王帅霖, 刘社文, 季顺迎. 基于GPU并行的锥体导管架平台结构冰激振动DEM-FEM耦合分析[J]. 工程力学, 2019, 36(10): 28-39. DOI: 10.6052/j.issn.1000-4750.2018.10.0560
引用本文: 王帅霖, 刘社文, 季顺迎. 基于GPU并行的锥体导管架平台结构冰激振动DEM-FEM耦合分析[J]. 工程力学, 2019, 36(10): 28-39. DOI: 10.6052/j.issn.1000-4750.2018.10.0560
WANG Shuai-lin, LIU She-wen, JI Shun-ying. COUPLED DISCRETE-FINITE ELEMENT ANALYSIS FOR ICE-INDUCED VIBRATION OF CONICAL JACKET PLATFORM BASED ON GPU-BASED PARALLEL ALGORITHM[J]. Engineering Mechanics, 2019, 36(10): 28-39. DOI: 10.6052/j.issn.1000-4750.2018.10.0560
Citation: WANG Shuai-lin, LIU She-wen, JI Shun-ying. COUPLED DISCRETE-FINITE ELEMENT ANALYSIS FOR ICE-INDUCED VIBRATION OF CONICAL JACKET PLATFORM BASED ON GPU-BASED PARALLEL ALGORITHM[J]. Engineering Mechanics, 2019, 36(10): 28-39. DOI: 10.6052/j.issn.1000-4750.2018.10.0560

基于GPU并行的锥体导管架平台结构冰激振动DEM-FEM耦合分析

COUPLED DISCRETE-FINITE ELEMENT ANALYSIS FOR ICE-INDUCED VIBRATION OF CONICAL JACKET PLATFORM BASED ON GPU-BASED PARALLEL ALGORITHM

  • 摘要: 该文为分析海冰与锥体海洋平台的相互作用,采用离散元(DEM)-有限元(FEM)耦合方法建立冰激海洋平台结构的耦合模型。通过具有粘结-破碎性能的球体离散单元对海冰的漂移及破碎现象进行计算,海洋平台锥体部分采用平板型壳单元构造,其整体构架及锥体内部的加劲肋采用梁单元构造,即建立壳单元与梁单元组合的锥体海洋平台有限元模型。为提高DEM-FEM耦合算法的计算规模和效率,发展了离散单元与平板型壳单元接触算法及GPU并行环境下参数传递算法。基于此耦合模型分别讨论了平台结构的冰载荷、冰激振动以及锥体应力分布,并与相关实测数据进行对比,为寒区锥体海洋平台的结构设计提供有益的参考。

     

    Abstract: A coupled discrete element method (DEM) and finite element method (FEM) is developed to analyze the interaction between sea ice and conical jacket platforms. To model the ice cover and investigate ice loads, a DEM with bond-breaking spherical elements is adopted. Meanwhile, the FEM (with a beam element and flat shell element) is applied to model the ice-induced vibrations (ⅡVs) of a conical jacket platform. The graphics processing unit (GPU)-based parallel algorithm is developed to improve the computational scale and efficiency of the coupled model. An efficient transmission scheme between the bond-breaking spherical elements and the flat shell element based on GPU is proposed. Base on the proposed method, the simulated ice loads, ⅡVs and stress distributions are discussed and verified by comparing them with the full-scale data. This study provides a useful reference for the structure design of conical jacket structures in cold regions.

     

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