基于海冰JH-2模型的极地邮轮冰−船碰撞性能模拟分析

Simulation analysis on collision performance of polar cruise vessel based on JH-2 sea ice model

    摘要
  • 摘要:
    目的 极地邮轮在极地航行中与海面浮冰发生碰撞时，会影响船上旅客的舒适性和船舶的安全性。
    方法 基于JH-2模型建立海冰的力学模型，通过平滑粒子伽辽金−有限元耦合方法（SPG-FEM）研究极地邮轮与海冰的碰撞性能，结合海冰的等效应力和等效塑性应变研究碰撞过程中海冰的破坏模式。
    结果 结果表明：对于厚度为1.6 m的海冰冰层，极地邮轮与冰层撞击过程中海冰不会出现大的裂纹扩展现象，而只在与船艏直接接触的小范围内发生破坏；在靠近极地邮轮船艏两侧的非直接碰撞区域的海冰出现了局部应变。
    结论 研究结果可为极地邮轮乘客的舒适性和船舶的安全性设计提供技术支撑。

     

    Abstract:
    Objectives When a polar cruise vessel collides with floating sea ice, the comfortability and safety of the passengers are affected.
    Methods A mechanical model of sea ice is established on the basis of the Johnson-Holmquist-2 (JH-2) model. The collision between a polar cruise vessel and sea ice is studied using the coupling method of the smoothed particle Galerkin-finite element method (SPG-FEM). The failure mode of sea ice in the collision process is explored in combination with the equivalent stress and plastic strain of sea ice.
    Results The results show that the large crack propagation phenomenon will not appear during the collision process between a polar cruise vessel and sea ice layer when the ice is 1.6 m thick. The sea ice will only be damaged in a small range of direct contact with the bow. At both sides of the bow, local strain will appear in the indirect collision area.
    Conclusions The results of this study can provide technical support for analyzing the passenger's comfortability and safety design of polar cruise vessel.

     

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