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Indexed by:Journal Papers

Date of Publication:2019-10-01

Journal:Gongcheng Lixue/Engineering Mechanics

Included Journals:EI、PKU

Volume:36

Issue:10

Page Number:28-39

ISSN No.:10004750

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. ? 2019, Engineering Mechanics Press. All right reserved.