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<p>Sea ice exhibits complex mechanical properties, and no unified constitutive model currently exists. This study establishes an elastoplastic sea ice constitutive model based on non-ordinary state-based Peridynamics (PD) and the Tsai-Wu yield criterion, applying force state calculations to sea ice collisions while mitigating zero energy modes. A Fortran program implements the elastic-plastic constitutive equation of PD to simulate spherical ice-steel plate collisions. The program’s accuracy in simulating sea ice collisions is validated through comparison with finite element results. Using the established model, this study simulates collisions between vertical structures and layer ice, analyzing the effects of impact velocity, vertical structure size, and critical elongation on sea ice load. The findings demonstrate positive correlations between collision force and impact velocity, vertical structure size, and critical elongation. At high velocities, impact significantly affects collision force, primarily following a quadratic function, while vertical structure effects exhibit a linear relationship.</p>

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Simulation of Impact Load Using Elastic Plastic Sea Ice Model Based on Peridynamics

  • 期刊论文

  • 发表日期：

    2025年12月27日

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  • An-lun Li,
  • Yan Zhang,
  • Wei-dong Zhao,
  • Bin Guo,
  • Geng-xin Chen

摘要

Sea ice exhibits complex mechanical properties, and no unified constitutive model currently exists. This study establishes an elastoplastic sea ice constitutive model based on non-ordinary state-based Peridynamics (PD) and the Tsai-Wu yield criterion, applying force state calculations to sea ice collisions while mitigating zero energy modes. A Fortran program implements the elastic-plastic constitutive equation of PD to simulate spherical ice-steel plate collisions. The program’s accuracy in simulating sea ice collisions is validated through comparison with finite element results. Using the established model, this study simulates collisions between vertical structures and layer ice, analyzing the effects of impact velocity, vertical structure size, and critical elongation on sea ice load. The findings demonstrate positive correlations between collision force and impact velocity, vertical structure size, and critical elongation. At high velocities, impact significantly affects collision force, primarily following a quadratic function, while vertical structure effects exhibit a linear relationship.