Effects of Moving Ice Loads on Damage to Hull Structures

移动冰荷载对船体结构损伤的影响

• 批准号: RGPIN-2016-04632
• 负责人: Quinton, Bruce
• 金额: $ 1.68万
• 依托单位: Memorial University of Newfoundland
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=752816
• 关键词: Effects; Moving; Ice; Loads; Damage

Arctic shipping has seen a dramatic increase in recent years, due mainly to natural resource exploration and shipping. Shipping through the Northern Sea Route is at a level higher than ever before. Commercial ships are attempting to move through the Northwest Passage; for example the 2013 voyage of the bulk carrierMS Nordic Orion. The cruise ship Crystal Serenity (which has no ice strengthening) will cruise through the Northwest Passage in 2016. This increase in Arctic shipping activity implies an rise in the numbers of ships present in the Arctic; thus increasing the probability of shipping accidents. One of the major challenges associated with operating in the Arctic is the danger to hull structures posed by accidental loads from sea ice and floating glacial ice.Moving loads are loads that slide along a ship's hull; instead of bouncing off after initial impact. Moving loads, in particular, have the potential to cause much greater damage to ship hulls than stationary loads. Significant risks to personnel, the environment, and ships are associated with moving ice load accident scenarios, including when an ice-strengthened ship is subject to loads greater than the design load, or when a non-ice-strengthened ship (e.g. the cruise ship Crystal Serenity) encounters any ice at all. In these situations, the level of hull damage may be significant, and the risk associated with operating in ice-infested water is very much elevated.This research program examines moving ice loads on ship hulls, and response of ship hulls to moving ice loads. These are difficult to treat simultaneously because the study of any one in particular has traditionally required oversimplification of the other. Much is understood about the mechanics of ice load development when ice impacts a “rigid” structure. Similarly, the behaviour of hull structures is well understood when acted upon by “design loads”, or simplified stationary ice loads. The behaviour of each, however, has not been shown to be independent of the other. It is the goal of this research program to study the coupled effects of ice loads and structural response. This will be achieved through a combination of laboratory experiments, numerical modeling, and analytical modeling.Some of the outcomes of this project include a better understanding of moving ice loads and their effect on hull structures. New bench-marked numerical and analytical tools for assessing moving loads on hull plates and frames will be developed. These models will be used to develop moving-load resistant ship hull designs. Also, highly qualified personnel will gain knowledge and experience with state-of-the-art techniques for the design and analysis of polar-classed ships and structures.

北极航运近年来急剧增加，主要是由于自然资源勘探和航运。通过北方海路的航运比以往任何时候都要高。商船正试图通过西北航道，例如2013年北欧猎户座号散货船的航行。“水晶宁静号”（Crystal Serenity）游轮（没有冰加固）将于2016年在西北航道巡航。北极航运活动的增加意味着北极船舶数量的增加，从而增加了航运事故的可能性。在北极地区作业的主要挑战之一是海冰和漂浮冰川冰的意外载荷对船体结构造成的危险。移动载荷是沿着船舶船体滑动的载荷;而不是在初始撞击后反弹。特别是移动载荷，对船体造成的损害可能比固定载荷大得多。对人员、环境和船舶的重大风险与移动冰载荷事故情景相关，包括当冰加固船舶承受大于设计载荷的载荷时，或者当非冰加固船舶（例如，水晶宁静号游轮）遇到任何冰时。在这些情况下，船体损坏的程度可能是显着的，与冰出没的水操作的风险是非常highered.This研究计划检查移动冰载荷船体，船体的响应移动冰载荷。这些问题很难同时处理，因为对其中任何一个问题的研究传统上都需要对另一个问题进行过度简化。当冰冲击“刚性”结构时，对冰荷载发展的力学有了很大的了解。同样，船体结构在受到“设计载荷”或简化的静止冰载荷作用时的行为也很好理解。然而，每一种行为都没有被证明是相互独立的。本研究计划的目的是研究冰荷载和结构响应的耦合效应。这将通过实验室实验、数值建模和分析建模的结合来实现。该项目的一些成果包括更好地了解移动冰载荷及其对船体结构的影响。将开发用于评估船体板和框架上的移动载荷的新的基准数字和分析工具。这些模型将用于开发抗动载的船舶船体设计。此外，高素质的人员将获得知识和经验与国家的最先进的技术，用于设计和分析极地级船舶和结构。