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A numerical model for dynamic ice–structure interaction

✍ Scribed by T. Kärnä; K. Kamesaki; H. Tsukuda

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
348 KB
Volume
72
Category
Article
ISSN
0045-7949

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✦ Synopsis

This paper describes a numerical method for ice load determination in conditions where a drifting ice ¯oe acts on a vertical oshore structure. The model is based on a substructure technique where separate dynamic models of the interacting media and components are combined by a computer model. First, FE technique is used to model the structure. Second, complex impedance functions are used to consider the stiness and damping properties of the foundation. Third, the action of the drifting ice ¯oe is considered in two phases by adopting separate models for the elastic far ®eld area and a nonlinear near ®eld area adjacent to the ice±structure interface.

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