Abst'/> Simulation of ship navigation in ice rubble based on peridynamics
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Simulation of ship navigation in ice rubble based on peridynamics

机译：基于外围动力学的冰瓦砾中船舶导航仿真

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AbstractPeridynamic theory has been applied satisfactorily to crack and damage in massive materials and structures. The use of peridynamics to calculate ice loads and simulate the ship–ice interaction process is introduced. The ice–material property, ice–rubble model, and the ship–ice contact model for the calculation program are investigated. Several cases are studied in terms of different ice rubble sizes, concentrations of ice rubble, and sailing speeds. Major characteristics can be obtained, including dynamic crack generation and propagation of ice rubble, and sliding, rotation and accumulation of broken ice; these are observed commonly in polar and Arctic activities. Crack generation and propagation are obtained naturally without setting extra criteria for crack extension, pre–existing crack routes, or crack branching. The capability of this approach is validated by comparison with available experimental results for calculating ice load and the ice–breaking process.Highlights•The micro-parameterss0c=0.003133,s0b=0.000625obtained by compression test and bending test can simulate ice mechanical characteristics.•Ice rubber model is investigated using Voronoi diagram algorithm.•Several cases are studied with different ice rubble average sizes, concentrations and sailing speeds.
机译： 摘要 介绍了使用周边动力学来计算冰负荷并模拟船冰相互作用过程的方法。研究了用于计算程序的冰物质特性，冰砾模型和船冰接触模型。根据不同的碎冰尺寸，碎冰浓度和航行速度研究了几种情况。可以获得主要特征，包括动态裂纹的产生和冰瓦砾的传播，以及碎冰的滑动，旋转和积累；这些通常在极地和北极活动中观察到。裂纹的产生和扩展是自然而然的，而无需为裂纹扩展，先前存在的裂纹路径或裂纹分支设置额外的标准。通过与可用于计算冰负荷和破冰过程的实验结果进行比较，验证了此方法的能力。 突出显示 • 微观参数 s 0 < /mml:mn>c=0.003133 ， s 0 b = 0.000625 可以模拟冰的力学特性。 < ce：label>• 使用Voronoi图算法研究了冰橡胶模型。 • 研究了几例使用不同碎冰平均尺寸的情况，浓度和航行速度。

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