A coupled SPH-DEM model for fluid-structure interaction problems with free-surface flow and structural failure

Wu, K., Yang, D. and Wright, N. ORCID: 0000-0002-1289-2830, 2016. A coupled SPH-DEM model for fluid-structure interaction problems with free-surface flow and structural failure. Computers & Structures, 177, pp. 141-161. ISSN 0045-7949

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Abstract

An integrated particle model is developed to study fluid-structure interaction (FSI) problems with fracture in the structure induced by the free surface flow of the fluid. In this model, the Smoothed Particle Hydrodynamics (SPH) based on the kernel approximation and particle approximation is used to model the fluid domain in accordance with Navier-Stokes equations and the Discrete Element Method (DEM) with a parallel bond model is used to represent the real solid structure through a hexagonal packing of bonded particles. Validation tests have been carried out for the DEM model of the structure with deformation and fracture failure, the SPH model of the fluid and the coupled SPH-DEM model of FSI without fracture, all showing very good agreement with analytical solutions and/or published experimental and numerical results. The simulation results of FSI with fracture indicate that the SPH-DEM model developed is capable of capturing the entire FSI process from structural deformation to structural failure and eventually to post-failure deformable body movement.

Item Type: Journal article
Publication Title: Computers & Structures
Creators: Wu, K., Yang, D. and Wright, N.
Publisher: Elsevier
Date: December 2016
Volume: 177
ISSN: 0045-7949
Identifiers:
NumberType
10.1016/j.compstruc.2016.08.012DOI
S0045794916303662Publisher Item Identifier
Rights: © 2016 Elsevier Ltd. All rights reserved.
Divisions: Professional Services > The Directorate
Depositing User: Linda Sullivan
Date Added: 29 Oct 2018 09:02
Last Modified: 29 Oct 2018 09:02
URI: http://irep.ntu.ac.uk/id/eprint/34772

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