Lifting off simulation of an offshore supply vessel considering ocean environmental loads and lifting off velocity

IF 0.7 Q4 ENGINEERING, OCEAN

Ocean Systems Engineering-An International Journal Pub Date : 2015-09-25 DOI:10.12989/OSE.2015.5.3.181

Dong-Hoon Jeong, M. Roh, S. Ham

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引用次数: 1

Abstract

An OSV (Offshore Support Vessel) is being used to install a structure which is laid on its deck or an adjacent transport barge by lifting off the structure with its own crane, lifting in the air, crossing splash zone, deeply submerging, and lastly landing it. There are some major considerations during these operations. Especially, when lifting off the structure, if operating conditions such as ocean environmental loads and lifting off velocity are not suitable, the collision can be occurred due to the relative motion between the structure and the OSV or the transport barge. To solve this problem, this study performs the physics-based simulation of the lifting off step while the OSV installs the structure. The simulation includes the calculation of dynamic responses of the OSV and the structure, including the collision detection between the transport barge and the structure. To check the applicability of the physics-based simulation, it is applied to a problem of the lifting off step by varying the ocean environmental loads and the lifting off velocity. As a result, it is confirmed that the operability of the lifting off step are affected by the conditions.

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考虑海洋环境载荷和卸载速度的近海补给船卸载仿真

OSV(海上支援船)被用来安装安装在甲板上或邻近运输驳船上的结构，其方法是用自己的起重机将结构吊起，在空中吊起，穿过飞溅区，深潜，最后着陆。在这些操作中有一些主要的考虑因素。特别是在吊装构造物时，如果海洋环境载荷和吊装速度等操作条件不合适，构造物与OSV或运输驳船之间的相对运动可能会发生碰撞。为了解决这一问题，本研究对OSV安装结构时的起升步骤进行了基于物理的模拟。仿真包括了船船与结构的动力响应计算，以及运输驳船与结构的碰撞检测。为了验证物理模拟的适用性，将其应用于改变海洋环境载荷和上升速度的上升步骤问题。结果表明，条件对升降台阶的可操作性有一定的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ocean Systems Engineering-An International Journal ENGINEERING, OCEAN-

自引率

22.20%

发文量

期刊介绍： The OCEAN SYSTEMS ENGINEERING focuses on the new research and development efforts to advance the understanding of sciences and technologies in ocean systems engineering. The main subject of the journal is the multi-disciplinary engineering of ocean systems. Areas covered by the journal include; * Undersea technologies: AUVs, submersible robot, manned/unmanned submersibles, remotely operated underwater vehicle, sensors, instrumentation, measurement, and ocean observing systems; * Ocean systems technologies: ocean structures and structural systems, design and production, ocean process and plant, fatigue, fracture, reliability and risk analysis, dynamics of ocean structure system, probabilistic dynamics analysis, fluid-structure interaction, ship motion and mooring system, and port engineering; * Ocean hydrodynamics and ocean renewable energy, wave mechanics, buoyancy and stability, sloshing, slamming, and seakeeping; * Multi-physics based engineering analysis, design and testing: underwater explosions and their effects on ocean vehicle systems, equipments, and surface ships, survivability and vulnerability, shock, impact and vibration; * Modeling and simulations; * Underwater acoustics technologies.