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RESEARCH PAPERS: Arctic Engineering

Failure Analysis of Impacting Ice Floes

[+] Author and Article Information
S. U. Bhat

Amoco Production Company, Tulsa Research Center, Tulsa, OK 74102

S. K. Choi

Daewoo Shipbuilding and Heavy Industry Company, Korea

T. Wierzbicki, D. G. Karr

Department of Ocean Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139

J. Offshore Mech. Arct. Eng 113(2), 171-178 (May 01, 1991) (8 pages) doi:10.1115/1.2919914 History: Received August 01, 1989; Revised August 07, 1990; Online June 12, 2008

Abstract

Failure analysis of an ice floe impacting on a fixed arctic offshore structure has been carried out. The ice floe has been idealized to be an edge-loaded, inertia-driven, thin circular disk made of an elastic-brittle material obeying the Drucker-Prager failure envelope. The location of failure initiation and the associated load have been calculated. Fracture mechanics of global splitting of the floe by crack propagation has been presented. An appropriate limit analysis solution of the problem has also been developed. A comparison of the various results developed in the paper leads to some interesting conclusions.

Copyright © 1991 by The American Society of Mechanical Engineers
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