TRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE

Science journal

 
ISSN (print) 2542-2324 /(online) 2618-8244


Articles of The Transactions of KSRC








Investigating the interaction of multi-support structure with ice



Full text article (in russian)

Year

 
2012

Issue

 
354

Volume

 
5

Pages

 
69-82

Caption

 
Investigating the interaction of multi-support structure with ice

Authors

 
E. Karulin, M. Karulina, E. Toropov, D. Yemelyanov

Keywords

 
multi-support structure, ice loads, broken ice, simulation, discrete element method

Summary

 
The interaction of multi-support structures with broken ice might be accompanied by such adverse effects as 1) one or several ice floes clogging the clearance between the front supports or 2) inner space between the supports is cramped with ice. To investigate these effects, as well as their influence on ice loads, KSRI has performed model tests and generated a numerical model of interaction between multi-support structure and ice basing on the method of discrete elements. Good correlation between analytical and experimental results allowed expanding the range of scenarios under investigation and obtaining the relationship between the strength of ice effect on multi-support structure and ice floe dimensions and broken ice concentration.
The studies have shown that ice loads caused by broken ice are about 15-20 times lower than those caused by continuous ice of the same thickness. Numerical simulation has shown that ice floe dimensions have less effect on the ice force than ice concentration: if characteristic dimensions of ice floes nearly double, the load grows by approximately 40%, whereas two-fold reduction in ice concentration decreases the ice load by approximately 3.5 times. The results can be used to develop the plan of ice management near the multi-support structure so as to reduce the ice load it has to resist.

Rubrics

 
Ship design and structure

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