Multiphysical analysis system for deformation and fracture behavior of sea ice considering thermal changes under various scales

2018 Fiscal Year Final Research Report

• Project/Area Number: 16K06525
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Hydraulic engineering
• Research Institution: Public Works Research Institute
• Principal Investigator: Kioka Shinji 国立研究開発法人土木研究所, 土木研究所(寒地土木研究所), 主任研究員 (20414154)
• Project Period (FY): 2016-04-01 – 2019-03-31
• Keywords: 海氷 / 破壊 / 個別要素法 / 有限要素法 / 変形 / 熱

Outline of Final Research Achievements

We developed a fundamental and multiphysical analysis system for the interaction between sea ice and ship hull, marine structures, seabed and others, which can uniformly simulate the mechanical diversity and/or forms of sea ice from “continuum behavior” such as deformation of ice sheet to “discrete or non-continuum behavior” such as crack propagation, fracture and dynamic behavior of a large amount of ice fragments, and the numerical model can also consider the ice condition such as thermal shrinkage and expansion due to the thermal environmental changes.

Free Research Field

氷工学，海岸工学

Academic Significance and Societal Importance of the Research Achievements

急務とされている氷海域での津波防災対策，そして北極海航路や鉱物・石油天然ガス等の海底資源採掘などの北極海・亜極地開発にとって必要不可欠な高精度の海氷漂流予測ならびに構造物の安全性評価，海氷の利活用や共存のためのアイスマネージメント等への応用が期待される．