讲座题目：船体冰撞损伤评估程序
讲 座 人：Prof. Ekaterina Kim Norwegian University of Science and Technology
时 间：10月9日(周三)10:00
地 点：机电楼431会议室
摘要：
Procedures For Damage Assessment Of A Ship Hull Due To Ice Impacts
Historically, operators of marine vessels and offshore platforms have done everything to avoid severe or extreme ice conditions. A moving vessel can choose a different route through the ice, and an offshore structure may disconnect and move off location, or physical ice management procedures can be deployed to avoid the interaction. Once threatening ice conditions are encountered, no attempts are usually made to record the ice properties (e.g., underwater ice shape). Smaller ice features such as growlers and bergy bits having waterline length of approximately ten meters require a special consideration. This is because in high sea states, they may not be detected by the radar and could be difficult to manage. Furthermore, due to their motions in waves, they may strike above or below the ice-strengthened part or may even be thrown onto the deck of facilities.
In the existing engineering practice, there is no universally accepted procedure on how to design a structure against rare or extreme ice impact actions. The majority of the existing experimental and full-scale ice data comes from structures that are virtually rigid and thus may not be representative for the scenarios where the structure deforms. Floating ice impacts in which the structure sustains damage are in the shared-energy regime – both the ice and the structure dissipate energy through inelastic deformations. When analysts consider the shared-energy approach as a candidate for assessment of the structure’s capability to withstand a glacial ice impact, they should be aware of the uncertainties involved in the procedure. The purpose of this lecture is two-fold: to discuss procedures for damage assessment of a ship hull due to ice impacts and to develop an understanding on how the variations in input data for ice-induced damage assessment may affect the analysis..
个人简介：
Dr. Ekaterina Kim is currently working as an Associate professor in risk based marine systems design for Arctic operations; she is also an Onsager fellow at the Department of Marine technology of NTNU. She has earned her doctorate on Arctic Marine Technology from NTNU in 2014, Since then Kim has undertaken several research projects on marine environment, the current one, Norway-South Korea Consortium for Arctic Operations called the High North project. Dr. Kim has received several awards for the work, participated in the revision of ISO 19906 and has also been an active member of international committees of ISSC on Ocean Space Utilization and on Arctic Technology.
