Arctic platforms have sloped surfaces near waterline to reduce the ice impact on the structure by ice failure in bending. In this paper, authors developed a computer program which can solve the dynamic interactions between moored floating platforms and drifting level ice in time domain. To model the fracture of level ice, the discrete element method with the parallel bonding model is employed. The hydrodynamics of moored platform is solved by time-domain boundary element method. To solve the fully-coupled ice-floater-mooring dynamics, the two computer programs are externally coupled at each time step. A series of numerical simulations are performed with varying ice velocities. The time-series and spectra of the ice loads and platform motions are obtained both in time and frequency domains and their statistical values are compared with those from the experimental data. The simulated results are also compared with simpler theoretical methods for fixed conical structures. The mean and maximum values from the present simulations are compared reasonably well against the experimental results considering all kinds of uncertainties related to model-ice properties and randomness/non-repeatability of breaking and fragmentation. Interesting physics of ice-force lock-in near some range of surge natural frequency is successfully illustrated by the present numerical simulation.

北极平台在吃水线附近有倾斜的表面，以减少冰在弯曲时破坏对结构的影响。在本文中，作者开发了一种计算机程序，可以在时域中解决系泊浮动平台和漂流冰之间的动态相互作用。为了模拟水平冰的破裂，采用具有平行结合模型的离散元方法。系泊平台的水动力问题采用时域边界元法求解。为了解决完全耦合的浮冰船系泊动力学问题，两个计算机程序在每个时间步都进行外部耦合。一系列数值模拟是在不同冰速下进行的。在时域和频域中获得冰载荷和平台运动的时间序列和频谱，并将其统计值与实验数据进行比较。模拟结果还与固定圆锥结构的更简单的理论方法进行了比较。考虑到与模型冰特性以及破裂和破碎的随机性/非重复性相关的各种不确定性，将当前模拟的平均值和最大值与实验结果进行了合理的比较。目前的数值模拟成功地说明了在某些浪涌固有频率范围附近冰力锁定的有趣物理现象。考虑到与模型冰特性以及破裂和破碎的随机性/非重复性相关的各种不确定性，将当前模拟的平均值和最大值与实验结果进行了合理的比较。目前的数值模拟成功地说明了在某些浪涌固有频率范围附近冰力锁定的有趣物理现象。考虑到与模型冰特性以及破裂和破碎的随机性/非重复性相关的各种不确定性，将当前模拟的平均值和最大值与实验结果进行了合理的比较。目前的数值模拟成功地说明了在某些浪涌固有频率范围附近冰力锁定的有趣物理现象。