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Development of 2-D Hybrid FEM/DEM Method Code Using GPGPU

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Fukuda, D, Liu, H ORCID: 0000-0002-5437-4695, Mohammadnejad, M, Chan, A ORCID: 0000-0003-0042-8448, Cho, SH, Min, GJ, Kodama, J and Yoshiaki, F 2018 , 'Development of 2-D Hybrid FEM/DEM Method Code Using GPGPU', paper presented at the 10th Asian Rock Mechanics Symposium, 29 October - 3 November 2018, Singapore.

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Abstract

This paper introduces the Y-HFDEM code based on two-dimensional combinedfinite-discrete-element method (FEM/DEM) for numerical simulation of fracturing process in brittleand semi-brittle materials including rocks. The code has been successfully employed to simulate rockbreakage under both quasi-static (e.g. uniaxial compression) and dynamic (e.g. rock blasting) loadingconditions. However, the most challenging part in the application of the original Y-HFDEM code wasits simulation time required to solve large-scale problems with massive number of nodes, elementsand contact interactions. To overcome this limitation, this paper demonstrates the application ofGPGPU (General Purpose Graphic Processing Unit) and CUDA (Compute Unified DeviceArchitecture) C/C++ to parallelize the original sequential 2-D Y-HFDEM code along with relatednumerical algorithms using the GPGPU. Obtained results from verification examples demonstrate thecapability of the proposed Y-HFDEM code in modelling larger scale problems in which massivecomputational effort is required.

Item Type: Conference or Workshop Item (Paper)
Authors/Creators:Fukuda, D and Liu, H and Mohammadnejad, M and Chan, A and Cho, SH and Min, GJ and Kodama, J and Yoshiaki, F
Keywords: Y-HFDEM, Combined FEM/DEM, GPGPU, Fracture process of rock
Journal or Publication Title: Proceedings of 10th Asian Rock Mechanics Symposium
Publisher: ISRM
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