模拟船舶螺旋桨上的冰载荷及其与实际测量值的比较

IF 4 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures Pub Date : 2025-07-03 DOI:10.1016/j.marstruc.2025.103879

Jorrid Lund, Lina Sapp, Jan Manuel Kubiczek, Angelo Mario Böhm, Franz von Bock und Polach

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引用次数: 0

摘要

提出了一种更好地估算船舶螺旋桨上冰载荷的方法。基于在北极地区进行的测量，修改了基于Mohr-Coulomb节点分裂方法的现有冰破坏模型，以更好地代表极地冰与实验室冰相比强度较低的情况。利用修正的海冰材料模型，计算了“阿古拉斯二号”科考船螺旋桨与海冰相互作用时的螺旋桨扭矩和载荷谱。为此，采用破冰模拟的方法，对撞击该船螺旋桨的冰尖的大小和形状进行了估计。接下来，利用改进的莫尔-库仑节点劈裂模型进行了一组螺旋桨-冰相互作用的有限元模拟。在此基础上，计算了载荷谱，并与S.A. Agulhas II螺旋桨轴上的实测扭矩进行了比较。成功的再现表明了该方法的适用性，可以更好地估计冰对螺旋桨施加的载荷。

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Simulated ice loads on a ship propeller and comparison with full-scale measurements

A methodology to better estimate the loads of ice acting on the propeller of a ship is developed. Based on measurements conducted in the North Pole region, an existing failure model for ice based on the Mohr–Coulomb nodal split approach is modified to better represent the lower strength of polar ice compared to laboratory ice. The modified material model for the sea ice is used to compute the propeller torque and a load spectrum for the propeller-ice interaction of the research ship S.A. Agulhas II. To this end, a floe-ice breaking simulation is used to estimate the size and shape of the ice cusps hitting the propeller of this ship. In the next step, a set of finite element simulations of the propeller-ice interaction utilizing the modified Mohr–Coulomb nodal split model is conducted. Based on this, the load spectrum is computed and compared with the measured torque on the propeller shaft of the S.A. Agulhas II. The successful reproduction shows the applicability of the approach to better estimate the loads exerted by the ice on the propeller.

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来源期刊

Marine Structures 工程技术-工程：海洋

CiteScore

8.70

自引率

7.70%

发文量

157

审稿时长

6.4 months

期刊介绍： This journal aims to provide a medium for presentation and discussion of the latest developments in research, design, fabrication and in-service experience relating to marine structures, i.e., all structures of steel, concrete, light alloy or composite construction having an interface with the sea, including ships, fixed and mobile offshore platforms, submarine and submersibles, pipelines, subsea systems for shallow and deep ocean operations and coastal structures such as piers.