制定了新的海上标准（DNV-OS-E406）[1]。本标准旨在确保安全疏散，注重早期设计。载荷（CFD）和结构（FE）分析用于协助确定自由落体救生艇是否符合标准规定的目标安全要求。本文描述了评估FFLB结构能力时使用的方法。通过计算流体动力学（CFD）和有限元分析（FEA），在救生艇降落的每个阶段都建立了结构完整性。在有限体积网格上计算的CFD载荷插值到有限元模型中进行结构分析，以获得应力、应变和挠度，最终评估救生艇的结构能力。这项工作的重点是水动力模型和荷载，而结构分析则由Brinchmann等人进行了更深入的讨论。ASME版权所有©2013
A new Offshore Standard (DNV-OS-E406) [1] has been developed for the design of Free Fall Lifeboats (FFLB) used for emergency evacuation from offshore structures. This standard aims at ensuring safe evacuation, focusing on the design at an early stage. Load (CFD) and structural (FE) analyses are used to assist in determining whether or not the free fall lifeboats comply with the Target Safety requirements as set forth by the Standard.The present paper describes the methodology used when assessing the structural capacity of FFLB. The structural integrity is established throughout every phase of a lifeboat drop, linking computational fluid dynamics (CFD) and finite element analysis (FEA). Loads computed from CFD on a finite volume mesh are interpolated to a finite element model where the structural analysis can be performed in order to obtain stresses, strains and deflections, and finally assess the structural capacity of the lifeboat.Emphasis in this work is given to the hydrodynamic model and loads, while structural analyses are discussed more in depth by Brinchmann et al. [2].Copyright © 2013 by ASME