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Influence of bow design on ice breaking resistance

机译：船首设计对耐破冰性的影响

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One of the main contributions to the resistance in level ice is the breaking force which is mainly influenced by the bow shape, beside ice properties and the ship's speed. Understanding the influence of the bow shape on the ice breaking resistance is essential for the assessment of the hull form in an early design stage. However, at a first glance the bow shapes of modem ice breaking vessels seem to be quite similar. Thus, a need exists to evaluate the contribution of the ice breaking force to the resistance in ice methodically for different bow shapes. Since model tests are still the most reliable resistance prediction method, they form the basis for the analysis of the ice breaking process at the bow. Specifically, breaking patterns and geometric bow parameters are investigated. The findings are compared with the selected semi-empirical method of Lindqvist On this basis the Lindqvist approach is evaluated with further model test results and theoretical considerations. Finally, refinements of the Lindqvist formula are suggested where appropriate based on the analysis. (c) 2016 Elsevier Ltd. All rights reserved.
机译：抗冰能力的主要贡献之一是断裂力，该断裂力主要受船首形状的影响，此外还具有冰的性质和船速。在设计的早期阶段，了解船首形状对耐破冰性的影响对于评估船体形状至关重要。但是，乍一看，现代破冰船的船头形状似乎非常相似。因此，存在对于不同弓形有条不紊地评估破冰力对冰阻力的贡献的需求。由于模型测试仍然是最可靠的阻力预测方法，因此它们构成了船首破冰过程分析的基础。具体而言，研究了断裂模式和几何弓形参数。将结果与Lindqvist选择的半经验方法进行比较。在此基础上，通过进一步的模型测试结果和理论考虑对Lindqvist方法进行评估。最后，根据分析结果，建议对Lindqvist公式进行细化。 （c）2016 Elsevier Ltd.保留所有权利。

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