Author: V.K. Rumb
Abstract
The article describes the role of shafting in a ship's thruster-engine complex, presenting a methodology that allows to predict the strength and durability of shafting for icebreakers and ice-going ships at the design stage. Physical and theoretical description of propeller blades interaction with ice floe with respect to the loads that occur is also given. The formulas for determination of impact forces are derived. The article also describes the mechanism of transfer of ice loads on shaftings under different operating conditions. The main provisions of the numerical simulation are given, allowing to simulate the occasional impact and vibrational process in shafting. Special attention is given to the mechanics of destruction of parts due to fatigue damage accumulation. The theoretical background is based on endurance of ship shafting with the variation of shafting material strength characteristics and the stresses acting in them. It is also demonstrated how to use the presented techniques to predict the durability of shafting. The applicability of the method is illustrated by calculation examples.
Keywords: propeller, ice floe, simulation, ice load, shafting, strength, durability.
References
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About author:
Rumb Victor - PhD, professor, St. Petersburg State Marine Technical University, 3, Lotsmanskaya str., 190121, St. Petersburg, Russia, e-mail: vkrumb@mail.ru
Issue: 50/51 (2018)
For citation: V.K. Rumb. Simulation prediction of the strength and durability of shaftings for icebreakers and ice-going ships. Research Bulletin by Russian Maritime Register of Shipping. 2018, No. 50/51, pp. 53-62.
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