龚榆峰, 张正艺, 刘敬喜, 董问, 解德. 基于ABAQUS的海冰单元开发及冰载荷直接计算法[J]. 中国舰船研究, 2017, 12(3): 75-85. DOI: 10.3969/j.issn.1673-3185.2017.03.011
引用本文: 龚榆峰, 张正艺, 刘敬喜, 董问, 解德. 基于ABAQUS的海冰单元开发及冰载荷直接计算法[J]. 中国舰船研究, 2017, 12(3): 75-85. DOI: 10.3969/j.issn.1673-3185.2017.03.011
GONG Yufeng, ZHANG Zhengyi, LIU Jingxi, DONG Wen, XIE De. Development of sea ice element and direct analysis method of predicting ice loads based on ABAQUS[J]. Chinese Journal of Ship Research, 2017, 12(3): 75-85. DOI: 10.3969/j.issn.1673-3185.2017.03.011
Citation: GONG Yufeng, ZHANG Zhengyi, LIU Jingxi, DONG Wen, XIE De. Development of sea ice element and direct analysis method of predicting ice loads based on ABAQUS[J]. Chinese Journal of Ship Research, 2017, 12(3): 75-85. DOI: 10.3969/j.issn.1673-3185.2017.03.011

基于ABAQUS的海冰单元开发及冰载荷直接计算法

Development of sea ice element and direct analysis method of predicting ice loads based on ABAQUS

  • 摘要:
      目的  随着全球气温的不断升高,北极冰层逐渐融化,开发利用北极航线和北极资源受到国际社会的广泛关注,各国掀起了新一轮的极地船舶建造高潮,而在极地船舶的设计过程中,如何确定船舶冰载荷显得尤为重要。近年来,采用数值方法计算极地结构受到的冰载荷逐渐成为国内外学者关注的重点,而目前的通用商业有限元软件中缺少特定用于模拟海冰力学特性的相关海冰单元,为相关数值研究工作的开展增加了困难。针对这一问题,
      方法  结合Reinicke和Remer提出的各向同性海冰失效准则,在ABAQUS二次开发平台UEL上开发用于模拟海冰失效的新型单元。在所开发的单元中引入弹性基础用以模拟浮力和重力的作用。采用典型的斜坡和圆锥结构算例并结合相关规范公式对所开发的新型单元进行验证。
      结果  对比二者之间的计算结果发现,直接计算法与规范公式的计算结果吻合较好。
      结论  所提出的直接计算法能够为冰区结构设计提供工具和一定的参考。

     

    Abstract: With the global temperature continuing to rise, the Arctic ice is melting. The development of the Arctic route and exploitation of Arctic resources are drawing the wide attention of international society. Many countries are starting a new round of the construction of polar ships. In recent years, domestic and foreign researchers have begun to focus on the numerical study of ice loads on structure. However, the current commercial finite element software lacks a specialized element used for simulating the mechanical properties of sea ice. This lack increases the difficulty of the numerical study of ice loads on structure. In this paper, based on Reinicke and Remer's elliptic failure criteria and Winkler's elastic foundation, an element has been developed to simulate the bending failure of isotropic granular ice. The ice loads of typical marine structures, such as slope structure and conical structure, are calculated through the direct analysis method with the developed element. A comparison between the results of the direct analysis method and analytical method show good agreement. In brief, the proposed direct analysis method may provide tools and certain references for structural design in an ice environment.

     

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