Mamontov A.

ANDREY MAMONTOV, Candidate of Engineering Sciences, Associate Professor, Department of Shipbuilding & Ocean Engineering, School of Engineering, e-mail: mamontov.ai@dvfu.ru
Far Eastern Federal University 
8 Sukhanova St., Vladivostok, 690091, Russia

Determination of ice dynamic crush pressure based on the limit material model

Abstract: The article analyzes the pressure of ice on a ship's hull, and determines the ice pressure dependent on the angle of inclination of the crush plane. An experiment of dropping the indenters on the ice surface has been performed; where each indenter has the form of two inclined planes (their inclination is different) forming a sharp wedge. At the contact point of the indenter with ice, as a result of the impact, the ice was dynamically squashed (crushed). The impact pressure is determined by the depth of indentation.

The limit model of the material has been developed by the experimental dependence of the ice crushing pressure on the angle of inclination of the planes. On the basis of the limit model, a theoretical calculation of the ice crushing pressure has been made. The result of the calculation is presented as the dependence of pressure on the angle of inclination of the planes. The obtained function completely coincides with the experimental one.

Keywords: crush strength of ice, local ice pressure, dynamic crush, limit model.

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