Scaling relationships for icebreaking based on analysis of a simple wedge

• Main Authors: Spencer, D., McKenna, R. F.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: 1993
• Subjects: ice resistance; lateral pressure; model tests; Arctic; Ice Sheet
• Online Access: https://nrc-publications.canada.ca/eng/view/object/?id=c6c12504-faba-4951-9bd6-6e084fdac108; https://nrc-publications.canada.ca/fra/voir/objet/?id=c6c12504-faba-4951-9bd6-6e084fdac108

The resistance of a ship proceeding in level ice is the result of a combination of ice breaking processes. Foremost is the interaction of the hull with the ice resulting in the failure of the ice sheet. This process involves a combination of ice crushing and shearing until sufficient contact area is generated to fail the ice sheet by flexure. The resistance is the time average of these processes and thus depends on the energy consumed by them. By examining the energy during interaction of an inclined indenter with a simple ice wedge certain ice scaling laws have been derived. The influence of hull-ice friction is also examined. Finally, results are presented showing the energy balance for typical ice breaking conditions. Peer reviewed: Yes NRC publication: Yes