A coupled SPH/FEM analysis of portable water filled barriers

Thiyahuddin, Izzat, Gu, YuanTong, & Thambiratnam, David P. (2012) A coupled SPH/FEM analysis of portable water filled barriers. In 4th International Conference on Computational Methods (ICCM2012), 25-28 November 2012, Gold Coast, Qld.

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Abstract

Portable water filled barriers (PWFB) are semi-rigid roadside barriers which have the potential to display good crash attenuation characteristics at low and moderate impact speeds. The traditional mesh based numerical methods alone fail to simulate this type of impact with precision, stability and efficiency. This paper proposes to develop an advanced simulation model based on the combination of Smoothed Particles Hydrodynamics (SPH), a meshless method, and finite element method (FEM) for fluid-structure analysis using the commercially available software package LS-Dyna. The interaction between SPH particles and FEA elements is studied in this paper. Two methods of element setup at the element boundary were investigated. The response of the impacted barrier and fluid inside were analysed and compared. The system response and lagging were observed and reported in this paper. It was demonstrated that coupled SPH/FEM can be used in full scale PWFB modelling application. This will aid the research in determining the best initial setup to couple FEA and SPH in road safety barrier for impact response and safety analysis in the future.

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ID Code: 58087
Item Type: Conference Paper
Refereed: Yes
Additional Information: All accepted papers will be included in a FlashDisk version of the proceedings.
Selected papers presented in the Conference will be invited to be developed into a full journal paper for publication in a special issue of journal. The confirmed special journal issues include .....
Keywords: SPH, Road Safety Barriers, Numerical Modelling, Coupled Analysis, Fluid structure interaction
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 > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2012 please consult the authors
Deposited On: 12 Mar 2013 01:07
Last Modified: 19 Mar 2013 14:26

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