| 考虑初始缺陷的平整冰-锥体结构碰撞数值模拟 |
| |
| 引用本文： | 卢腾超,邹早建,王阳,王峰,石础. 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, 0(6): 250-256 |
| |
| 作者姓名： | 卢腾超 邹早建 王阳 王峰 石础 |
| |
| 作者单位： | 上海交通大学船舶海洋与建筑工程学院;上海交通大学海洋工程国家重点实验室 |
| |
| 基金项目： | 国家自然科学基金(51805086);福建省自然科学基金(2019J01210);福建省卫生教育联合攻关计划(2019-WJ-01)。 |
| |
| 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...
|
| 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 |
Numerical simulation of level ice-conical structure collision considering initial defects in ice |
| |
| LU Tengchao,ZOU Zaojian,WANG Yang,WANG Feng,SHI Chu. Numerical simulation of level ice-conical structure collision considering initial defects in ice[J]. Journal of Vibration and Shock, 2021, 0(6): 250-256 |
| |
| Authors: | LU Tengchao ZOU Zaojian WANG Yang WANG Feng SHI Chu |
| |
| Affiliation: | (School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China) |
| |
| 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. |
| |
| Keywords: | level ice-conical structure collision initial defect fracture failure mode cohesive element model ice load |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
