武文华, 于佰杰, 许 宁, 岳前进. 海冰与锥体抗冰结构动力作用的数值模拟[J]. 工程力学, 2008, 25(11): 192-196.
引用本文: 武文华, 于佰杰, 许 宁, 岳前进. 海冰与锥体抗冰结构动力作用的数值模拟[J]. 工程力学, 2008, 25(11): 192-196.
WU Wen-hua, YU Bai-jie, XU Ning, YUE Qian-jin. NUMERICAL SIMULATION OF DYNAMIC ICE ACTION ON CONICAL STRUCTURE[J]. Engineering Mechanics, 2008, 25(11): 192-196.
Citation: WU Wen-hua, YU Bai-jie, XU Ning, YUE Qian-jin. NUMERICAL SIMULATION OF DYNAMIC ICE ACTION ON CONICAL STRUCTURE[J]. Engineering Mechanics, 2008, 25(11): 192-196.

海冰与锥体抗冰结构动力作用的数值模拟

NUMERICAL SIMULATION OF DYNAMIC ICE ACTION ON CONICAL STRUCTURE

  • 摘要: 结合渤海海冰的实际情况,应用显式动力分析软件LS-DYNA模拟海冰和海洋平台锥体抗冰结构相互作用的弯曲断裂过程。模拟结果展示出和现场观测一致的弯曲断裂过程,海冰断裂长度和冰力分布符合现场实测数据结果。平台结构所受最大冰力出现在环向裂纹出现时;通过分析不同冰速对断裂长度、冰力和平台响应的影响可以发现断裂长度对冰速变化并不敏感,对海冰破碎周期有明显的影响。

     

    Abstract: Using explicit dynamic analysis software LS-DYNA, the paper implements the numerical simulations of bending failure processes between sea ice and conical structures. The simulated breaking length and ice force distributions are consistent with those of full scale experiments. Ice force reaches its maximum value when the circumferential crack appears in the bottom of ice sheet. By analyzing the simulation results, it is found that the breaking length, ice force and responses of platform are not sensitive to the variations of ice velocity. The frequency of ice breaking increases with the increasing of ice velocity.

     

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