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首页> 外文会议>International symposium on practical design of ships and other floating structures >Safety of Membrane Type Cargo Containment System in LNG Carrier under Ice-Ship Repeated Glancing Impact of Ice
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Safety of Membrane Type Cargo Containment System in LNG Carrier under Ice-Ship Repeated Glancing Impact of Ice

机译：冰船膜型货舱壳体系统的安全性在冰船下反复瞥了一眼冰

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摘要

Arctic and sub-arctic regions of Russia have large gas reservoirs. Natural gas extracted from these regions may be exported to other destinations through a ship-borne transportation system. In this case, one of key issues at conceptual design phase is the integrity and safety of LNG cargo containment systems (LNG CCS) under repeated ice impact. The impact by small ice floes in ice-infested areas may be frequently encountered in normal seagoing condition. Thereby the repeated impact may be considered to be an operational load, which can be defined based on classification societies' ice class rules. The view points of the safety evaluation up to now have been limited to structural hull deformations by the collision. However, the effects of vibratory acceleration induced by the impact on LNG CCS have not been examined. In the present study, numerical simulations are performed for a 150K class Mark III type LNG carrier to investigate dynamic responses of LNG CCS under impact-induced vibratory acceleration. Then the collision experiments to emulate computational simulations are carried out to verify simulation results and the integrity of LNG CCS under the repeated impact between small ice floes and ship.
机译：俄罗斯的北极和亚天北极地区都有大型气体藏。从这些地区提取的天然气可以通过船舶运输系统出口到其他目的地。在这种情况下，概念设计阶段的关键问题之一是LNG货物遏制系统（LNG CCS）的完整性和安全性在重复的冰波下。在正常的海洋病症中，可能会遇到冰侵染区域中的小冰絮凝物的影响。由此，可以认为重复的影响是操作负荷，这可以基于分类社会的冰级规则来定义。现在，安全评估的视点仅限于通过碰撞的结构船体变形。然而，尚未检查由抗冲击CCS的振动加速诱导的振动加速的影响。在本研究中，对150K类标记III型LNG载体进行数值模拟，以研究LNG CC在冲击诱导的振动加速下的动力响应。然后，进行了模拟计算模拟的碰撞实验，以验证模拟结果和LNG CC在小冰浮子和船舶之间的反复冲击下的完整性。

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