|In general, an OSV (Offshore Support Vessel) installs an offshore structure which is laid on its deck or an adjacent transportation barge by lifting the offshore structure with its own crane, by moving in the air, and by lowering down into the sea. There are three major considerations during these operations. First, the collision does not occur due to the relative motion between the offshore structure and the OSV or the transportation barge when lifting the offshore structure. Second, the lifted offshore structure should be adequately moved without any significant and undesirable pendulum motions in the aspect of control. Third, at the moment that the offshore structure penetrates the water surface, the slamming impact force and the varying buoyancy force should be considered. Therefore, this study proposes a physics-based simulation system to consider these three major considerations. To evaluate the applicability of the system, it was applied to some examples.
Dong-Hoon Jeong, Myung-Il Roh, Seung-Ho Ham, Luman Zhao, Hye-Won Lee, Sol Ha, "Physics-based Simulation of Offshore Installation Operations Considering Ocean Environmental Loads and Operating Conditions", Proceedings of ASEM(Advances in Structural Engineering and Mechanics) 2015, Incheon, Korea, pp. 1-8, 2015.08.25-29