ON THE DYNAMIC INTERACTION BETWEEN DRIFTING LEVEL ICE AND MOORED DOWNWARD CONICAL STRUCTURES: A CRITICAL ASSESSMENT OF THE APPLICABILITY OF A BEAM MODEL FOR THE ICE

• Main Authors: Sjoerd F. Wille, Guido L. Kuiper, Andrei V. Metrikine
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Arctic
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.661.966; http://proceedings.asmedigitalcollection.asme.org/pdfaccess.ashx?PDFSource%3D13%26ResourceID%3D5305169

Downward conical structures are believed to be an interesting concept of a floating host for oil and gas developments in deeper Arctic waters. The conical structure forces the ice to fail in bending, thereby limiting the ice loads on the structure. During the last two years, several conical structures were investigated at the Hamburg Ship Model Basin (HSVA) as part of a Joint Industry Project. This paper presents a numerical model for drifting level ice interacting with a moored downward conical structure. The goal of this development was to get insight in the key processes that are important for the interaction process between moving ice and a floating structure. The level ice is modelled as a moving Euler-Bernoulli beam, whereas the moored offshore structure is modelled as a damped mass-spring system. The ice-