考虑初始缺陷的平整冰-锥体结构碰撞数值模拟

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摘要

基于非线性有限元数值方法，对含初始缺陷的平整冰与锥体结构碰撞场景进行了模拟。将标记为初始缺陷的实体冰单元从平整冰模型中删除，并将黏聚单元插入到实体冰单元之间。在实尺度下对平整冰与锥体碰撞场景进行了数值模拟，分析了平整冰的断裂破坏模式并预报了锥体所受冰载荷，并将数值模拟结果与不考虑初始缺陷的数值模拟结果进行了比较。分别分析了初始缺陷分布位置和含量对锥体所受冰载荷的影响。结果表明，初始缺陷对于平整冰的断裂破坏模式和冰载荷均有重要的影响。

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	卢腾超1
	邹早建1
	2
	王阳1
	王峰1
	石础1

关键词 ：平整冰-锥体结构碰撞, 初始缺陷, 断裂破坏模式, 黏聚单元模型, 冰载荷

Abstract：

Based on the nonlinear finite element method,the collision between level ice and a conical structure was simulated considering initial defects in ice.First,the ice bulk elements labeled as “with initial defects” were deleted from the ice model, and cohesive elements were inserted in between the ice bulk elements.Then,the scenario of collision between level ice and the conical structure was simulated in full scale.The fracture failure mode of level ice and the ice loads on the conical structure were analyzed, and compared with the simulated results without considering initial defects in ice.Finally, the effects of the distribution and percentage of initial defects in ice on the ice loads were analyzed respectively.The results show that the initial defects in ice have a significant effect on both the fracture failure mode of level ice and theice loads on the conical structure.

Key words： level ice-conical structure collision initial defect;fracture failure mode cohesive element model ice load

收稿日期: 2019-07-22 出版日期: 2021-03-28

引用本文:

卢腾超1，邹早建1，2，王阳1，王峰1，石础1. 考虑初始缺陷的平整冰-锥体结构碰撞数值模拟[J]. 振动与冲击, 2021, 40(6): 250-256.
LU Tengchao1， ZOU Zaojian1,2, WANG Yang1, WANG Feng1, SHI Chu1. Numerical simulation of level ice-conical structure collision considering initial defects in ice. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(6): 250-256.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2021/V40/I6/250

［1］PALMERA, GOODMAN D, ASHBY M, et al.Fracture and its role in determining ice forces on offshore structures［J］.Annals of Glaciology, 1983, 4(1): 216-221.
［2］ZOUB, XIAO J, JORDAAN I J.Ice fracture and spalling in ice-structure interaction［J］.Cold Regions Science and Technology, 1996, 24(2): 213-220.
［3］LU W,LUBBAD R, LSET S.In-plane fracture of an ice floe: a theoretical study on the splitting failure mode［J］.Cold Regions Science and Technology,2015,110(4):77-101.
［4］GRTNER A.Experimental and numerical investigations of ice-structure interaction ［D］.Trondheim:NTNU, 2009.
［5］LUW, LUBBAD R,LSET S.Simulating ice-sloping structure interactions with the cohesive element method［J］.Journal of Offshore Mechanics and Arctic Engineering, 2014, 136(3):031501.
［6］WANG F, ZOU Z J, ZHOU L, et al.A simulation study on the interaction between sloping marine structure and level ice based on cohesive element model［J］.Cold Regions Science and Technology, 2018,149:1-15.
［7］苏绍民,丁代膺.平原水库冰温和冰压力测量［J］.内蒙古水利, 2002, 2:84-86.
SU Shaomin, DING Daiying.Measure of ice temperature and ice pressure in plain reservoir［J］.Inner Mongolia Water Resources, 2002, 2:84-86.
［8］李长玉, 李海滨, 赵庆吉.水库主坝平台处护坡工程破坏原因分析［J］.黑龙江水利科技, 2005, 33(5):42-43.
LI Changyu, LI Haibin, ZHAO Qingji.Failure cause analysis of slope protection project at main dam platform of reservoir［J］.Heilongjiang Science and Technology of Water Conservancy, 2005, 33(5):42-43.
［9］STANDER E.Ice stresses in reservoirs:effect of water level fluctuations［J］.Cold Regions Science and Technology, 2006, 20:52-67.
［10］GOLDL W.Crack formation in ice plates by thermal shock［J］.Canadian Journal of Physics,1963,41(10):1712-1728.
［11］GEOGE D A.River and lake ice engineering, water resources publications［M］.Chelseas Michigan:Book Craflers, Inc., 1986.
［12］李志军, 吴紫汪,高树刚,等.渤海连续冰层关键力学参数预报模式［J］.大连理工大学学报, 2003,43(2):238-242.
LI Zhijun, WU Ziwang, GAO Shugang, et al.Forecast model for key mechanical parameters of level ice sheet in Bohai［J］.Journal of Dalian University of Technology, 2003, 43(2): 238-242.
［13］李志军, 卢鹏, DEVINDER S S.基于海冰物理和力学参数的渤海冰工程分区［J］.水科学进展, 2004, 15(5): 598-602.
LI Zhijun, LU Peng, DEVINDER S S.Ice engineering sub-areas in Bohai from ice physical and mechanical parameters［J］.Advance in Water Science, 2004, 15(5): 598-602.
［14］李志军, DEVINDER S S, 卢鹏.渤海海冰工程设计参数分布［J］.工程力学, 2006, 6(6): 167-172.
LI Zhijun, DEVINDER S S, LU Peng.Distribution of ice engineering design criteria of Bohai［J］.Engineering Mechanics, 2006, 6(6): 167-172.
［15］韩红卫.极区航道海冰时空分布及其物理力学性质研究［D］.大连:大连理工大学, 2016.
［16］MOSLET P O.Field testing of uniaxial compression strength of columnar sea ice［J］.Cold Regions Science and Technology, 2007, 48: 1-14.
［17］KRN T, LUBBAD R, LSET S, et al.Ice failure process on fixed and compliant cones［C］∥In HYDRALAB III Joint User Meeting.Hannover:HYDRALAB,2010.
［18］LI Z J, JIA Q, HUANG W F, et al.Characteristics of ice crystals, gas bubbles and densities of fresh water ice in a reservoir［C］∥20th IAHR International Symposium on Ice.Lahti:IAHR, 2010.
［19］TIMCO, G W, WEEKS, W F.A review of the engineering properties of sea ice［J］.Cold Regions Science and Technology,2010,60(2):107-129.
［20］QU Y, YUE Q, BI X, et al.A random ice force model for narrow conical structures［J］.Cold Regions Science and Technology, 2006, 45(3): 148-157.
［21］XIAO J, JORDAAN I.Modeling of fracture and production of discrete ice pieces［R］.［S.l.］:Report for Canada Oil and Gas Land Administration (COGLA) by Ian Jordaan and Associates Inc.,1991.