随着北极冰川的不断融化扩散,极地航行船舶与浮冰的碰撞不可避免,而浮冰分布变化是影响船-冰碰撞的重要因素之一。目前对于浮冰分布的研究多是基于图像数据识别,在模拟计算中多简化为规则方形冰块,这与实际浮冰分布与形状有着明显区别。为此,本文基于幂律分布理论与浮冰形状特征在ANSYS/LS-Dyna软件中编写子程序生成浮冰场,以此为基础,基于环境边界的流-固耦合法,建立极地航行船舶、浮冰场与流场耦合模型,解决船舶与浮冰漂浮问题,进而开展船-冰碰撞数值仿真计算,得到碰撞过程中浮冰的运动情况、船-冰碰撞载荷、船体损伤变形及各构件的吸能等参数,全面分析了船舶与浮冰多次、连续碰撞过程中的耦合作用规律。本文研究成果可为极地航行船舶安全性设计提供参考。
Abstract
With the Arctic glaciers continue to melt and spread, collisions between polar ships and floating ice are inevitable. The change in the distribution of floating ice is one of the important factors affecting ship-ice collision. At present, studies on the distribution of floating ice are mostly based on image data recognition, and it is mostly simplified as regular square ice in the simulation calculation, which is different from the actual distribution and shape of floating ice. Therefore, this paper written subroutines that generated the ice field based on the theory of power-law distribution and the characteristics of ice shape in ANSYS/LS-Dyna software. On this basis, the coupling model of the polar ships, the broken ice field, and the flow field are established. The fluid-structure interaction (FSI) method and the environment border are applied to solve the floating-issue of ships and ice floes collision. Through the numerical simulation calculation of ship-ice floes collision, the results show that the changes of parameters in the process of the ship-ice floes collision that the situation of ice floes movement, the load of ship collision, damage deformation, and the energy absorption of hull structures. The coupling rule between ship and ice in the process of much time and continuous collision is analyzed. Therefore, the research results in this paper can provide a reference for the safety design of polar navigating ships.
关键词
船-冰碰撞 /
浮冰概率分布 /
流体-结构耦合法 /
数值模拟
{{custom_keyword}} /
Key words
Ship-Ice Collision /
Probability Distribution of Floating Ice /
Fluid-Structure Coupling Method /
Numerical Simulation
{{custom_keyword}} /
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] Wang, J.Y. and Derradji-Aouat, A., 2010. Ship Performance in Broken Ice Floes–Preliminary Numerical Simulations, Institute for Ocean Technology, National Research Council, St. John’s, NL, Canada.
[2] Matsushita M. Fractal viewpoint of fracture and accretion[J]. Journal of the Physical Society of Japan, 1985, 54(3):857-860.
[3] Lu P, Li Z J, Zhang Z H, et al. Aerial observations of floe size distribution in the marginal ice zone of summer Prydz Bay[J]. Journal of Geophysical Research: Oceans, 2008, 113(C2).
[4] Stern H L, Schweiger A J, Stark M, et al. Seasonal evolution of the sea-ice floe size distribution in the Beaufort and Chukchi seas[J]. Elementa, 2018, 6(1): 48.
[5] Guo C, Zhang Z, Tian T, et al. Numerical simulation on the resistance performance of ice-going container ship under brash ice conditions[J]. China Ocean Engineering, 2018, 32(5): 546-556.
[6] Yulmetov R, Lubbad R, Løset S. Planar multi-body model of iceberg free drift and towing in broken ice[J]. Cold Regions Science and Technology, 2016, 121: 154-166.
[7] Song M, Kim E, Amdahl J, et al. Numerical Investigation of Fluid-Ice-Structure Interaction During Collision by an Arbitrary Lagrangian Eulerian Method[C]//ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2016: V008T07A017-V008T07A017.
[8] 郭春雨, 李夏炎, 王帅, 等. 冰区航行船舶碎冰阻力预报数值模拟方法[J]. 哈尔滨工程大学学报, 2016, 37(2): 145-150.
Guo Chunyu, Li Xiayan, Wang Shuai, et al. A numerical simulation method for resistance prediction of ship in pack ice[J]. Journal of Harbin Engineering University, 2016, 37(2): 145-150.
[9] 翟帅帅, 高俊. 基于Derradji-Aouat 海冰本构模型的船冰碰撞数值模拟[J]. 船舶设计通讯, 2016, 1.
Zhai Shuaishuai, Gao jun, Numerical Simulation of Interaction between Icebreakers and Ice Based on Derradji-Aouat Ice Constitutive Model[J]. JOURNAL OF SHIP DESIGN,2016, 1
[10] Zhu L, Qiu X, Chen M, et al. Simplified ship-ice collision numerical simulations[C]//The 26th International Ocean and Polar Engineering Conference. International Society of Offshore and Polar Engineers, 2016.
[11] Kim J H, Kim Y, Kim H S, et al. Numerical simulation of ice impacts on ship hulls in broken ice fields[J]. Ocean Engineering, 2019, 180: 162-174.
[12] Stern H L, SCHWEIGER A J,ZHANG J,et al. On reconciling disparate studies of the sea-ice floe size distribution[J]. Elementa: Science of the Anthropocene, 2018, 6(1): 49.
[13] 周颖, 匡定波, 巩彩兰, 等. 风云三号卫星 MERSI 影像提取北极海冰参数的方法[J]. 红外与毫米波学报, 2017, 36(1): 41-49.
Zhou Ying, Kuang Dingbo, Gong Cailan, et al. A method to extract parameters of Arctic sea ice from FY-3 /MERSI imagery[J]. Journal of Infrared and Millimeter Waves, 2017, 36(1): 41-49.
[14] Wang Y, Holt B, Erick Rogers W, et al. Wind and wave influences on sea ice floe size and leads in the Beaufort and Chukchi Seas during the summer-fall transition 2014[J]. Journal of Geophysical Research: Oceans, 2016, 121(2): 1502-1525.
[15] Di Noto G. Observations and modeling of the Marginal Ice Zone[D]. Bologna :Università di Bologna,2016.
[16] 马德毅. 中国第五次北极科学考察报告[M]. 海洋出版社, 2013.
Ma Deyi, The report of 2012 chinese arctic research expedition [M]. Ocean press, 2013.
[17] 张健, 何文心, 元志明, 陈聪. 船冰碰撞载荷下船舶结构加强方案研究[J]. 船舶力学, 2016, 20(06): 722-735.
Zhang J, He WX, Yuan ZM, et al. Study on the structural strengthening design under the ship-ice collision Load[J]. Journal of Ship Mechanics, 2016, 20(06): 722-735.
[18] 涂勋程. 极地物探船冰阻力预报及参数敏感性研究[D]. 江苏科技大学, 2019.
Tu XC. Ice Resistance Prediction and Parameters Sensitivity Study for Polar Geophysical Prospecting Vessel[D]. Jiangsu University Of Science And Technology, 2019.
[19] Paik J K, Kim B J, Park D K, et al. On quasi-static crushing of thin-walled steel structures in cold temperature: Experimental and numerical studies[J]. International Journal of Impact Engineering, 2011, 38(38):13-28.
[20] 高岩. 冰材料模型与局部形状对船冰碰撞影响研究[D]. 2015.
Gao y. An elastic-plastic ice material model and iceberg shape sensitivity analysis for ship-iceberg collision[D]. 2015.
[21] 宋祖厂, 陈建民. 海冰与独腿简易平台碰撞动力分析[J]. 中国海洋平台, 2009, 24(2): 19-22.
Song Zuchang, Chen Jianmin, Dynamic analysis of the collision between sea-ice and single-pile simple platform[J]. china offshore platform, 2009, 24(2): 19-22.
{{custom_fnGroup.title_cn}}
脚注
{{custom_fn.content}}