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| Damage Evolution of Bow Structure under Low Temperature and Extreme Load |
| Received:July 07, 2023 Revised:August 19, 2023 |
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| DOI：10.7643/issn.1672-9242.2023.09.008 |
| KeyWord:low-temperature damage evolution numerical simulation extreme load constitutive model bow structure |
| Author | Institution |
| ZHAO Nan |
China Ship Scientific Research Center, Jiangsu Wuxi , China;Taihu Laboratory of Deepsea Technological Science, Jiangsu Wuxi , China |
| WANG Gao-fei |
China Ship Scientific Research Center, Jiangsu Wuxi , China |
| GE Xin-xin |
China Ship Scientific Research Center, Jiangsu Wuxi , China |
| LI Fei |
China Ship Scientific Research Center, Jiangsu Wuxi , China |
| ZHANG Zhan-yang |
China Ship Scientific Research Center, Jiangsu Wuxi , China |
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| Abstract: |
| The work aims to obtain the effect of main parameters of ship bow structure under extreme loads such as icebergs on the evolution process of structural damage when ships sail in the polar low-temperature extreme environment, and reveal the collapse failure mechanism of ship bow structure. With ship bow structure as the research object, and based on numerical simulation. The effects of different collision scenarios, ambient temperature, impact velocity, plastic strain of ice, material constitutive model of ships, impact angle and other parameters on structural damage were studied. A simplified numerical simulation model was established, and the effects of different parameters on structural damage were obtained. The material model has little effect on the damage of hull structure. With the increase of speed and impact angle, the damage range of hull increases. The damage range of the hull structure decreases with the increase of the material properties and the stiffness of the impact zone. The damage evolution simulation method developed in this paper can provide technical means for ship structure damage evolution analysis in the polar extreme environment. |
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