| 海冰与锥体抗冰结构动力作用的数值模拟 |
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| 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). |
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| 作者姓名： | 武文华 于佰杰 许宁 岳前进 |
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| 作者单位： | 大连理工大学工业装备结构分析国家重点实验室,大连116024 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，国家自然科学基金 |
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| 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。
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| 关 键 词： | 动力作用 海冰 锥体平台 数值模拟 弯曲断裂过程 |
NUMERICAL SIMULATION OF DYNAMIC ICE ACTION ON CONICAL STRUCTURE |
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| 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). |
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| Authors: | WU Wen-hua YU Bai-jie XU Ning YUE Qian-jin |
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| Affiliation: | State Key Laboratory of Structural Analysis of Industrial Equipment;Dalian University of Technology;Dalian 116024;China |
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| 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 ... |
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| Keywords: | dynamic interaction sea ice conical platform numerical simulation flexural failure process |
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