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船舶与海洋平台结构冰载荷的高性能扩展多面体离散元方法

刘璐 尹振宇 季顺迎

刘璐, 尹振宇, 季顺迎. 船舶与海洋平台结构冰载荷的高性能扩展多面体离散元方法[J]. 力学学报, 2019, 51(6): 1720-1739. doi: 10.6052/0459-1879-19-250
引用本文: 刘璐, 尹振宇, 季顺迎. 船舶与海洋平台结构冰载荷的高性能扩展多面体离散元方法[J]. 力学学报, 2019, 51(6): 1720-1739. doi: 10.6052/0459-1879-19-250
Liu Lu, Yin Zhenyu, Ji Shunying. HIGH-PERFORMANCE DILATED POLYHEDRAL BASED DEM FOR ICE LOADS ON SHIP AND OFFSHORE PLATFORM STRUCTURES[J]. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(6): 1720-1739. doi: 10.6052/0459-1879-19-250
Citation: Liu Lu, Yin Zhenyu, Ji Shunying. HIGH-PERFORMANCE DILATED POLYHEDRAL BASED DEM FOR ICE LOADS ON SHIP AND OFFSHORE PLATFORM STRUCTURES[J]. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(6): 1720-1739. doi: 10.6052/0459-1879-19-250

船舶与海洋平台结构冰载荷的高性能扩展多面体离散元方法

doi: 10.6052/0459-1879-19-250
基金项目: 1) 国家重点研发计划重点专项(2017YFE0111400);国家重点研发计划重点专项(2016YFC1401505);国家自然科学基金项目资助(51639004);国家自然科学基金项目资助(41576179)
详细信息
    通讯作者:

    季顺迎

  • 中图分类号: O343.3,U66

HIGH-PERFORMANCE DILATED POLYHEDRAL BASED DEM FOR ICE LOADS ON SHIP AND OFFSHORE PLATFORM STRUCTURES

  • 摘要: 船舶与海洋平台结构的冰载荷是寒区海洋工程结构物设计中的关键参数,而离散元方法是有效计算结构冰载荷的重要手段. 本文采用基于闵可夫斯基和原理的扩展多面体离散元方法模拟船舶与海洋平台结构的相互作用过程. 其中,构造扩展多面体的近似包络函数并建立了基于优化模型的快速接触搜索算法;考虑单元间粘结作用的刚度软化过程建标识码元间的粘结-破碎模型. 同时,发展了 CPU-GPU 协同异构环境下的高性能并行算法. 为分析海冰与海洋结构作用中的冰载荷,采用ISO标准验证了扩展多面体离散元分析结构冰载荷的准确性. 采用离散元方法计算了船舶结构的冰载荷,研究了船舶结构表明的线载荷分布特点,并采用船舶结构冰阻力经验公式验证了计算结果的合理性. 采用离散元方法计算了平整冰区与多桩腿平台结构的相互作用,分析各桩腿上的冰载荷特点. 针对碎冰区的海冰管理过程,采用离散元方法分析了船舶结构绕行过程中的船舶和海洋平台结构冰载荷. 本文方法可有效应用于海洋结构冰载荷分析,能为极地船舶与海洋平台结构的设计和安全运行提供科学的分析手段.

     

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  • 收稿日期:  2019-08-31
  • 刊出日期:  2019-11-18

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