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教授

博士生导师

硕士生导师

主要任职:大连理工大学白俄罗斯国立大学联合学院院长、直属党支部书记

其他任职:辽宁省极地海洋专业技术创新中心主任

性别:男

出生日期:1972-12-30

毕业院校:大连理工大学

学位:博士

所在单位:力学与航空航天学院

学科:计算力学. 固体力学. 工程力学. 船舶与海洋结构物设计制造. 岩土与环境力学

办公地点:大连理工大学主校区海宇楼(1号实验楼)607室

联系方式:0411-84708683

电子邮箱:jisy@dlut.edu.cn

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A Coupled Discrete-Finite Element Method for the Ice-Induced Vibrations of a Conical Jacket Platform with a GPU-Based Parallel Algorithm

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论文类型:期刊论文

第一作者:Ji, Shunying

通讯作者:Ji, SY (reprint author), Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian 116023, Peoples R China.

合写作者:Wang, Shuailin

发表时间:2020-05-01

发表刊物:INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS

收录刊物:EI、SCIE

卷号:17

期号:4

ISSN号:0219-8762

关键字:Ice-induced vibrations; conical jacket platform; DEM-FEM

摘要:Flowing ice draws special attention due to the dynamic response of jacket platforms. In this study, a coupled discrete element method (DEM) and finite element method (FEM) are developed to analyze the interaction between sea ice and conical jacket platforms to determine the ice-induced vibrations (IIVs) of the structure. To model the ice cover and to investigate ice loads, a DEM with bond-breaking spherical elements is adopted. Meanwhile, the FEM (with a beam element) is applied to model the IIVs of the jacket platform. An efficient transmission scheme between the bond-breaking spherical elements and the beam element is proposed. The graphics processing unit-based parallel algorithm is developed to improve the computational efficiency. The simulated ice loads are verified by comparing them with the full-scale data and different ice load functions. The simulated IIV accelerations of the JZ20-2 MUQ conical platform in the Bohai Sea (China) are consistent with the full-scale data under various ice conditions (e.g., velocity and thickness). The numerical results show that the IIV acceleration increases linearly with the ice velocity and the square of the ice thickness.