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

WANG Shuai-lin; LIU She-wen; JI Shun-ying

doi:10.6052/j.issn.1000-4750.2018.10.0560

Volume 36 Issue 10

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Engineering Mechanics > 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

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

1.
State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116023, China;
2.
Naval Architecture and Ocean Engineering College, Dalian Maritime University, Dalian 116023, China

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Received Date: October 18, 2018
Revised Date: May 29, 2019

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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.
- ice load,
- ice-induced vibration,
- conical jacket platform,
- coupled DEM-FEM method,
- GPU-based parallel algorithm

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

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