Fluid-structure interaction analysis by coupled FE-SPH model based on a novel searching algorithm

Hu, Dean, Long, Ting, Xiao, Yihua, Han, Xu, & Gu, YuanTong (2014) Fluid-structure interaction analysis by coupled FE-SPH model based on a novel searching algorithm. Computer Methods in Applied Mechanics and Engineering, 276, pp. 266-286.

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Abstract

Fluid–Structure Interaction (FSI) problem is significant in science and engineering, which leads to challenges for computational mechanics. The coupled model of Finite Element and Smoothed Particle Hydrodynamics (FE-SPH) is a robust technique for simulation of FSI problems. However, two important steps of neighbor searching and contact searching in the coupled FE-SPH model are extremely time-consuming. Point-In-Box (PIB) searching algorithm has been developed by Swegle to improve the efficiency of searching. However, it has a shortcoming that efficiency of searching can be significantly affected by the distribution of points (nodes in FEM and particles in SPH). In this paper, in order to improve the efficiency of searching, a novel Striped-PIB (S-PIB) searching algorithm is proposed to overcome the shortcoming of PIB algorithm that caused by points distribution, and the two time-consuming steps of neighbor searching and contact searching are integrated into one searching step. The accuracy and efficiency of the newly developed searching algorithm is studied on by efficiency test and FSI problems. It has been found that the newly developed model can significantly improve the computational efficiency and it is believed to be a powerful tool for the FSI analysis.

Impact and interest:

3 citations in Scopus
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3 citations in Web of Science®

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ID Code: 71251
Item Type: Journal Article
Refereed: Yes
Keywords: FEM, SPH, contact searching, Fluid-structure interaction, Meshless
DOI: 10.1016/j.cma.2014.04.001
ISSN: 0045-7825
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Numerical Modelling and Mechanical Characterisation (091307)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Funding:
Copyright Owner: Copyright 2014 Elsevier
Copyright Statement: This is the author’s version of a work that was accepted for publication in Computer Methods in Applied Mechanics and Engineering. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Computer Methods in Applied Mechanics and Engineering, [VOL 276, (2014)] DOI:10.1016/j.cma.2014.04.001
Deposited On: 08 May 2014 23:29
Last Modified: 08 Jul 2016 21:07

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