An Innovative Coupled Common-Node Discrete Element Method-Smoothed Particle Hydrodynamics Model Developed with LS-DYNA and Its Applications

SHEN Zhong-xiang ¹WANG Wen-qing ²XU Cheng-yue ²LUO Jia-xin ²LIU Ren-wei²

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作者信息

1. School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China;College of Harbor,Coastal and Offshore Engineering,Hohai University,Nanjing 210098,China
2. School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China
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Abstract

In this study,a common-node DEM-SPH coupling model based on the shared node method is proposed,and a fluid-structure coupling method using the common-node discrete element method-smoothed particle hydrodynamics(DS-SPH)method is developed using LS-DYNA software.The DEM and SPH are established on the same node to create common-node DEM-SPH particles,allowing for fluid-structure interactions.Numerical simulations of various scenarios,including water entry of a rigid sphere,dam-break propagation over wet beds,impact on an ice plate floating on water and ice accumulation on offshore structures,are conducted.The interaction between DS particles and SPH fluid and the crack generation mechanism and expansion characteristics of the ice plate under the interaction of structure and fluid are also studied.The results are compared with available data to verify the proposed coupling method.Notably,the simulation results demonstrated that controlling the cutoff pressure of internal SPH particles could effectively control particle splashing during ice crushing failure.

Key words

common-node DEM-SPH/fluid-structure interaction/discrete element method/smoothed particle hydrodynamics

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基金项目

National Natural Science Foundation of China(52201323)

出版年

2024

中国海洋工程(英文版)

中国海洋学会

中国海洋工程(英文版)

CSTPCDEI

影响因子：0.338

ISSN：0890-5487

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