| Application of DDA Approach to Simulation of Ice Breaking Process and Evaluation of Ice Force Acting on A Structure |
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| 作者姓名： | ZHANG Yunliang |
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| 作者单位： | State Key Laboratory of Coastal and Offshore Engineering，Dalian University of Technology，Dalian 116024，China，State Key Laboratory of Coastal and Offshore Engineering，Dalian University of Technology，Dalian 116024，China，State Key Laboratory of Coastal and Offshore Engineering，Dalian University of Technology，Dalian 116024，China，State Key Laboratory of Coastal and Offshore Engineering，Dalian University of Technology，Dalian 116024，China |
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| 基金项目： | 国家自然科学基金，国家杰出青年科学基金 |
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| 摘 要： | The sea ice is idealized as an elastic-brittle material. When an ice sheet moves toward a structure, the dynamic in-teraction between ice and the structure is analyzed by the DDA (Discontinuous Deformation Analysis) approach, where the ice sheet and the structure are considered as assemblages of blocky masses. This has the advantages that the whole process of collision between the ice and structure can be shown visually vvith a series of pictures. Meanwhile, the dynamic response of the structure at each time step after the bumping of the ice against the structure is calculated. And with the aid of inverse analysis developed by the authors, the time history of the resultant ice force exerting on the structure is evaluated. A numerical example shows that the proposed approach is suitable to the simulation of the ice-breaking process and reasonable result of ice force acting on the structure can be obtained.
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Application of DDA Approach to Simulation of Ice Breaking Process and Evaluation of Ice Force Acting on A Structure |
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| ZHANG Yunliang LIN Gao
LI Zhijun and WANG Yongxue
State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian ,China.Application of DDA Approach to Simulation of Ice Breaking Process and Evaluation of Ice Force Acting on A Structure[J].China Ocean Engineering,2002,16(3):273-282. |
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| Authors: | ZHANG Yunliang LIN Gao
LI Zhijun and WANG Yongxue
State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology Dalian China |
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| Institution: | State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | The sea ice is idealized as an elastic-brittle material. When an ice sheet moves toward a structure, the dynamic in-teraction between ice and the structure is analyzed by the DDA (Discontinuous Deformation Analysis) approach, where the ice sheet and the structure are considered as assemblages of blocky masses. This has the advantages that the whole process of collision between the ice and structure can be shown visually vvith a series of pictures. Meanwhile, the dynamic response of the structure at each time step after the bumping of the ice against the structure is calculated. And with the aid of inverse analysis developed by the authors, the time history of the resultant ice force exerting on the structure is evaluated. A numerical example shows that the proposed approach is suitable to the simulation of the ice-breaking process and reasonable result of ice force acting on the structure can be obtained. |
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| Keywords: | discontinuous deformation analysis sea ice dynamic interaction ice-induced vibration |
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