Dynamic ice force estimation on a conical structure by discrete element method

被引:6
|
作者
Jang, HaKun [1 ]
Kim, MooHyun [2 ]
机构
[1] LSU Ctr Computat & Technol, Baton Rouge, LA 70808 USA
[2] Texas A&M Univ, Dept Ocean Engn, College Stn, TX 77843 USA
基金
新加坡国家研究基金会;
关键词
Ice force estimation; Discrete element method; Parallel bonding method; Simulation vs. experiment; LIGGGHTS; DANISH WIND TURBINES; RIDGE KEEL PUNCH; MODEL; SIMULATION; LOAD;
D O I
10.1016/j.ijnaoe.2021.01.003
中图分类号
U6 [水路运输]; P75 [海洋工程];
学科分类号
0814 ; 081505 ; 0824 ; 082401 ;
摘要
This paper aims to numerically estimate the dynamic ice load on a conical structure. The Discrete Element Method (DEM) is employed to model the level ice as the assembly of numerous spherical particles. To mimic the realistic fracture mechanism of ice, the parallel bonding method is introduced. Cases with four different ice drifting velocities are considered in time domain. For validation, the statistics of time-varying ice forces and their frequencies obtained by numerical simulations are extensively compared against the physical model-test results. Ice properties are directly adopted from the targeted experimental test set up. The additional parameters for DEM simulations are systematically determined by a numerical three-point bending test. The findings reveal that the numerical simulation estimates the dynamic ice force in a reasonably acceptable range and its results agree well with experimental data. (C) 2021 Society of Naval Architects of Korea. Production and hosting by Elsevier B.V.
引用
收藏
页码:136 / 146
页数:11
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