Smoothed particle hydrodynamics versus finite element method for blast impact

2013 ◽  
Vol 61 (1) ◽  
pp. 111-121 ◽  
Author(s):  
T. Jankowiak ◽  
T. Łodygowski
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Smoothed Particle Hydrodynamics ◽  
Concrete Slab ◽  
The Finite Element Method ◽  
Particle Hydrodynamics ◽  
Mesh Density ◽  
Smoothed Particle ◽  
Element Method

Abstract The paper considers the failure study of concrete structures loaded by the pressure wave due to detonation of an explosive material. In the paper two numerical methods are used and their efficiency and accuracy are compared. There are the Smoothed Particle Hydrodynamics (SPH) and the Finite Element Method (FEM). The numerical examples take into account the dynamic behaviour of concrete slab or a structure composed of two concrete slabs subjected to the blast impact coming from one side. The influence of reinforcement in the slab (1, 2 or 3 layers) is also presented and compared with a pure concrete one. The influence of mesh density for FEM and the influence of important parameters in SPH like a smoothing length or a particle distance on the quality of the results are discussed in the paper

scholarly journals Investigation of Hydrodynamically Dominated Membrane Rupture, Using Smoothed Particle Hydrodynamics–Finite Element Method

Fluids ◽  
2019 ◽  
Vol 4 (3) ◽  
pp. 149 ◽  
Author(s):  
Hossein Asadi ◽  
Mohammad Taeibi-Rahni ◽  
Amir Mahdi Akbarzadeh ◽  
Khodayar Javadi ◽  
Goodarz Ahmadi
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Smoothed Particle Hydrodynamics ◽  
Three Dimensional ◽  
Driving Mechanism ◽  
Two Fluids ◽  
Membrane Rupture ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Element Method

The rupturing process of a membrane, located between two fluids at the center of a three-dimensional channel, is numerically investigated. The smoothed particle hydrodynamics (SPH) and the finite element method (FEM) are used, respectively, for modeling the fluid and solid phases. A range of pressure differences and membrane thicknesses are studied and two different rupturing processes are identified. These processes differ in the time scale of the rupture, the location of the rupture initiation, the level of destruction and the driving mechanism.

Interaction analysis between waves and perforated caisson using the revised smoothed particle hydrodynamics method and finite element method

2019 ◽  
Vol 234 (1) ◽  
pp. 253-271
Author(s):  
Xiaocheng Tang ◽  
Hongzhou Chen ◽  
Feng Jiang ◽  
Ri Zhang ◽  
Dongrui Song
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Smoothed Particle Hydrodynamics ◽  
Dynamic Stress ◽  
Perforated Plate ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Smoothed Particle Hydrodynamics Method ◽  
Perforated Caisson ◽  
Element Method

A two-dimensional smoothed particle hydrodynamics analysis model based on Riemann solution is put forward to discuss its application for the wave-perforated caisson interaction problem. The wave particles are simulated by the smoothed particle hydrodynamics method and the perforated caisson employs the finite element method. The numerical method has been verified by comparing the process of elastic plate with liquid tank with test, and a good agreement is reached. Then, the proposed method is employed to study the distribution of dynamic stress in the perforated plate position of dissipation chamber at the still water level, as well as the distribution of dynamic stress along the perforated plate. Furthermore, the relationship between the dynamic stress and the corresponding coefficient is also discussed, such as the relative width B/L of dissipation chamber of no-roof perforated caisson and the relative height s/L of top cover of perforated caisson. This article concludes by providing reference to the design and construction of perforated caisson breakwaters.

Numerical Investigation on Fracturing of Rock under Blast Using Coupled Finite Element Method and Smoothed Particle Hydrodynamics

2016 ◽  
Vol 846 ◽  
pp. 102-107 ◽  
Author(s):  
Saba Gharehdash ◽  
Lu Ming Shen ◽  
Yi Xiang Gan ◽  
E.A. Flores-Johnson
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Smoothed Particle Hydrodynamics ◽  
Far Field ◽  
Blast Response ◽  
Deformation And Fracture ◽  
Field Response ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Element Method

This paper aims to provide a coupled finite element method (FEM) and smoothed particle hydrodynamics (SPH) approach capable of reproducing the blast response in rock. In the proposed approach, SPH is used to simulate large deformation and fracture of rock at the near detonation zone, while the FEM is adopted to capture the far field response of the rock. The explosive is modelled explicitly using SPH. The numerical simulations are carried out using LS-DYNA. The interaction of the SPH particles and FEM elements was modelled by the node to surface contact, and for the interactions between explosive and rock SPH parts node to node penalty based contact was used. In the present study, the Johnson and Holmquist constitutive model is used for rock. Jones–Wilkins–Lee model is used for TNT explosive. It is found that the preliminary numerical simulation reproduces some of the well-known phenomena observed experimentally by other researchers. The numerical results indicate that the coupled SPH-FEM approach used in this work can be applied to simulate effectively both compressive and tensile damage of rock subjected to blast loading.

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